diff --git a/knowledgehub/__init__.py b/knowledgehub/__init__.py
index fbc4235..0e4d028 100644
--- a/knowledgehub/__init__.py
+++ b/knowledgehub/__init__.py
@@ -22,4 +22,4 @@ try:
 except ImportError:
     pass
 
-__version__ = "0.0.3"
+__version__ = "0.0.4"
diff --git a/knowledgehub/chatbot/__init__.py b/knowledgehub/chatbot/__init__.py
new file mode 100644
index 0000000..3668d53
--- /dev/null
+++ b/knowledgehub/chatbot/__init__.py
@@ -0,0 +1,4 @@
+from .base import BaseChatBot, ChatConversation
+from .simple_respondent import SimpleRespondentChatbot
+
+__all__ = ["BaseChatBot", "SimpleRespondentChatbot", "ChatConversation"]
diff --git a/knowledgehub/chatbot/base.py b/knowledgehub/chatbot/base.py
new file mode 100644
index 0000000..bbfbd48
--- /dev/null
+++ b/knowledgehub/chatbot/base.py
@@ -0,0 +1,117 @@
+from abc import abstractmethod
+from typing import List, Optional
+
+from langchain.schema.messages import AIMessage, SystemMessage
+from theflow import Param, SessionCompose
+
+from ..base import BaseComponent
+from ..llms.base import LLMInterface
+from ..llms.chats.base import BaseMessage, HumanMessage
+
+
+class BaseChatBot(BaseComponent):
+    @abstractmethod
+    def run(self, messages: List[BaseMessage]) -> LLMInterface:
+        ...
+
+
+def session_chat_storage(obj):
+    """Store using the bot location rather than the session location"""
+    return obj._store_result
+
+
+class ChatConversation(SessionCompose):
+    """Base implementation of a chat bot component
+
+    A chatbot component should:
+        - handle internal state, including history messages
+        - return output for a given input
+    """
+
+    class Config:
+        store_result = session_chat_storage
+
+    system_message: Param[str] = Param(default="")
+    bot: BaseChatBot
+
+    def __init__(self, *args, **kwargs):
+        self._history: List[BaseMessage] = []
+        self._store_result = (
+            f"{self.__module__}.{self.__class__.__name__},uninitiated_bot"
+        )
+        super().__init__(*args, **kwargs)
+
+    def run(self, message: HumanMessage) -> Optional[BaseMessage]:
+        """Chat, given a message, return a response
+
+        Args:
+            message: The message to respond to
+
+        Returns:
+            The response to the message. If None, no response is sent.
+        """
+        user_message = (
+            HumanMessage(content=message) if isinstance(message, str) else message
+        )
+        self.history.append(user_message)
+
+        output = self.bot(self.history).text
+        output_message = None
+        if output is not None:
+            output_message = AIMessage(content=output)
+            self.history.append(output_message)
+
+        return output_message
+
+    def start_session(self):
+        self._store_result = self.bot.config.store_result
+        super().start_session()
+        if not self.history and self.system_message:
+            system_message = SystemMessage(content=self.system_message)
+            self.history.append(system_message)
+
+    def end_session(self):
+        super().end_session()
+        self._history = []
+
+    def check_end(
+        self,
+        history: Optional[List[BaseMessage]] = None,
+        user_message: Optional[HumanMessage] = None,
+        bot_message: Optional[AIMessage] = None,
+    ) -> bool:
+        """Check if a conversation should end"""
+        if user_message is not None and user_message.content == "":
+            return True
+
+        return False
+
+    def terminal_session(self):
+        """Create a terminal session"""
+        self.start_session()
+        print(">> Start chat:")
+
+        while True:
+            human = HumanMessage(content=input("Human: "))
+            if self.check_end(history=self.history, user_message=human):
+                break
+
+            output = self(human)
+            if output is None:
+                print("AI: <No response>")
+            else:
+                print("AI:", output.content)
+
+            if self.check_end(history=self.history, bot_message=output):
+                break
+
+        self.end_session()
+
+    @property
+    def history(self):
+        return self._history
+
+    @history.setter
+    def history(self, value):
+        self._history = value
+        self._variablex()
diff --git a/knowledgehub/chatbot/simple_respondent.py b/knowledgehub/chatbot/simple_respondent.py
new file mode 100644
index 0000000..cfbe875
--- /dev/null
+++ b/knowledgehub/chatbot/simple_respondent.py
@@ -0,0 +1,13 @@
+from theflow import Node
+
+from ..llms import ChatLLM
+from .base import BaseChatBot
+
+
+class SimpleRespondentChatbot(BaseChatBot):
+    """Simple text respondent chatbot that essentially wraps around a chat LLM"""
+
+    llm: Node[ChatLLM]
+
+    def _get_message(self) -> str:
+        return self.llm(self.history).text[0]
diff --git a/knowledgehub/cli.py b/knowledgehub/cli.py
index 67b534d..8272307 100644
--- a/knowledgehub/cli.py
+++ b/knowledgehub/cli.py
@@ -29,8 +29,9 @@ main.add_command(promptui)
 
 @promptui.command()
 @click.argument("export_path", nargs=1)
-@click.option("--output", default="promptui.yml", required=False)
+@click.option("--output", default="promptui.yml", show_default=True, required=False)
 def export(export_path, output):
+    """Export a pipeline to a config file"""
     import sys
 
     from theflow.utils.modules import import_dotted_string
@@ -45,11 +46,119 @@ def export(export_path, output):
 
 @promptui.command()
 @click.argument("run_path", required=False, default="promptui.yml")
-def run(run_path):
+@click.option(
+    "--share",
+    is_flag=True,
+    show_default=True,
+    default=False,
+    help="Share the app through Gradio. Requires --username to enable authentication.",
+)
+@click.option(
+    "--username",
+    required=False,
+    help="Username for the user. If not provided, the promptui will not have "
+    "authentication.",
+)
+@click.option(
+    "--password",
+    required=False,
+    help="Password for the user. If not provided, will be prompted.",
+)
+@click.option(
+    "--appname",
+    required=False,
+    default="The share app subdomain. Requires --share and --username",
+)
+@click.option(
+    "--port",
+    required=False,
+    help="Port to run the app. If not provided, will $GRADIO_SERVER_PORT (7860)",
+)
+def run(run_path, share, username, password, appname, port):
+    """Run the UI from a config file
+
+    Examples:
+
+        \b
+        # Run with default config file
+        $ kh promptui run
+
+        \b
+        # Run with username and password supplied
+        $ kh promptui run --username admin --password password
+
+        \b
+        # Run with username and prompted password
+        $ kh promptui run --username admin
+
+        # Run and share to promptui
+        # kh promptui run --username admin --password password --share --appname hey \
+                --port 7861
+    """
+    import sys
+
     from kotaemon.contribs.promptui.ui import build_from_dict
 
-    build_from_dict(run_path)
+    sys.path.append(os.getcwd())
+
     check_config_format(run_path)
+    demo = build_from_dict(run_path)
+
+    params: dict = {}
+    if username is not None:
+        if password is not None:
+            auth = (username, password)
+        else:
+            auth = (username, click.prompt("Password", hide_input=True))
+        params["auth"] = auth
+
+    port = int(port) if port else int(os.getenv("GRADIO_SERVER_PORT", "7860"))
+    params["server_port"] = port
+
+    if share:
+        if username is None:
+            raise ValueError(
+                "Username must be provided to enable authentication for sharing"
+            )
+        if appname:
+            command = [
+                "frpc",
+                "http",
+                "-l",
+                str(port),
+                "-i",
+                "127.0.0.1",
+                "--uc",
+                "--sd",
+                str(appname),
+                "-n",
+                str(appname + username),
+                "--server_addr",
+                "35.92.162.75:7000",
+                "--token",
+                "Wz807/DyC;#t;#/",
+                "--disable_log_color",
+            ]
+            import atexit
+            import subprocess
+
+            proc = subprocess.Popen(
+                command, stdout=subprocess.PIPE, stderr=subprocess.PIPE
+            )
+
+            def kill_proc():
+                if proc is not None:
+                    print(f"Killing tunnel: https://{appname}.promptui.dm.cinnamon.is")
+                    proc.terminate()
+
+            atexit.register(kill_proc)
+
+            print(f"App is shared at https://{appname}.promptui.dm.cinnamon.is")
+        else:
+            params["share"] = True
+            print("App is shared at Gradio")
+
+    demo.launch(**params)
 
 
 @main.command()
diff --git a/knowledgehub/contribs/promptui/base.py b/knowledgehub/contribs/promptui/base.py
index ac7c0f0..8d3eeb2 100644
--- a/knowledgehub/contribs/promptui/base.py
+++ b/knowledgehub/contribs/promptui/base.py
@@ -18,3 +18,26 @@ DEFAULT_COMPONENT_BY_TYPES = {
     "float": "number",
     "list": "dropdown",
 }
+
+
+def get_component(component_def: dict) -> gr.components.Component:
+    """Get the component based on component definition"""
+    component_cls = None
+
+    if "component" in component_def:
+        component = component_def["component"]
+        if component not in SUPPORTED_COMPONENTS:
+            raise ValueError(
+                f"Unsupported UI component: {component}. "
+                f"Must be one of {SUPPORTED_COMPONENTS}"
+            )
+
+        component_cls = COMPONENTS_CLASS[component]
+    else:
+        raise ValueError(
+            f"Cannot decide the component from {component_def}. "
+            "Please specify `component` with 1 of the following "
+            f"values: {SUPPORTED_COMPONENTS}"
+        )
+
+    return component_cls(**component_def.get("params", {}))
diff --git a/knowledgehub/contribs/promptui/config.py b/knowledgehub/contribs/promptui/config.py
index a581c75..684f96f 100644
--- a/knowledgehub/contribs/promptui/config.py
+++ b/knowledgehub/contribs/promptui/config.py
@@ -6,6 +6,7 @@ from typing import Any, Dict, Optional, Type, Union
 import yaml
 
 from ...base import BaseComponent
+from ...chatbot import BaseChatBot
 from .base import DEFAULT_COMPONENT_BY_TYPES
 
 
@@ -47,8 +48,10 @@ def handle_param(param: dict) -> dict:
     if default is not None:
         params["value"] = default
 
-    type_: str = type(default).__name__ if default is not None else ""
-    ui_component = DEFAULT_COMPONENT_BY_TYPES.get(type_, "text")
+    ui_component = param.get("component_ui", "")
+    if not ui_component:
+        type_: str = type(default).__name__ if default is not None else ""
+        ui_component = DEFAULT_COMPONENT_BY_TYPES.get(type_, "text")
 
     return {
         "component": ui_component,
@@ -62,10 +65,14 @@ def handle_node(node: dict) -> dict:
     for name, param_def in node.get("params", {}).items():
         if isinstance(param_def["default_callback"], str):
             continue
+        if param_def.get("ignore_ui", False):
+            continue
         config[name] = handle_param(param_def)
     for name, node_def in node.get("nodes", {}).items():
         if isinstance(node_def["default_callback"], str):
             continue
+        if node_def.get("ignore_ui", False):
+            continue
         for key, value in handle_node(node_def["default"]).items():
             config[f"{name}.{key}"] = value
         for key, value in node_def["default_kwargs"].items():
@@ -113,13 +120,52 @@ def export_pipeline_to_config(
         pipeline = pipeline()
 
     pipeline_def = pipeline.describe()
-    config = {
-        f"{pipeline.__module__}.{pipeline.__class__.__name__}": {
+    ui_type = "chat" if isinstance(pipeline, BaseChatBot) else "simple"
+    if ui_type == "chat":
+        params = {f".bot.{k}": v for k, v in handle_node(pipeline_def).items()}
+        params["system_message"] = {"component": "text", "params": {"value": ""}}
+        config_obj: dict = {
+            "ui-type": ui_type,
+            "params": params,
+            "inputs": {},
+            "outputs": [],
+            "logs": {
+                "full_pipeline": {
+                    "input": {
+                        "step": ".",
+                        "getter": "_get_input",
+                    },
+                    "output": {
+                        "step": ".",
+                        "getter": "_get_output",
+                    },
+                    "preference": {
+                        "step": "preference",
+                    },
+                }
+            },
+        }
+    else:
+        config_obj = {
+            "ui-type": ui_type,
             "params": handle_node(pipeline_def),
             "inputs": handle_input(pipeline),
-            "outputs": [{"step": ".", "component": "text"}],
+            "outputs": [{"step": ".", "getter": "_get_output", "component": "text"}],
+            "logs": {
+                "full_pipeline": {
+                    "input": {
+                        "step": ".",
+                        "getter": "_get_input",
+                    },
+                    "output": {
+                        "step": ".",
+                        "getter": "_get_output",
+                    },
+                },
+            },
         }
-    }
+
+    config = {f"{pipeline.__module__}.{pipeline.__class__.__name__}": config_obj}
     if path is not None:
         old_config = config
         if Path(path).is_file():
@@ -127,6 +173,6 @@ def export_pipeline_to_config(
                 old_config = yaml.safe_load(f)
                 old_config.update(config)
         with open(path, "w") as f:
-            yaml.safe_dump(old_config, f)
+            yaml.safe_dump(old_config, f, sort_keys=False)
 
     return config
diff --git a/knowledgehub/contribs/promptui/export.py b/knowledgehub/contribs/promptui/export.py
index 23eec2a..fe4b2b2 100644
--- a/knowledgehub/contribs/promptui/export.py
+++ b/knowledgehub/contribs/promptui/export.py
@@ -11,6 +11,8 @@ from theflow.utils.modules import import_dotted_string
 
 from kotaemon.base import BaseComponent
 
+from .logs import ResultLog
+
 
 def from_log_to_dict(pipeline_cls: Type[BaseComponent], log_config: dict) -> dict:
     """Export the log to panda dataframes
@@ -26,10 +28,13 @@ def from_log_to_dict(pipeline_cls: Type[BaseComponent], log_config: dict) -> dic
     pipeline_log_path = storage.url(pipeline_cls().config.store_result)
     dirs = list(sorted([f.path for f in os.scandir(pipeline_log_path) if f.is_dir()]))
 
+    # get resultlog callback
+    resultlog = getattr(pipeline_cls, "_promptui_resultlog", ResultLog)
+    allowed_resultlog_callbacks = {i for i in dir(resultlog) if not i.startswith("__")}
+
     ids = []
     params: Dict[str, List[Any]] = {}
-    inputs: Dict[str, List[Any]] = {}
-    outputs: Dict[str, List[Any]] = {}
+    logged_infos: Dict[str, List[Any]] = {}
 
     for idx, each_dir in enumerate(dirs):
         ids.append(str(Path(each_dir).name))
@@ -44,34 +49,29 @@ def from_log_to_dict(pipeline_cls: Type[BaseComponent], log_config: dict) -> dic
                     params[key] = [None] * len(dirs)
                 params[key][idx] = value
 
+        # get the progress
         progress_file = os.path.join(each_dir, "progress.pkl")
         if os.path.exists(progress_file):
             with open(progress_file, "rb") as f:
                 progress = pickle.load(f)
 
-            # get the inputs
-            for each_input in log_config["inputs"]:
-                name = each_input["name"]
-                step = each_input["step"]
-                if name not in inputs:
-                    inputs[name] = [None] * len(dirs)
-                variable = each_input.get("variable", "")
-                if variable:
-                    inputs[name][idx] = progress[step]["input"]["kwargs"][variable]
+            for name, col_info in log_config.items():
+                step = col_info["step"]
+                getter = col_info.get("getter", None)
+                if name not in logged_infos:
+                    logged_infos[name] = [None] * len(dirs)
+
+                info = progress[step]
+                if getter:
+                    if getter in allowed_resultlog_callbacks:
+                        info = getattr(resultlog, getter)(info)
                 else:
-                    inputs[name][idx] = progress[step]["input"]
+                    implicit_name = f"get_{name}"
+                    if implicit_name in allowed_resultlog_callbacks:
+                        info = getattr(resultlog, implicit_name)(info)
+                logged_infos[name][idx] = info
 
-            # get the outputs
-            for each_output in log_config["outputs"]:
-                name = each_output["name"]
-                step = each_output["step"]
-                if name not in outputs:
-                    outputs[name] = [None] * len(dirs)
-                outputs[name][idx] = progress[step]["output"]
-                if each_output.get("item", ""):
-                    outputs[name][idx] = outputs[name][each_output["item"]]
-
-    return {"ids": ids, **params, **inputs, **outputs}
+    return {"ids": ids, **params, **logged_infos}
 
 
 def export(config: dict, pipeline_def, output_path):
diff --git a/knowledgehub/contribs/promptui/logs.py b/knowledgehub/contribs/promptui/logs.py
new file mode 100644
index 0000000..f9b24d2
--- /dev/null
+++ b/knowledgehub/contribs/promptui/logs.py
@@ -0,0 +1,16 @@
+class ResultLog:
+    """Callback getter to get the desired log result
+
+    The callback resolution will be as follow:
+        1. Explicit string name
+        2. Implicitly by: `get_<name>`
+        3. Pass through
+    """
+
+    @staticmethod
+    def _get_input(obj):
+        return obj["input"]
+
+    @staticmethod
+    def _get_output(obj):
+        return obj["output"]
diff --git a/knowledgehub/contribs/promptui/themes.py b/knowledgehub/contribs/promptui/themes.py
new file mode 100644
index 0000000..f7d8618
--- /dev/null
+++ b/knowledgehub/contribs/promptui/themes.py
@@ -0,0 +1,95 @@
+from __future__ import annotations
+
+from typing import Iterable
+
+from gradio.themes.base import Base
+from gradio.themes.utils import colors, fonts, sizes
+
+
+class John(Base):
+    def __init__(
+        self,
+        *,
+        primary_hue: colors.Color | str = colors.neutral,
+        secondary_hue: colors.Color | str = colors.neutral,
+        neutral_hue: colors.Color | str = colors.neutral,
+        spacing_size: sizes.Size | str = sizes.spacing_lg,
+        radius_size: sizes.Size | str = sizes.radius_none,
+        text_size: sizes.Size | str = sizes.text_md,
+        font: fonts.Font
+        | str
+        | Iterable[fonts.Font | str] = (
+            fonts.GoogleFont("Quicksand"),
+            "ui-sans-serif",
+            "system-ui",
+            "sans-serif",
+        ),
+        font_mono: fonts.Font
+        | str
+        | Iterable[fonts.Font | str] = (
+            fonts.GoogleFont("IBM Plex Mono"),
+            "ui-monospace",
+            "Consolas",
+            "monospace",
+        ),
+    ):
+        super().__init__(
+            primary_hue=primary_hue,
+            secondary_hue=secondary_hue,
+            neutral_hue=neutral_hue,
+            spacing_size=spacing_size,
+            radius_size=radius_size,
+            text_size=text_size,
+            font=font,
+            font_mono=font_mono,
+        )
+        self.name = "monochrome"
+        super().set(
+            # Colors
+            slider_color="*neutral_900",
+            slider_color_dark="*neutral_500",
+            body_text_color="*neutral_900",
+            block_label_text_color="*body_text_color",
+            block_title_text_color="*body_text_color",
+            body_text_color_subdued="*neutral_700",
+            background_fill_primary_dark="*neutral_900",
+            background_fill_secondary_dark="*neutral_800",
+            block_background_fill_dark="*neutral_800",
+            input_background_fill_dark="*neutral_700",
+            # Button Colors
+            button_primary_background_fill="*neutral_900",
+            button_primary_background_fill_hover="*neutral_700",
+            button_primary_text_color="white",
+            button_primary_background_fill_dark="*neutral_600",
+            button_primary_background_fill_hover_dark="*neutral_600",
+            button_primary_text_color_dark="white",
+            button_secondary_background_fill=(
+                "linear-gradient(to bottom right, *neutral_100, *neutral_200)"
+            ),
+            button_secondary_background_fill_hover=(
+                "linear-gradient(to bottom right, *neutral_100, *neutral_100)"
+            ),
+            button_secondary_background_fill_dark=(
+                "linear-gradient(to bottom right, *neutral_600, *neutral_700)"
+            ),
+            button_secondary_background_fill_hover_dark=(
+                "linear-gradient(to bottom right, *neutral_600, *neutral_600)"
+            ),
+            button_cancel_background_fill="*button_primary_background_fill",
+            button_cancel_background_fill_hover="*button_primary_background_fill_hover",
+            button_cancel_text_color="*button_primary_text_color",
+            # Padding
+            checkbox_label_padding="*spacing_md",
+            button_large_padding="*spacing_lg",
+            button_small_padding="*spacing_sm",
+            # Borders
+            block_border_width="0px",
+            block_border_width_dark="1px",
+            shadow_drop_lg="0 1px 4px 0 rgb(0 0 0 / 0.1)",
+            block_shadow="*shadow_drop_lg",
+            block_shadow_dark="none",
+            # Block Labels
+            block_title_text_weight="600",
+            block_label_text_weight="600",
+            block_label_text_size="*text_md",
+        )
diff --git a/knowledgehub/contribs/promptui/ui/__init__.py b/knowledgehub/contribs/promptui/ui/__init__.py
new file mode 100644
index 0000000..d312e55
--- /dev/null
+++ b/knowledgehub/contribs/promptui/ui/__init__.py
@@ -0,0 +1,45 @@
+from typing import Union
+
+import gradio as gr
+import yaml
+from theflow.utils.modules import import_dotted_string
+
+from ..themes import John
+from .chat import build_chat_ui
+from .pipeline import build_pipeline_ui
+
+
+def build_from_dict(config: Union[str, dict]):
+    """Build a full UI from YAML config file"""
+
+    if isinstance(config, str):
+        with open(config) as f:
+            config_dict: dict = yaml.safe_load(f)
+    elif isinstance(config, dict):
+        config_dict = config
+    else:
+        raise ValueError(
+            f"config must be either a yaml path or a dict, got {type(config)}"
+        )
+
+    demos = []
+    for key, value in config_dict.items():
+        pipeline_def = import_dotted_string(key, safe=False)
+        if value["ui-type"] == "chat":
+            demos.append(build_chat_ui(value, pipeline_def))
+        else:
+            demos.append(build_pipeline_ui(value, pipeline_def))
+    if len(demos) == 1:
+        demo = demos[0]
+    else:
+        demo = gr.TabbedInterface(
+            demos,
+            tab_names=list(config_dict.keys()),
+            title="PromptUI from kotaemon",
+            analytics_enabled=False,
+            theme=John(),
+        )
+
+    demo.queue()
+
+    return demo
diff --git a/knowledgehub/contribs/promptui/ui/chat.py b/knowledgehub/contribs/promptui/ui/chat.py
new file mode 100644
index 0000000..b71b7b3
--- /dev/null
+++ b/knowledgehub/contribs/promptui/ui/chat.py
@@ -0,0 +1,282 @@
+import pickle
+from datetime import datetime
+from pathlib import Path
+
+import gradio as gr
+from theflow.storage import storage
+
+from kotaemon.chatbot import ChatConversation
+from kotaemon.contribs.promptui.base import get_component
+from kotaemon.contribs.promptui.export import export
+
+USAGE_INSTRUCTION = """## How to use:
+
+1. Set the desired parameters.
+2. Click "New chat" to start a chat session with the supplied parameters. This
+    set of parameters will persist until the end of the chat session. During an
+    ongoing chat session, changing the parameters will not take any effect.
+3. Chat and interact with the chat bot on the right panel. You can add any
+    additional input (if any), and they will be supplied to the chatbot.
+4. During chat, the log of the chat will show up in the "Output" tabs. This is
+    empty by default, so if you want to show the log here, tell the AI developers
+    to configure the UI settings.
+5. When finishing chat, select your preference in the radio box. Click "End chat".
+    This will save the chat log and the preference to disk.
+6. To compare the result of different run, click "Export" to get an Excel
+    spreadsheet summary of different run.
+
+## Support:
+
+In case of errors, you can:
+
+- PromptUI instruction:
+    https://github.com/Cinnamon/kotaemon/wiki/Utilities#prompt-engineering-ui
+- Create bug fix and make PR at: https://github.com/Cinnamon/kotaemon
+- Ping any of @john @tadashi @ian @jacky in Slack channel #llm-productization
+
+## Contribute:
+
+- Follow installation at: https://github.com/Cinnamon/kotaemon/
+"""
+
+
+def construct_chat_ui(
+    config, func_new_chat, func_chat, func_end_chat, func_export_to_excel
+) -> gr.Blocks:
+    """Construct the prompt engineering UI for chat
+
+    Args:
+        config: the UI config
+        func_new_chat: the function for starting a new chat session
+        func_chat: the function for chatting interaction
+        func_end_chat: the function for ending and saving the chat
+        func_export_to_excel: the function to export the logs to excel
+
+    Returns:
+        the UI object
+    """
+    inputs, outputs, params = [], [], []
+    for name, component_def in config.get("inputs", {}).items():
+        if "params" not in component_def:
+            component_def["params"] = {}
+        component_def["params"]["interactive"] = True
+        component = get_component(component_def)
+        if hasattr(component, "label") and not component.label:  # type: ignore
+            component.label = name  # type: ignore
+
+        inputs.append(component)
+
+    for name, component_def in config.get("params", {}).items():
+        if "params" not in component_def:
+            component_def["params"] = {}
+        component_def["params"]["interactive"] = True
+        component = get_component(component_def)
+        if hasattr(component, "label") and not component.label:  # type: ignore
+            component.label = name  # type: ignore
+
+        params.append(component)
+
+    for idx, component_def in enumerate(config.get("outputs", [])):
+        if "params" not in component_def:
+            component_def["params"] = {}
+        component_def["params"]["interactive"] = False
+        component = get_component(component_def)
+        if hasattr(component, "label") and not component.label:  # type: ignore
+            component.label = f"Output {idx}"  # type: ignore
+
+        outputs.append(component)
+
+    sess = gr.State(value=None)
+    chatbot = gr.Chatbot(label="Chatbot")
+    chat = gr.ChatInterface(func_chat, chatbot=chatbot, additional_inputs=[sess])
+    param_state = gr.Textbox(interactive=False)
+
+    with gr.Blocks(analytics_enabled=False, title="Welcome to PromptUI") as demo:
+        sess.render()
+        with gr.Accordion(label="HOW TO", open=False):
+            gr.Markdown(USAGE_INSTRUCTION)
+        with gr.Row():
+            run_btn = gr.Button("New chat")
+            run_btn.click(
+                func_new_chat,
+                inputs=params,
+                outputs=[
+                    chat.chatbot,
+                    chat.chatbot_state,
+                    chat.saved_input,
+                    param_state,
+                    sess,
+                ],
+            )
+            with gr.Accordion(label="End chat", open=False):
+                likes = gr.Radio(["like", "dislike", "neutral"], value="neutral")
+                save_log = gr.Checkbox(
+                    value=True,
+                    label="Save log",
+                    info="If saved, log can be exported later",
+                    show_label=True,
+                )
+                end_btn = gr.Button("End chat")
+                end_btn.click(
+                    func_end_chat,
+                    inputs=[likes, save_log, sess],
+                    outputs=[param_state, sess],
+                )
+            with gr.Accordion(label="Export", open=False):
+                exported_file = gr.File(
+                    label="Output file", show_label=True, height=100
+                )
+                export_btn = gr.Button("Export")
+                export_btn.click(
+                    func_export_to_excel, inputs=None, outputs=exported_file
+                )
+
+        with gr.Row():
+            with gr.Column():
+                with gr.Tab("Params"):
+                    for component in params:
+                        component.render()
+                    with gr.Accordion(label="Session state", open=False):
+                        param_state.render()
+
+                with gr.Tab("Outputs"):
+                    for component in outputs:
+                        component.render()
+            with gr.Column():
+                chat.render()
+
+    return demo.queue()
+
+
+def build_chat_ui(config, pipeline_def):
+    """Build the chat UI
+
+    Args:
+        config: the UI config
+        pipeline_def: the pipeline definition
+
+    Returns:
+        the UI object
+    """
+    output_dir: Path = Path(storage.url(pipeline_def().config.store_result))
+    exported_dir = output_dir.parent / "exported"
+    exported_dir.mkdir(parents=True, exist_ok=True)
+
+    def new_chat(*args):
+        """Start a new chat function
+
+        Args:
+            *args: the pipeline init params
+
+        Returns:
+            new empty states
+        """
+        gr.Info("Starting new session...")
+        param_dicts = {
+            name: value for name, value in zip(config["params"].keys(), args)
+        }
+        for key in param_dicts.keys():
+            if config["params"][key].get("component").lower() == "file":
+                param_dicts[key] = param_dicts[key].name
+
+        # TODO: currently hard-code as ChatConversation
+        pipeline = pipeline_def()
+        session = ChatConversation(bot=pipeline)
+        session.set(param_dicts)
+        session.start_session()
+
+        param_state_str = "\n".join(
+            f"- {name}: {value}" for name, value in param_dicts.items()
+        )
+
+        gr.Info("New chat session started.")
+        return [], [], None, param_state_str, session
+
+    def chat(message, history, session, *args):
+        """The chat interface
+
+        # TODO: wrap the input and output of this chat function so that it
+        work with more types of chat conversation than simple text
+
+        Args:
+            message: the message from the user
+            history: the gradio history of the chat
+            session: the chat object session
+            *args: the additional inputs
+
+        Returns:
+            the response from the chatbot
+        """
+        if session is None:
+            raise gr.Error(
+                "No active chat session. Please set the params and click New chat"
+            )
+
+        return session(message).content
+
+    def end_chat(preference: str, save_log: bool, session):
+        """End the chat session
+
+        Args:
+            preference: the preference of the user
+            save_log: whether to save the result
+            session: the chat object session
+
+        Returns:
+            the new empty state
+        """
+        gr.Info("Ending session...")
+        session.end_session()
+        output_dir: Path = (
+            Path(storage.url(session.config.store_result)) / session.last_run.id()
+        )
+
+        if not save_log:
+            if output_dir.exists():
+                import shutil
+
+                shutil.rmtree(output_dir)
+
+            session = None
+            param_state = ""
+            gr.Info("End session without saving log.")
+            return param_state, session
+
+        # add preference result to progress
+        with (output_dir / "progress.pkl").open("rb") as fi:
+            progress = pickle.load(fi)
+            progress["preference"] = preference
+        with (output_dir / "progress.pkl").open("wb") as fo:
+            pickle.dump(progress, fo)
+
+        # get the original params
+        param_dicts = {name: session.getx(name) for name in config["params"].keys()}
+        with (output_dir / "params.pkl").open("wb") as fo:
+            pickle.dump(param_dicts, fo)
+
+        session = None
+        param_state = ""
+        gr.Info("End session and save log.")
+        return param_state, session
+
+    def export_func():
+        name = (
+            f"{pipeline_def.__module__}.{pipeline_def.__name__}_{datetime.now()}.xlsx"
+        )
+        path = str(exported_dir / name)
+        gr.Info(f"Begin exporting {name}...")
+        try:
+            export(config=config, pipeline_def=pipeline_def, output_path=path)
+        except Exception as e:
+            raise gr.Error(f"Failed to export. Please contact project's AIR: {e}")
+        gr.Info(f"Exported {name}. Please go to the `Exported file` tab to download")
+        return path
+
+    demo = construct_chat_ui(
+        config=config,
+        func_new_chat=new_chat,
+        func_chat=chat,
+        func_end_chat=end_chat,
+        func_export_to_excel=export_func,
+    )
+    return demo
diff --git a/knowledgehub/contribs/promptui/ui.py b/knowledgehub/contribs/promptui/ui/pipeline.py
similarity index 54%
rename from knowledgehub/contribs/promptui/ui.py
rename to knowledgehub/contribs/promptui/ui/pipeline.py
index cb0fcba..08d90bf 100644
--- a/knowledgehub/contribs/promptui/ui.py
+++ b/knowledgehub/contribs/promptui/ui/pipeline.py
@@ -1,48 +1,46 @@
 import pickle
+import time
 from datetime import datetime
 from pathlib import Path
-from typing import Union
+from typing import Any, Dict
 
 import gradio as gr
-import yaml
+import pandas as pd
 from theflow.storage import storage
-from theflow.utils.modules import import_dotted_string
 
-from kotaemon.contribs.promptui.base import COMPONENTS_CLASS, SUPPORTED_COMPONENTS
+from kotaemon.contribs.promptui.base import get_component
 from kotaemon.contribs.promptui.export import export
 
-USAGE_INSTRUCTION = """In case of errors, you can:
+from ..logs import ResultLog
+
+USAGE_INSTRUCTION = """## How to use:
+
+1. Set the desired parameters.
+2. Set the desired inputs.
+3. Click "Run" to execute the pipeline with the supplied parameters and inputs
+4. The pipeline output will show up in the output panel.
+5. Repeat from step 1.
+6. To compare the result of different run, click "Export" to get an Excel
+    spreadsheet summary of different run.
+
+## Support:
+
+In case of errors, you can:
 
 - PromptUI instruction:
     https://github.com/Cinnamon/kotaemon/wiki/Utilities#prompt-engineering-ui
 - Create bug fix and make PR at: https://github.com/Cinnamon/kotaemon
-- Ping any of @john @tadashi @ian @jacky in Slack channel #llm-productization"""
+- Ping any of @john @tadashi @ian @jacky in Slack channel #llm-productization
+
+## Contribute:
+
+- Follow installation at: https://github.com/Cinnamon/kotaemon/
+"""
 
 
-def get_component(component_def: dict) -> gr.components.Component:
-    """Get the component based on component definition"""
-    component_cls = None
-
-    if "component" in component_def:
-        component = component_def["component"]
-        if component not in SUPPORTED_COMPONENTS:
-            raise ValueError(
-                f"Unsupported UI component: {component}. "
-                f"Must be one of {SUPPORTED_COMPONENTS}"
-            )
-
-        component_cls = COMPONENTS_CLASS[component]
-    else:
-        raise ValueError(
-            f"Cannot decide the component from {component_def}. "
-            "Please specify `component` with 1 of the following "
-            f"values: {SUPPORTED_COMPONENTS}"
-        )
-
-    return component_cls(**component_def.get("params", {}))
-
-
-def construct_ui(config, func_run, func_export) -> gr.Blocks:
+def construct_pipeline_ui(
+    config, func_run, func_save, func_load_params, func_activate_params, func_export
+) -> gr.Blocks:
     """Create UI from config file. Execute the UI from config file
 
     - Can do now: Log from stdout to UI
@@ -76,16 +74,29 @@ def construct_ui(config, func_run, func_export) -> gr.Blocks:
         component_def["params"]["interactive"] = False
         component = get_component(component_def)
         if hasattr(component, "label") and not component.label:  # type: ignore
-            component.label = f"Output {idx}"
+            component.label = f"Output {idx}"  # type: ignore
 
         outputs.append(component)
 
     exported_file = gr.File(label="Output file", show_label=True)
+    history_dataframe = gr.DataFrame(wrap=True)
 
     temp = gr.Tab
     with gr.Blocks(analytics_enabled=False, title="Welcome to PromptUI") as demo:
-        with gr.Accordion(label="Usage", open=False):
+        with gr.Accordion(label="HOW TO", open=False):
             gr.Markdown(USAGE_INSTRUCTION)
+        with gr.Accordion(label="Params History", open=False):
+            with gr.Row():
+                save_btn = gr.Button("Save params")
+                save_btn.click(func_save, inputs=params, outputs=history_dataframe)
+                load_params_btn = gr.Button("Reload params")
+                load_params_btn.click(
+                    func_load_params, inputs=None, outputs=history_dataframe
+                )
+            history_dataframe.render()
+            history_dataframe.select(
+                func_activate_params, inputs=params, outputs=params
+            )
         with gr.Row():
             run_btn = gr.Button("Run")
             run_btn.click(func_run, inputs=inputs + params, outputs=outputs)
@@ -95,12 +106,12 @@ def construct_ui(config, func_run, func_export) -> gr.Blocks:
             export_btn.click(func_export, inputs=None, outputs=exported_file)
         with gr.Row():
             with gr.Column():
-                with temp("Inputs"):
-                    for component in inputs:
-                        component.render()
                 with temp("Params"):
                     for component in params:
                         component.render()
+                with temp("Inputs"):
+                    for component in inputs:
+                        component.render()
             with gr.Column():
                 with temp("Outputs"):
                     for component in outputs:
@@ -111,6 +122,23 @@ def construct_ui(config, func_run, func_export) -> gr.Blocks:
     return demo
 
 
+def load_saved_params(path: str) -> Dict:
+    """Load the saved params from path to a dataframe"""
+    # get all pickle files
+    files = list(sorted(Path(path).glob("*.pkl")))
+    data: Dict[str, Any] = {"_id": [None] * len(files)}
+    for idx, each_file in enumerate(files):
+        with open(each_file, "rb") as f:
+            each_data = pickle.load(f)
+        data["_id"][idx] = Path(each_file).stem
+        for key, value in each_data.items():
+            if key not in data:
+                data[key] = [None] * len(files)
+            data[key][idx] = value
+
+    return data
+
+
 def build_pipeline_ui(config: dict, pipeline_def):
     """Build a tab from config file"""
     inputs_name = list(config.get("inputs", {}).keys())
@@ -121,6 +149,16 @@ def build_pipeline_ui(config: dict, pipeline_def):
     exported_dir = output_dir.parent / "exported"
     exported_dir.mkdir(parents=True, exist_ok=True)
 
+    save_dir = (
+        output_dir.parent
+        / "saved"
+        / f"{pipeline_def.__module__}.{pipeline_def.__name__}"
+    )
+    save_dir.mkdir(parents=True, exist_ok=True)
+
+    resultlog = getattr(pipeline_def, "_promptui_resultlog", ResultLog)
+    allowed_resultlog_callbacks = {i for i in dir(resultlog) if not i.startswith("__")}
+
     def run_func(*args):
         inputs = {
             name: value for name, value in zip(inputs_name, args[: len(inputs_name)])
@@ -142,11 +180,50 @@ def build_pipeline_ui(config: dict, pipeline_def):
             outputs = []
             for output_def in outputs_def:
                 output = pipeline.last_run.logs(output_def["step"])
-                if "item" in output_def:
-                    output = output[output_def["item"]]
+                getter = output_def.get("getter", None)
+                if getter and getter in allowed_resultlog_callbacks:
+                    output = getattr(resultlog, getter)(output)
                 outputs.append(output)
+            if len(outputs_def) == 1:
+                return outputs[0]
             return outputs
 
+    def save_func(*args):
+        params = {name: value for name, value in zip(params_name, args)}
+        filename = save_dir / f"{int(time.time())}.pkl"
+        with open(filename, "wb") as f:
+            pickle.dump(params, f)
+        gr.Info("Params saved")
+
+        data = load_saved_params(str(save_dir))
+        return pd.DataFrame(data)
+
+    def load_params_func():
+        data = load_saved_params(str(save_dir))
+        return pd.DataFrame(data)
+
+    def activate_params_func(ev: gr.SelectData, *args):
+        data = load_saved_params(str(save_dir))
+        output_args = [each for each in args]
+        if ev.value is None:
+            gr.Info(f'Blank value: "{ev.value}". Skip')
+            return output_args
+
+        column = list(data.keys())[ev.index[1]]
+
+        if column not in params_name:
+            gr.Info(f'Column "{column}" not in params. Skip')
+            return output_args
+
+        value = data[column][ev.index[0]]
+        if value is None:
+            gr.Info(f'Blank value: "{ev.value}". Skip')
+            return output_args
+
+        output_args[params_name.index(column)] = value
+
+        return output_args
+
     def export_func():
         name = (
             f"{pipeline_def.__module__}.{pipeline_def.__name__}_{datetime.now()}.xlsx"
@@ -160,31 +237,6 @@ def build_pipeline_ui(config: dict, pipeline_def):
         gr.Info(f"Exported {name}. Please go to the `Exported file` tab to download")
         return path
 
-    return construct_ui(config, run_func, export_func)
-
-
-def build_from_dict(config: Union[str, dict]):
-    """Build a full UI from YAML config file"""
-
-    if isinstance(config, str):
-        with open(config) as f:
-            config_dict: dict = yaml.safe_load(f)
-    elif isinstance(config, dict):
-        config_dict = config
-    else:
-        raise ValueError(
-            f"config must be either a yaml path or a dict, got {type(config)}"
-        )
-
-    demos = []
-    for key, value in config_dict.items():
-        pipeline_def = import_dotted_string(key, safe=False)
-        demos.append(build_pipeline_ui(value, pipeline_def))
-    if len(demos) == 1:
-        demo = demos[0]
-    else:
-        demo = gr.TabbedInterface(demos, list(config_dict.keys()))
-
-    demo.queue()
-
-    return demo
+    return construct_pipeline_ui(
+        config, run_func, save_func, load_params_func, activate_params_func, export_func
+    )
diff --git a/knowledgehub/llms/__init__.py b/knowledgehub/llms/__init__.py
index e69de29..5d725a0 100644
--- a/knowledgehub/llms/__init__.py
+++ b/knowledgehub/llms/__init__.py
@@ -0,0 +1,13 @@
+from langchain.schema.messages import AIMessage, SystemMessage
+
+from .chats import AzureChatOpenAI, ChatLLM
+from .chats.base import BaseMessage, HumanMessage
+
+__all__ = [
+    "ChatLLM",
+    "AzureChatOpenAI",
+    "BaseMessage",
+    "HumanMessage",
+    "AIMessage",
+    "SystemMessage",
+]
diff --git a/knowledgehub/llms/chats/__init__.py b/knowledgehub/llms/chats/__init__.py
index e69de29..7eb20c0 100644
--- a/knowledgehub/llms/chats/__init__.py
+++ b/knowledgehub/llms/chats/__init__.py
@@ -0,0 +1,4 @@
+from .base import ChatLLM
+from .openai import AzureChatOpenAI
+
+__all__ = ["ChatLLM", "AzureChatOpenAI"]
diff --git a/setup.py b/setup.py
index d011d2e..fe42a73 100644
--- a/setup.py
+++ b/setup.py
@@ -39,6 +39,7 @@ setuptools.setup(
         "openpyxl",
         "cookiecutter",
         "click",
+        "pandas",
     ],
     extras_require={
         "dev": [