Gradio ChatInterface Docs

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ChatInterface

gradio.ChatInterface(fn, ···)

Description

ChatInterface is Gradio's high-level abstraction for creating chatbot UIs, and allows you to create a web-based demo around a chatbot model in a few lines of code. Only one parameter is required: fn, which takes a function that governs the response of the chatbot based on the user input and chat history. Additional parameters can be used to control the appearance and behavior of the demo.

Example Usage

import gradio as gr

def echo(message, history):
    return message

demo = gr.ChatInterface(fn=echo, examples=["hello", "hola", "merhaba"], title="Echo Bot")
demo.launch()

Initialization

Parameter	Description
`fn` Callable required	The function to wrap the chat interface around. Should accept two parameters: a string input message and list of two-element lists of the form [[user_message, bot_message], ...] representing the chat history, and return a string response. See the Chatbot documentation for more information on the chat history format.
`multimodal` bool default: False	If True, the chat interface will use a gr.MultimodalTextbox component for the input, which allows for the uploading of multimedia files. If False, the chat interface will use a gr.Textbox component for the input.
`chatbot` Chatbot \| None default: None	An instance of the gr.Chatbot component to use for the chat interface, if you would like to customize the chatbot properties. If not provided, a default gr.Chatbot component will be created.
`textbox` Textbox \| MultimodalTextbox \| None default: None	An instance of the gr.Textbox or gr.MultimodalTextbox component to use for the chat interface, if you would like to customize the textbox properties. If not provided, a default gr.Textbox or gr.MultimodalTextbox component will be created.
`additional_inputs` str \| Component \| list[str \| Component] \| None default: None	An instance or list of instances of gradio components (or their string shortcuts) to use as additional inputs to the chatbot. If components are not already rendered in a surrounding Blocks, then the components will be displayed under the chatbot, in an accordion.
`additional_inputs_accordion_name` str \| None default: None	Deprecated. Will be removed in a future version of Gradio. Use the `additional_inputs_accordion` parameter instead.
`additional_inputs_accordion` str \| Accordion \| None default: None	If a string is provided, this is the label of the `gr.Accordion` to use to contain additional inputs. A `gr.Accordion` object can be provided as well to configure other properties of the container holding the additional inputs. Defaults to a `gr.Accordion(label="Additional Inputs", open=False)`. This parameter is only used if `additional_inputs` is provided.
`examples` list[str] \| list[dict[str, str \| list]] \| None default: None	Sample inputs for the function; if provided, appear below the chatbot and can be clicked to populate the chatbot input.
`cache_examples` bool \| None default: None	If True, caches examples in the server for fast runtime in examples. The default option in HuggingFace Spaces is True. The default option elsewhere is False.
`title` str \| None default: None	a title for the interface; if provided, appears above chatbot in large font. Also used as the tab title when opened in a browser window.
`description` str \| None default: None	a description for the interface; if provided, appears above the chatbot and beneath the title in regular font. Accepts Markdown and HTML content.
`theme` Theme \| str \| None default: None	Theme to use, loaded from gradio.themes.
`css` str \| None default: None	Custom css as a string or path to a css file. This css will be included in the demo webpage.
`js` str \| None default: None	Custom js or path to js file to run when demo is first loaded. This javascript will be included in the demo webpage.
`head` str \| None default: None	Custom html to insert into the head of the demo webpage. This can be used to add custom meta tags, scripts, stylesheets, etc. to the page.
`analytics_enabled` bool \| None default: None	Whether to allow basic telemetry. If None, will use GRADIO_ANALYTICS_ENABLED environment variable if defined, or default to True.
`submit_btn` str \| None \| Button default: "Submit"	Text to display on the submit button. If None, no button will be displayed. If a Button object, that button will be used.
`stop_btn` str \| None \| Button default: "Stop"	Text to display on the stop button, which replaces the submit_btn when the submit_btn or retry_btn is clicked and response is streaming. Clicking on the stop_btn will halt the chatbot response. If set to None, stop button functionality does not appear in the chatbot. If a Button object, that button will be used as the stop button.
`retry_btn` str \| None \| Button default: "🔄 Retry"	Text to display on the retry button. If None, no button will be displayed. If a Button object, that button will be used.
`undo_btn` str \| None \| Button default: "↩️ Undo"	Text to display on the delete last button. If None, no button will be displayed. If a Button object, that button will be used.
`clear_btn` str \| None \| Button default: "🗑️ Clear"	Text to display on the clear button. If None, no button will be displayed. If a Button object, that button will be used.
`autofocus` bool default: True	If True, autofocuses to the textbox when the page loads.
`concurrency_limit` int \| None \| Literal['default'] default: "default"	If set, this is the maximum number of chatbot submissions that can be running simultaneously. Can be set to None to mean no limit (any number of chatbot submissions can be running simultaneously). Set to "default" to use the default concurrency limit (defined by the `default_concurrency_limit` parameter in `.queue()`, which is 1 by default).
`fill_height` bool default: True	If True, the chat interface will expand to the height of window.
`delete_cache` tuple[int, int] \| None default: None	A tuple corresponding [frequency, age] both expressed in number of seconds. Every `frequency` seconds, the temporary files created by this Blocks instance will be deleted if more than `age` seconds have passed since the file was created. For example, setting this to (86400, 86400) will delete temporary files every day. The cache will be deleted entirely when the server restarts. If None, no cache deletion will occur.

Demos

import gradio as gr

def echo(message, history):
    return message["text"]

demo = gr.ChatInterface(fn=echo, examples=[{"text": "hello"}, {"text": "hola"}, {"text": "merhaba"}], title="Echo Bot", multimodal=True)
demo.launch()

import random
import gradio as gr

def random_response(message, history):
    return random.choice(["Yes", "No"])

demo = gr.ChatInterface(random_response)

if __name__ == "__main__":
    demo.launch()

import time
import gradio as gr


def slow_echo(message, history):
    for i in range(len(message)):
        time.sleep(0.05)
        yield "You typed: " + message[: i + 1]


demo = gr.ChatInterface(slow_echo).queue()

if __name__ == "__main__":
    demo.launch()

Guides

Creating A Chatbot Fast

Sharing Your App

← Interface

TabbedInterface →

ChatInterface

Description
Example Usage
Initialization
Demos
Guides