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chainlit
Build Conversational AI in minutes β‘οΈ
Stars: 8376
![screenshot](/screenshots_githubs/Chainlit-chainlit.jpg)
Chainlit is an open-source async Python framework which allows developers to build scalable Conversational AI or agentic applications. It enables users to create ChatGPT-like applications, embedded chatbots, custom frontends, and API endpoints. The framework provides features such as multi-modal chats, chain of thought visualization, data persistence, human feedback, and an in-context prompt playground. Chainlit is compatible with various Python programs and libraries, including LangChain, Llama Index, Autogen, OpenAI Assistant, and Haystack. It offers a range of examples and a cookbook to showcase its capabilities and inspire users. Chainlit welcomes contributions and is licensed under the Apache 2.0 license.
README:
Build production-ready Conversational AI applications in minutes, not weeks β‘οΈ
Chainlit is an open-source async Python framework which allows developers to build scalable Conversational AI or agentic applications.
Full documentation is available here. You can ask Chainlit related questions to Chainlit Help, an app built using Chainlit!
https://github.com/user-attachments/assets/b3738aba-55c0-42fa-ac00-6efd1ee0d148
Open a terminal and run:
pip install chainlit
chainlit hello
If this opens the hello app
in your browser, you're all set!
The latest in-development version can be installed straight from GitHub with:
pip install git+https://github.com/Chainlit/chainlit.git#subdirectory=backend/
(Requires Node and pnpm installed on the system.)
Create a new file demo.py
with the following code:
import chainlit as cl
@cl.step(type="tool")
async def tool():
# Fake tool
await cl.sleep(2)
return "Response from the tool!"
@cl.on_message # this function will be called every time a user inputs a message in the UI
async def main(message: cl.Message):
"""
This function is called every time a user inputs a message in the UI.
It sends back an intermediate response from the tool, followed by the final answer.
Args:
message: The user's message.
Returns:
None.
"""
# Call the tool
tool_res = await tool()
await cl.Message(content=tool_res).send()
Now run it!
chainlit run demo.py -w
You can find various examples of Chainlit apps here that leverage tools and services such as OpenAI, AnthropiΡ, LangChain, LlamaIndex, ChromaDB, Pinecone and more.
Tell us what you would like to see added in Chainlit using the Github issues or on Discord.
As an open-source initiative in a rapidly evolving domain, we welcome contributions, be it through the addition of new features or the improvement of documentation.
For detailed information on how to contribute, see here.
Chainlit is open-source and licensed under the Apache 2.0 license.
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