LangServe Chat Playground Launch

We've added a brand-new, chat-focused playground to LangServe! It supports streaming and message history editing, as well as feedback and sharing runs/traces publicly via a tight integration with LangSmith.
Jacob Lee walks you through it here by starting from scratch from a LangChain template, setting up a LangServe app, testing in the new playground, and finally deploying to hosted LangServe.
Enable it for any chain that supports chat input/output by setting `playground_type="chat"` when adding your chain as a route.
LangServe repo 🤖 github.com/langchain-ai/langs...
LangServe docs 📖: python.langchain.com/docs/lan...
LangChain templates 🏴‍☠️: github.com/langchain-ai/langc...
Hosted LangServe Beta Form 🚀: airtable.com/apppQ9p5XuujRl3w...
LangChain Discord 👾: / discord

[@artislove491]

Good stuff! Many thanks for the improvements! 💪

[@zeelthumar]

This feature is awesome

[@AnthonyBatt]

Good to see the progress

[@luanmotta5591]

This tutorial is not working with /rag-conversation template, AI answer only once, not a conversation, could anybody help?

[@estephaniacalvocarvajal594]

Omg thanks a lot! That's awesome 🎉

[@nsyll]

I am waiting for that

[@damirsafin2736]

Hello Jacob. Is there a direct way to use agents that support chats (e.g. OpenAI Tools Agent) as AgentExecutors together with the new chat feature?

[@xspydazx]

can ths work with opensurce local models ? or is it only or chatgpt APi model ?? and this is only providing your custom routes ? why do you need a openapi key if it is self hosted is it still using chatgpt???

[@geo3678]

Thank you for the great tutorial! However, my app crashes as soon as I enable the feedback endpoint, saying "Feedback token task was not created", did I miss something?

[@ibrahimsaidi7239]

Hi Jacob, awesome tutorial. I've submitted a request to get access to Hosted LangServe. Would love to get access 😊

[@saumyajaiswal6585]

how long does it take to get access?

[@ibrahimsaidi7239]

@@saumyajaiswal6585 Still waiting to get access.

[@mademeanalien]

when will it be available, cant use it at the moment

[@jacoblee93]

It's live! You may need to upgrade your version of LangServe, it's only available in the latest one.

[@pinkmatter8488]

When I run the app in chat mode it shows a pop up saying: "Expected content-type to be text/event-stream, Actual: application/json Check your backend logs for errors." Do you have an idea why that is ?