
Open-source Python boilerplate for streaming AI chat applications using FastAPI, LangGraph, LangChain, and OpenAI-compatible models, with SQLite persistence, conversation branching, message editing, and a Markdown UI.
Prices and medians update for the tier you select.
Ranked by how closely each one matches FastAPI LangGraph Chat's job. Prices show each provider's Pro state; entry prices are labelled as such. Unpriced products still belong to the market.
Market = the products most similar to this one by capability; prices are median / quartiles over its priced members, separated by provider type and buyer tier.