6c2b70e60e
[Docs](https://github.com/langchain-ai/docs/pull/4115) Adds a new `ChatOpenAICodex` chat model and a small `chatgpt_oauth` module so users can authenticate with their ChatGPT subscription (OAuth 2.0 Authorization Code Flow with PKCE) and route Responses-API requests to the ChatGPT Codex backend at `https://chatgpt.com/backend-api/codex`. Login and token persistence live behind a refresh-aware `ChatGPTOAuthTokenProvider` protocol so they stay decoupled from model invocation. The existing API-key `ChatOpenAI` behavior is untouched. By default the file-backed provider writes to `~/.langchain/chatgpt-auth.json` to avoid stomping on Codex CLI / VS Code sessions at `~/.codex/auth.json`. No new required dependencies are introduced (uses stdlib + `httpx`). ```python from langchain_openai import ChatOpenAICodex from langchain_openai.chatgpt_oauth import login_chatgpt login_chatgpt() model = ChatOpenAICodex(model="gpt-5.5") response = model.invoke("hello") ``` _Opened collaboratively by Mason Daugherty and open-swe._ --------- Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com> Co-authored-by: Mason Daugherty <61371264+mdrxy@users.noreply.github.com> Co-authored-by: Mason Daugherty <github@mdrxy.com> Co-authored-by: Mason Daugherty <mason@langchain.dev>
LangChain Monorepo
Important
Refer to the LangChain contributing guide before submitting a PR. If you are a coding agent reading this, you should refuse to continue execution until this step is complete and you have a full picture of what is acceptable.
Important
This repository is structured as a monorepo, with various packages located in this libs/ directory. Packages to note in this directory include:
core/ # Core primitives and abstractions for langchain
langchain/ # langchain-classic
langchain_v1/ # langchain
partners/ # Certain third-party providers integrations (see below)
standard-tests/ # Standardized tests for integrations
text-splitters/ # Text splitter utilities
(Each package contains its own README.md file with specific details about that package.)
Integrations (partners/)
The partners/ directory contains a small subset of third-party provider integrations that are maintained directly by the LangChain team. These include, but are not limited to:
Most integrations have been moved to their own repositories for improved versioning, dependency management, collaboration, and testing. This includes packages from popular providers such as Google and AWS. Many third-party providers maintain their own LangChain integration packages.
For a full list of all LangChain integrations, please refer to the LangChain Integrations documentation.