LangChain OSS
@LangChain_OSS
Ship great agents fast with our open source frameworks â LangChain, LangGraph, and Deep Agents. Maintained by @LangChain.
Joined January 2026
6 Following 4.2K Followers
What's new in LangChain? đ
đ§¯ Standard exceptions: chat models now raise standard exception types across providers, so you can distinguish retryable errors (timeouts, rate limits, etc.) in a consistent way. Fully backward compatible.
𧊠Agent middleware: custom token_counter in ContextEditingMiddleware, plus non-retryable exceptions now skip retries in ModelRetryMiddleware (
đĨ Fireworks document reranking: a new reranker integration (
đ Token & usage accounting: bug fixes for xAI and DeepSeek (
⥠Portability & perf: lazy transformers import, and tighter grep scope for Anthropic (
This is your harness! Thanks to everyone who made it better. đ
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