Model Releases
What's new in LangChain? 🚀 🧯 Standard exceptions: chat models now raise standard exception types across providers, so you can distinguish …
What's new in LangChain? 🚀 🧯 Standard exceptions: chat models now raise standard exception types across providers, so you can distinguish retryable errors (timeouts, rate limits, etc.) in a consistent
What's new in LangChain? 🚀 🧯 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. 🧩 Agent middleware: custom token_counter in ContextEditingMiddleware, plus non-retryable exceptions now skip retries in ModelRetryMiddleware (http://github.com/syyy44, http://github.com/Yigtwxx) 🔥 Fireworks document reranking: a new reranker integration (http://github.com/11adyy) 📊 Token & usage accounting: bug fixes for xAI and DeepSeek (http://github.com/aryansk, http://github.com/nazsats) ⚡ Portability & perf: lazy transformers import, and tighter grep scope for Anthropic (http://github.com/jtoman, http://github.com/Haaaarry) This is your harness! Thanks to everyone who made it better. 🙏
Source: Harrison Chase (X) | 2026-08-20