@LangChain_OSS: What's new in LangChain? Support for OpenAI's 3.0 SDK (using httpx2) Support for gemini-3.7-flash Plus a wave of core r…
Summary
LangChain announces updates including support for OpenAI's 3.0 SDK and Gemini 3.7 Flash, along with various reliability fixes contributed by the community.
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Cached at: 08/15/26, 04:04 PM
What’s new in LangChain?
Support for OpenAI’s 3.0 SDK (using httpx2) Support for gemini-3.7-flash
Plus a wave of core reliability fixes from external contributors:
Tool calling & structured output: clearer errors, respect for pydantic aliases when validating tool inputs (http://github.com/RinZ27, http://github.com/kinch-tech, http://github.com/charan16)
Usage metadata fixes: token usage callback bugs, and cost metadata when streaming OpenRouter (http://github.com/Solaris-star, http://github.com/iroiro147)
Content & prompt hardening: guard malformed Anthropic content blocks, and preserve non-str/non-dict items in prompt templates for content blocks (http://github.com/Oxygen56, http://github.com/zerafachris)
Huge thanks to everyone who contributed!
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