LangChain supports Claude Opus 4.1 and Sonnet 4’s citable search results — now GA on the Anthropic API and Vertex AI. With this update, you can: • Return search results with built-in titles and source links • Automatically link citations to the tool call that generated them • Skip manual formatting and document workarounds 🐍 LangChain Python docs: ☕ LangChain JS docs: 📓 Learn more from Anthropic:
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