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Pydantic AI Updates: April 17, 2026

pydantic-ai claude ollama release open-source

1. Pydantic AI v1.84.0 Ships with Claude Opus 4.7 Support

Pydantic AI. The v1.84.0 release lands same-day support for Claude Opus 4.7, adds stateful compaction mode for OpenAICompaction, and introduces an OllamaModel subclass with corrected capability flags for structured output on Ollama Cloud. The release also hardens Google FileSearchTool response parsing against an exponential-time regex pattern and fixes deferred tool search keyword matching, openai_logprobs streaming, null text handling in the OpenAI Responses API, and retry chaining. Worth grabbing the update if you are already wired into Opus 4.7 elsewhere. Source