Pydantic AI Updates: July 7, 2026

1. Pydantic AI Releases v2.5.1 Patch With Bedrock and Groq Fixes

Pydantic AI. Pydantic AI released v2.5.1, a patch that improves Bedrock handling of toolResult attachments and media delivery for isolated tool-result turns, and aligns the unified thinking setting to Groq’s reasoning_effort parameter. The update adds retry prompts for empty model responses, validates OnlineEvaluator.max_concurrency to reject non-positive values, and corrects relative schema reference writing for AgentSpec files. It also removes empty ModelResponse entries from Mistral and Cohere requests and preserves FileUrl.force_download settings. Source