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Pydantic AI Updates: July 25, 2026

pydantic-ai agents open-source python tools

1. Pydantic AI v2.18.0 Adds AdvisorTool Support And Web Access Options

Pydantic AI. Pydantic AI released v2.18.0, introducing AdvisorTool support for Anthropic and OpenRouter along with GoogleCloudProvider enhancements for multi-region deployments. The release adds an external_web_access option to WebSearchTool and a new BedrockMantleProvider with normalized tool-call IDs. It also fixes deferred error mapping in GoogleModel streaming. Source