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Pydantic AI Updates: May 5, 2026

pydantic-ai openai opentelemetry releases

1. Pydantic AI v1.90.0 Adds OpenAI Conversations API and Typed OTel Code-Tool Metadata

Pydantic AI. v1.90.0 introduces support for the OpenAI Conversations API via OpenAIResponsesModelSettings.openai_conversation_id, letting Pydantic AI agents pin a server-side conversation rather than re-shipping history each turn. The release also adds typed OpenTelemetry metadata for code-tool syntax highlighting (better-rendered traces in OTel-aware UIs) and bumps the bundled web UI to 1.2.0. Source