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v1.90.0

pydantic/pydantic-aiv1.90.0May 5, 2026by DouweM

AI Summary

Introduces OpenAI Conversations API state support via `openai_conversation_id` and typed OTel metadata for code tool call syntax highlighting, alongside a web UI upgrade.

Key Highlights

  • Add OpenAI Conversations API state support via `openai_conversation_id`
  • Add typed OTel metadata for code tool call syntax highlighting
  • Upgrade web UI to pydantic/ai-chat-ui 1.2.0

New Features

  • OpenAI Conversations API state support

Full Release Notes

<!-- Release notes generated using configuration in .github/release.yml at main -->

## What's Changed
### 🚀 Features
* feat: add OpenAI Conversations API state support via `OpenAIResponsesModelSettings.openai_conversation_id` by @corytomlinson in https://github.com/pydantic/pydantic-ai/pull/5224
* feat: typed OTel metadata for code tool call syntax highlighting by @DouweM in https://github.com/pydantic/pydantic-ai/pull/5297
### 📦 Dependencies
* Upgrade web UI to `pydantic/ai-chat-ui` 1.2.0 by @johnthagen in https://github.com/pydantic/pydantic-ai/pull/5246

## New Contributors
* @johnthagen made their first contribution in https://github.com/pydantic/pydantic-ai/pull/5246
* @Acacian made their first contribution in https://github.com/pydantic/pydantic-ai/pull/4888
* @VeniVeci made their first contribution in https://github.com/pydantic/pydantic-ai/pull/5283

**Full Changelog**: https://github.com/pydantic/pydantic-ai/compare/v1.89.1...v1.90.0