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Pydantic AI Updates: May 7, 2026

pydantic-ai releases openai deepseek

1. Pydantic AI v1.91.0 Adds gpt-image-2 Options and Deepseek V4 Models

Pydantic AI. Pydantic AI 1.91.0 wires up OpenAI’s gpt-image-2 configuration knobs and adds first-class support for deepseek-v4-flash and deepseek-v4-pro. The release also fixes Unicode preservation in YAML eval datasets, empty ModelResponse handling for the OpenAI Chat assistant mapping, and MCP history replay for tools called with no arguments. Source