pydantic-ai

v1.96.1 Bugfix

This release fixes issues for SREs watching stability and regressions.

Published 20d AI Agents & Assistants

✓ No known CVEs patched

✓ No known CVEs patched in this version

Topics

agent-framework genai llm pydantic python

Summary

AI summary

Omit input_fidelity when None for OpenAI image generation and honor the openai_system_prompt_role setting.

Type	Severity	Summary	CVE
Deprecation	Medium	Deprecate Agent constructor prepare_tools, prepare_output_tools, event_stream_handler in favor of PrepareTools, PrepareOutputTools, ProcessEventStream capabilities Deprecate Agent constructor prepare_tools, prepare_output_tools, event_stream_handler in favor of PrepareTools, PrepareOutputTools, ProcessEventStream capabilities Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	Omit input_fidelity when None in image generation tool Omit input_fidelity when None in image generation tool Source: llm_adapter@2026-05-21 Confidence: low	—
Bugfix	Medium	Respect openai_system_prompt_role in OpenAIResponsesModel Respect openai_system_prompt_role in OpenAIResponsesModel Source: llm_adapter@2026-05-21 Confidence: low	—

Full changelog

Deprecate Agent constructor prepare_tools=, prepare_output_tools=, event_stream_handler= in favor of PrepareTools, PrepareOutputTools, ProcessEventStream capabilities by @dsfaccini in https://github.com/pydantic/pydantic-ai/pull/5335

openai: omit input_fidelity when None in image generation tool by @pydanty[bot] in https://github.com/pydantic/pydantic-ai/pull/5415
openai: respect openai_system_prompt_role in OpenAIResponsesModel by @navalprakhar in https://github.com/pydantic/pydantic-ai/pull/5430

@pydanty[bot] made their first contribution in https://github.com/pydantic/pydantic-ai/pull/5415

Full Changelog: https://github.com/pydantic/pydantic-ai/compare/v1.96.0...v1.96.1

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About pydantic-ai

AI Agent Framework, the Pydantic way

v1.95.0 rename ‘built-in tools’ to ‘native tools’, deprecate old fields, register via capabilities=[NativeTool(...)]