pydantic-ai

v2.13.0 Feature

This release adds 4 notable features for engineering teams evaluating rollout.

Published 9d AI Agents & Assistants

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Topics

agent-framework genai llm pydantic python

Summary

AI summary

Updates 🚀 Features, 🐛 Bug Fixes, and 📦 Dependencies across a mixed release.

Changes in this release

Type	Severity	Summary	CVE
Feature
Feature	Low	Add `include_model_request_parameters` instrumentation setting to omit the `model_request_parameters` span attribute Add `include_model_request_parameters` instrumentation setting to omit the `model_request_parameters` span attribute Source: llm_adapter@2026-07-18 Confidence: high	—
Feature	Low	Add `RaiseContentFilterError` capability to raise content filter error for non-empty responses Add `RaiseContentFilterError` capability to raise content filter error for non-empty responses Source: llm_adapter@2026-07-18 Confidence: high	—
Feature	Low	Add `cache_hit_ratio` property to `RequestUsage` and `RunUsage` objects Add `cache_hit_ratio` property to `RequestUsage` and `RunUsage` objects Source: llm_adapter@2026-07-18 Confidence: high	—
Feature	Low	Add `get_model`, `resolve_model_id`, and `for_agent` capability hooks Add `get_model`, `resolve_model_id`, and `for_agent` capability hooks Source: llm_adapter@2026-07-18 Confidence: high	—
Dependency	Low	Bump dependency `mcp` to version 1.28.1 for Dependabot alerts Bump dependency `mcp` to version 1.28.1 for Dependabot alerts Source: llm_adapter@2026-07-18 Confidence: high	—
Bugfix
Bugfix	Medium	Fix `MistralModel` streaming settings to behave correctly Fix `MistralModel` streaming settings to behave correctly Source: llm_adapter@2026-07-18 Confidence: high	—
Bugfix	Medium	Close open message parts on UI stream error to prevent leaks Close open message parts on UI stream error to prevent leaks Source: llm_adapter@2026-07-18 Confidence: high	—
Bugfix	Medium	Fix spurious OTel `Failed to detach context` error when a streamed run is interrupted mid-segment Fix spurious OTel `Failed to detach context` error when a streamed run is interrupted mid-segment Source: llm_adapter@2026-07-18 Confidence: high	—
Bugfix	Medium	Pass through `pydantic_monty` in workflow sandbox for temporal operations Pass through `pydantic_monty` in workflow sandbox for temporal operations Source: llm_adapter@2026-07-18 Confidence: high	—
Bugfix	Medium	Fix spurious OTel `Failed to detach context` error when a streamed run is interrupted mid-segment (duplicate entry for audit) Fix spurious OTel `Failed to detach context` error when a streamed run is interrupted mid-segment (duplicate entry for audit) Source: llm_adapter@2026-07-18 Confidence: high	—

Full changelog

What's Changed

🚀 Features

Add include_model_request_parameters instrumentation setting to omit the model_request_parameters span attribute by @dsfaccini in https://github.com/pydantic/pydantic-ai/pull/6488
Add RaiseContentFilterError capability to raise content filter error for non-empty content filter responses by @dsfaccini in https://github.com/pydantic/pydantic-ai/pull/6167
feat(usage): add cache_hit_ratio property to RequestUsage and RunUsage by @DouweM in https://github.com/pydantic/pydantic-ai/pull/6529
Add get_model, resolve_model_id, and for_agent capability hooks by @DouweM in https://github.com/pydantic/pydantic-ai/pull/6333

🐛 Bug Fixes

Fix MistralModel streaming settings by @adtyavrdhn in https://github.com/pydantic/pydantic-ai/pull/6563
Close open message parts (text, thinking, tool calls) on UI stream error by @dsfaccini in https://github.com/pydantic/pydantic-ai/pull/6550
Fix spurious OTel Failed to detach context error when a streamed run is interrupted mid-segment by @dsfaccini in https://github.com/pydantic/pydantic-ai/pull/6572
fix(temporal): pass through pydantic_monty in workflow sandbox by @adtyavrdhn in https://github.com/pydantic/pydantic-ai/pull/6564

📦 Dependencies

deps: bump mcp to 1.28.1 for Dependabot alerts by @adtyavrdhn in https://github.com/pydantic/pydantic-ai/pull/6562

Full Changelog: https://github.com/pydantic/pydantic-ai/compare/v2.12.0...v2.13.0

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