Update pydantic-ai-slim[logfire] requirement from >=1.90.0 to >=1.91.0

[dependabot]

Updates the requirements on pydantic-ai-slim[logfire] to permit the latest version.

Release notes

Sourced from pydantic-ai-slim[logfire]'s releases.

v1.91.0 (2026-05-06)

What's Changed

🚀 Features

• feat(openai): support gpt-image-2 options by @​banteg in pydantic/pydantic-ai#5234
• feat(deepseek): add support for deepseek-v4-flash anddeepseek-v4-pro by @​SuperMarioYL in pydantic/pydantic-ai#5195

🐛 Bug Fixes

• fix(evals): preserve Unicode in YAML datasets by @​Kcstring in pydantic/pydantic-ai#5245
• Skip empty ModelResponse in OpenAI Chat assistant message mapping by @​DouweM in pydantic/pydantic-ai#5300
• Fix MCP history replay for empty tool arguments by @​adtyavrdhn in pydantic/pydantic-ai#5314

New Contributors

• @​Kcstring made their first contribution in pydantic/pydantic-ai#5245
• @​khaldon made their first contribution in pydantic/pydantic-ai#5301
• @​SuperMarioYL made their first contribution in pydantic/pydantic-ai#5195
• @​banteg made their first contribution in pydantic/pydantic-ai#5234

Full Changelog: pydantic/pydantic-ai@v1.90.0...v1.91.0

Changelog

Sourced from pydantic-ai-slim[logfire]'s changelog.

Upgrade Guide

In September 2025, Pydantic AI reached V1, which means we're committed to API stability: we will not introduce changes that break your code until V2. For more information, review our Version Policy.

Breaking Changes

Here's a filtered list of the breaking changes for each version to help you upgrade Pydantic AI.

v1.0.1 (2025-09-05)

The following breaking change was accidentally left out of v1.0.0:

• See #2808 - Remove Python evaluator from pydantic_evals for security reasons

v1.0.0 (2025-09-04)

• See #2725 - Drop support for Python 3.9
• See #2738 - Make many dataclasses require keyword arguments
• See #2715 - Remove cases and averages attributes from pydantic_evals spans
• See #2798 - Change ModelRequest.parts and ModelResponse.parts types from list to Sequence
• See #2726 - Default InstrumentationSettings version to 2
• See #2717 - Remove errors when passing AsyncRetrying or Retrying object to AsyncTenacityTransport or TenacityTransport instead of RetryConfig

v0.x.x

Before V1, minor versions were used to introduce breaking changes:

v0.8.0 (2025-08-26)

See #2689 - AgentStreamEvent was expanded to be a union of ModelResponseStreamEvent and HandleResponseEvent, simplifying the event_stream_handler function signature. Existing code accepting AgentStreamEvent | HandleResponseEvent will continue to work.

v0.7.6 (2025-08-26)

The following breaking change was inadvertently released in a patch version rather than a minor version:

See #2670 - TenacityTransport and AsyncTenacityTransport now require the use of pydantic_ai.retries.RetryConfig (which is just a TypedDict containing the kwargs to tenacity.retry) instead of tenacity.Retrying or tenacity.AsyncRetrying.

v0.7.0 (2025-08-12)

See #2458 - pydantic_ai.models.StreamedResponse now yields a FinalResultEvent along with the existing PartStartEvent and PartDeltaEvent. If you're using pydantic_ai.direct.model_request_stream or pydantic_ai.direct.model_request_stream_sync, you may need to update your code to account for this.

See #2458 - pydantic_ai.models.Model.request_stream now receives a run_context argument. If you've implemented a custom Model subclass, you will need to account for this.

See #2458 - pydantic_ai.models.StreamedResponse now requires a model_request_parameters field and constructor argument. If you've implemented a custom Model subclass and implemented request_stream, you will need to account for this.

v0.6.0 (2025-08-06)

This release was meant to clean some old deprecated code, so we can get a step closer to V1.

See #2440 - The next method was removed from the Graph class. Use async with graph.iter(...) as run: run.next() instead.

... (truncated)

Commits

• b83abdf ci: drop safe-for-ci label gating on harness-compat (#5323)
• 0933748 feat(openai): support gpt-image-2 options (#5234)
• ff4c263 ci: add harness-compat job that runs the harness suite against pydantic-ai PR...
• 820b4d0 fix(deepseek): add support for deepseek-v4-flash anddeepseek-v4-pro (#5195)
• 999a2b5 Center index header image by adding margin auto (#5317)
• 2f492ee chore: fix README logo asset URLs (#5301)
• 54a6d19 chore(anthropic): re-record native-output cassettes for structured-outputs GA...
• 30ed701 Fix MCP history replay for empty tool arguments (#5314)
• 549ba0d chore: adding library skills docs (#5315)
• 4e91659 Skip empty ModelResponse in OpenAI Chat assistant message mapping (#5300)
• Additional commits viewable in compare view

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