pydantic/pydantic-ai v2.49.0

v2.49.0 (2026-09-23)

on GitHub

What's Changed

🚀 Features

• Add GitHubCopilotOAuthFlow for device authorization by @Kludex in #8618
• Add BoolCriteria to say what a bool field's yes and no mean, and let a True/False Enum do the same by @DouweM in #8586
• Use what the user wrote about None as the "none of these" option in TypeSafeModel by @DouweM in #8684
• Offer whole numbers that are not a rubric as a Choice in TypeSafeModel by @DouweM in #8686
• Add RealtimeSession.wait_for_reply() by @DouweM in #8514

🐛 Bug Fixes

• Keep all streamed OpenAIChatModel logprobs in provider_details['logprobs'] by @adtyavrdhn in #8653
• Allow gpt-6-sol, gpt-6-luna, and gpt-6-astra on Bedrock Converse by @sevakva in #8656
• fix: preserve fanned producer contributions in graph joins by @FIITAY in #8385
• Surface @GraphBuilder.stream node errors in-context during graph.iter() by @pydanty in #8304
• Forward Cloud Storage gs:// references as fileData in GoogleImageGenerationModel on Vertex AI by @dorukgezici in #8225
• Preserve output tool names and descriptions for Annotated model types by @ikriv in #8608
• Type None in a list of output types as | None so output_type=[Foo, Bar, None] passes pyright by @DouweM in #8641
• Fix google_proactive_audio, which no Gemini Live session could ever connect with by @DouweM in #8394
• Drop temperature and top_p for OpenAI GPT-5.6 and GPT-6 on Bedrock Converse instead of failing with a 400 by @kimnamu in #8668
• Let a field's default apply when TypeSafeModel answers "None of these" for an optional field by @DouweM in #8685
• Surface realtime receive-side failures to every consumer shape, and end send_audio(iterable) cleanly on close by @DouweM in #8138
• Keep Annotated metadata on the members of an X | Y output_type by @DouweM in #8687
• Keep an uninstrumented delegate's usage off its caller's agent run span by @DouweM in #8689
• Let a nested model's default apply when TypeSafeModel answers "None of these" for every field under it by @DouweM in #8697
• Accept Annotated, Literal and union output_types as PEP 747 TypeForms, and bump pyright to 1.1.414 by @DouweM in #8690
• Make RunContext.tracer, trace_include_content and instrumentation_version follow an explicit Instrumentation capability by @DouweM in #8706
• Send deferred tools with native tool search on OpenAICodexModel instead of failing with a 400 by @aweis89 in #8693

New Contributors

• @FIITAY made their first contribution in #8385
• @ikriv made their first contribution in #8608
• @aweis89 made their first contribution in #8693

Full Changelog: v2.48.0...v2.49.0