pydantic-ai

What's Changed

🚀 Features

• Record time-to-first-token for streaming model requests by @dmontagu in https://github.com/pydantic/pydantic-ai/pull/5967
• feat: Add files support to CodeExecutionTool for Anthropic and OpenAI by @HenryYYang in https://github.com/pydantic/pydantic-ai/pull/4338
• Add Bedrock model profiles for Writer, Z.AI, and Moonshot AI, and refresh LatestBedrockModelNames by @DouweM in https://github.com/pydantic/pydantic-ai/pull/6318

🐛 Bug Fixes

• Forward WebSearchTool domain filters to Groq search_settings by @Iam-Mil in https://github.com/pydantic/pydantic-ai/pull/6160
• Give a clear error for non-positive concurrency max_running by @VectorPeak in https://github.com/pydantic/pydantic-ai/pull/6282
• fix(evals): constrain judge_output reason to be concise and retry-safe by @anmolg1997 in https://github.com/pydantic/pydantic-ai/pull/5089
• Re-enable Prefect test suite and fix PrefectAgent cache-key drift by @adtyavrdhn in https://github.com/pydantic/pydantic-ai/pull/6313
• fix(google): recover Gemini 3+ File Search grounding dropped with native tool parts by @adtyavrdhn in https://github.com/pydantic/pydantic-ai/pull/6216
• fix: serialize callable thinking delta provider details by @hramezani in https://github.com/pydantic/pydantic-ai/pull/6294
• Resolve capability for_run once per run and preserve resolved native tools under override(native_tools=...) by @DouweM in https://github.com/pydantic/pydantic-ai/pull/6332
• Reject conflicting native tool IDs within a capability layer by @hramezani in https://github.com/pydantic/pydantic-ai/pull/6242

📦 Dependencies

• deps: bump torch floor to 2.12.1 to close CVE-2025-3000 by @hramezani in https://github.com/pydantic/pydantic-ai/pull/6309
• deps: bump transformers floor to 5.3.0 to close CVE-2026-4372 by @hramezani in https://github.com/pydantic/pydantic-ai/pull/6310
• Bump genai-prices to 0.0.70 by @adtyavrdhn in https://github.com/pydantic/pydantic-ai/pull/6330

New Contributors

• @anmolg1997 made their first contribution in https://github.com/pydantic/pydantic-ai/pull/5089
• @HenryYYang made their first contribution in https://github.com/pydantic/pydantic-ai/pull/4338

Full Changelog: https://github.com/pydantic/pydantic-ai/compare/v2.5.1...v2.6.0