pydantic/pydantic-ai v2.65.0

v2.65.0 (2026-11-02)

on GitHub

What's Changed

⚠️ Compatibility Notes

• Protect the gh-aw canonical session capture from agent tools by @dsfaccini in #10606
• Add multimodal notes to AskUserAnswer by @dsfaccini in #11664
• Count BrowserUse model calls toward the host run's usage and UsageLimits by @mpfaffenberger in #11860
• Name the V2 replacement when code imports a name V2 removed, like OpenAIModel or MCPServerStdio by @DouweM in #12035
• Fall back to the next model in ModelFallback when a model refuses, and let ContentFilterError in fallback_on match refusals by @DouweM in #12039
• Raise ModelQuotaExceededError instead of ModelRateLimitError for Z.ai balance and plan-limit 429s by @DouweM in #12042
• Support the '12h' prompt cache retention on the OpenAI Responses API for GPT-5.6 and later by @DouweM in #12046
• Send Google a server deadline of at least 20 minutes instead of the client's read timeout, and warn about httpx's 5 s default by @DouweM in #12057
• Stop Temporal from retrying model errors that can't succeed on retry by default, via non_retryable_model_errors by @DouweM in #12107

🚀 Features

• Add WebSocket transport to OpenAI Responses by @dsfaccini in #10444
• Add ConversationStore, which keeps a conversation as a log of messages stored once, and Conversation.revision to catch conflicting saves by @DouweM in #10658
• Add multimodal notes to AskUserAnswer by @dsfaccini in #11664
• Add anthropic_web_tools_allowed_callers to set allowed_callers on Anthropic's web tools by @aweis89 in #10489
• Support the '12h' prompt cache retention on the OpenAI Responses API for GPT-5.6 and later by @DouweM in #12046
• Send mid-conversation system prompts natively on OpenRouter OpenAI routes and the Claude models that support them by @DouweM in #12056
• Name the V2 replacement when code imports a name V2 removed, like OpenAIModel or MCPServerStdio by @DouweM in #12035
• Fall back to the next model in ModelFallback when a model refuses, and let ContentFilterError in fallback_on match refusals by @DouweM in #12039

🐛 Bug Fixes

• Raise ModelContextWindowExceededError and ModelQuotaExceededError for Bedrock errors on AsyncAnthropicBedrock by @DouweM in #12040
• Raise ContentFilterError instead of TypeError when Azure filters a streamed OpenAIChatModel prompt by @DouweM in #12041
• Re-surface nested RepoContext instruction files after compaction, and stop repeating notes still in history by @DouweM in #11704
• Include the refusal text in ContentFilterError when the provider also reports a finish reason by @DouweM in #12036
• Raise ModelQuotaExceededError instead of ModelRateLimitError for Z.ai balance and plan-limit 429s by @DouweM in #12042
• Protect the gh-aw canonical session capture from agent tools by @dsfaccini in #10606
• Close PlaywrightBrowser's Chromium and driver when an anyio scope cancels a run by @dsfaccini in #12047
• Ask Coder to match the surrounding code's style instead of applying SOLID by @mpfaffenberger in #12120
• Return a Coder tool's error to the model once its retries run out instead of ending the run by @mpfaffenberger in #12121
• Keep *args and **kwargs docstring descriptions on tool parameters by @Aryapatel-007 in #12126
• Read tool parameter descriptions from Keyword Args and Other Parameters docstring sections by @roydonsequeira in #10035
• Let a retired aws_lambda agent loop finish its own cleanup at the grace deadline by @dsfaccini in #12140
• Treat auth='' as unset alongside client in GitHub, Notion, Ordinal, PostHog, Pylon, and Slack by @mpfaffenberger in #11852
• Count BrowserUse model calls toward the host run's usage and UsageLimits by @mpfaffenberger in #11860
• Let FileSystem tools emit their events under PrefixTools by @mpfaffenberger in #11867
• Forward cache='1h' to Claude Haiku 5.5 on Bedrock instead of snapping it to '5m' by @DouweM in #12045
• Mark <context> elements in user and tool content as not from the application by @DouweM in #12050
• Stop Temporal from retrying subclasses of non-retryable errors, like ContentFilterError or a UserError subclass by @DouweM in #12105
• Stop Temporal from retrying model errors that can't succeed on retry by default, via non_retryable_model_errors by @DouweM in #12107
• Stop sending a history container on Anthropic requests without code execution by @dsfaccini in #11764
• Send Google a server deadline of at least 20 minutes instead of the client's read timeout, and warn about httpx's 5 s default by @DouweM in #12057
• Place the OpenRouter Gemini message cache breakpoint before the final message, where it no longer doubles the billed prompt by @DouweM in #12048

📦 Dependencies

• Remove the Daytona close() workaround and require daytona>=0.226.1 by @mislavivanda in #11977

New Contributors

• @Aryapatel-007 made their first contribution in #12126
• @roydonsequeira made their first contribution in #10035
• @mislavivanda made their first contribution in #11977

Full Changelog: v2.64.0...v2.65.0