Pydantic AI v2.63.0 (2026-10-27)

Pydantic AI release v2.63.0 includes significant updates across capabilities, runtime interfaces, and model integrations. Key Compatibility Notes: - CodeMode now defaults to catalog=True dynamically, appending revealed tools rather than rewriting cached prompts. - GoogleRealtimeConnection.dial now takes the Gemini Live reconnect replay as a keyword-only replay argument. - Harness LLMReminder default interval changed to interval=10 instead of firing on every request. - Providers with the same canonical system now replay signed and encrypted history data. - GPT-Live delegated replies now terminate at the next pause rather than cutting off mid-sentence upon backend response. Notable Features & Capabilities: - Support added for ag-ui-protocol 1.0 and model gpt-6.1-terra . - Introduced IPythonCodeMode alongside Monty-based CodeMode . - Added DetectLoops capability for detecting and interrupting repetitive action loops. - Added PostgresSpendStore enabling shared SpendLimits budgets over PostgreSQL. - Introduced the public pydantic ai.framing module with helpers ( wrap , neutralize tags , register tag ). - Added task timeout configuration to Dataset.evaluate .

• Verify compatibility if calling GoogleRealtimeConnection.dial with Gemini Live replays, switching to the keyword-only replay argument.
• Review prompt caching and tool revelation behaviors under the new catalog=True default for CodeMode .
• Adjust interval parameters on Harness LLMReminder if per-request triggering is required rather than the new default interval of 10.