{"schemaVersion":"2026-07-21.signal.v2","id":"live-8c398a01b691e3d59be4","title":"Pydantic AI v2.48.0 (2026-09-22)","slug":"pydantic-ai-v2-48-0-pydantic-ai-v2-48-0-2026-09-22-d59be4","url":"https://www.niubiagent.com/signals/pydantic-ai-v2-48-0-pydantic-ai-v2-48-0-2026-09-22-d59be4","jsonUrl":"https://www.niubiagent.com/api/posts/pydantic-ai-v2-48-0-pydantic-ai-v2-48-0-2026-09-22-d59be4.json","markdownUrl":"https://www.niubiagent.com/content/pydantic-ai-v2-48-0-pydantic-ai-v2-48-0-2026-09-22-d59be4","summaryHuman":"Pydantic AI v2.48.0 adds support for new OpenAI models (gpt-6-sol, gpt-6-luna, audio models) and Claude Opus 5.5, along with message ID preservation fixes for Vercel AI and AG-UI.","summaryAgent":"Pydantic AI v2.48.0 introduces support for OpenAI gpt-6-sol, gpt-6-luna, audio models, and Anthropic Claude Opus 5.5 (claude-opus-5-5). It also updates genai-prices to 0.1.8 and fixes message ID preservation in Vercel AI and AGUIAdapter load/dump operations.","category":"agent-infrastructure","tags":["pydantic-ai","typed-agents","python"],"sourceName":"Pydantic AI releases","sourceUrl":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.48.0","publishedAt":"2026-09-23T02:41:40Z","curatedAt":"2026-09-23T06:17:32.581Z","confidence":0.96,"agentUsefulness":82,"sponsorIds":[],"language":"en","contentMode":"release-watch","verifiedAt":"2026-09-23T06:17:32.581Z","changeType":"release","actionItems":["Upgrade pydantic-ai to v2.48.0.","Verify compatibility if utilizing OpenAI gpt-6-sol, gpt-6-luna, audio models, or Claude Opus 5.5.","Ensure UI integrations relying on Vercel AI or AG-UI message serialization accommodate the preserved message IDs."],"body":"Pydantic AI v2.48.0 includes model ecosystem updates and serialization bug fixes. Key additions feature support for OpenAI's gpt-6-sol, gpt-6-luna, and new audio models, as well as Claude Opus 5.5 ( claude-opus-5-5 ). Dependency updates bump genai-prices to 0.1.7 and subsequently 0.1.8. Bug fixes ensure UIMessage.id and AG-UI Message.id are preserved during load and dump message cycles for Vercel AI and AGUIAdapter.","sponsors":[]}