pydantic-ai 1.18.0

v1.18.0 (2025-11-14)

on Python PyPI

What's Changed

• Add Anthropic prompt caching support by @ronakrm in #3363
• Bump openai to v2.8.0 (v1 still supported), add GPT-5.1 to known model names by @DouweM in #3419
• Bump google-genai to v1.50.1 and remove patches by @DouweM in #3340
• Bump temporalio to v1.19.0 and use SimplePlugin by @DouweM in #3214

New Contributors

• @notrudyyy made their first contribution in #3421
• @ronakrm made their first contribution in #3363

Full Changelog: v1.17.0...v1.18.0