pydantic-ai 1.105.0

v1.105.0 (2026-06-02)

on Python PyPI

What's Changed

🚀 Features

• feat: On-demand (deferred loading) capabilities, including instructions, tools, model settings, and hooks by @adtyavrdhn in #5230
• Add Grok 4.3 reasoning_effort support and current xAI model names by @adtyavrdhn in #5454

🐛 Bug Fixes

• Fix gateway/ model construction inside a Temporal workflow by passing provider SDKs through the sandbox by @adtyavrdhn in #5733
• Fix GoogleModelSettings.google_cached_content so request omits system_instruction, tools, and tool_config by @gaurav0107 in #5681

New Contributors

• @gaurav0107 made their first contribution in #5681

Full Changelog: v1.104.0...v1.105.0