anthropic 0.121.0

v0.121.0

on Python PyPI

0.121.0 (2026-08-07)

Full Changelog: v0.120.2...v0.121.0

Features

• api: add mid-conversation-tool-changes-2026-07-01 beta (c7d1531)
• api: add support for session budgets, advisor tool, pinned inference location and skills auto-loading from GitHub (193bae0)

Chores

• api: remove retired Claude Opus 4.1 models (5352a33)
• docs: small updates to descriptions (b8d4176)
• docs: updates to a few documentation strings (3a5dd69)
• ensure all dependencies have major version constraints (#274) (d52999b)