Anthropic announced Claude Opus 4.1 deprecation and scheduled Claude API retirement for August 5, 2026.

Opus 4.1 API users have a dated migration window to move onto Claude Opus 4.8.

This sits in Anthropic’s model deprecations flow, so builders need to audit dependencies on claude-opus-4-1-20250805.

• Jul 18, 2026Anthropic model card shows no readable text change in this diff.
• Jul 18, 2026Anthropic pricing page removed the Claude plan recommendation questionnaire content.
• Jul 18, 2026ChatGPT scheduled tasks gained a sidebar page for viewing, managing, and editing active tasks.

This is the world we build in. It moves this fast. We move with it.