Anthropic
claude-opus-4-1
☠ Dead
Yes. claude-opus-4-1 was shut down on August 5, 2026. Requests to it fail.
This is an alias of claude-opus-4-1-20250805, so it follows the same date.
Recommended replacement: claude-opus-4-8
Source: Anthropic deprecation page, announced June 5, 2026.
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Or one line in a terminal or in CI (fails if a dead ID is found): curl -sL https://lira-ia.github.io/model-check/check.py | python3 - . · GitHub Action