Claude Opus 4.1
claude-opus-4-1-20250805
buried here: claude-opus-4-1-20250805
2025-08-05 — 2026-08-05 · lived 11 months
A point release that shipped as a drop-in — same price, same API footprint, a few points better at the benchmark everyone was watching — and it outlived the generation it improved on by seven weeks. It was retired on 5 August 2026, one year to the day after it arrived.
- Provider
- Anthropic
- Cause of death
- Superseded
- Notice given
- 2026-06-05