# Claude Opus 4.1

> 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.

2025-08-05 — 2026-08-05 · lived 11 months

Buried here: `claude-opus-4-1-20250805`

## The record

- Provider: Anthropic
- Model id: `claude-opus-4-1-20250805`
- Cause of death: Superseded
- Notice given: 2026-06-05

## Sources

- https://platform.claude.com/docs/en/about-claude/model-deprecations
- https://aws.amazon.com/about-aws/whats-new/2025/08/anthropic-claude-opus-4-1-amazon-bedrock/

## Elsewhere

- [Stand at this grave](https://models.rip/claude-opus-4-1)
- [The Anthropic plot](https://models.rip/anthropic)
- [The whole cemetery](https://models.rip/)