# claude-opus-4-1-20250805 — AI model deprecation and retirement dates by provider

For claude-opus-4-1-20250805, provider is Anthropic; human-readable model name is Claude Opus 4.1; lifecycle status is Retired; deprecation announced is June 5, 2026; shutdown / retirement date is August 5, 2026, recorded from its source on 2026-08-12.

- **Provider:** Anthropic _(verified: appears in the quote below)_
- **Model ID / API name:** claude-opus-4-1-20250805 _(verified: appears in the quote below)_
- **Human-readable model name:** Claude Opus 4.1 _(verified: appears in the quote below)_
- **Lifecycle status:** Retired _(verified: appears in the quote below)_
- **Deprecation announced:** June 5, 2026 _(verified: appears in the quote below)_
- **Shutdown / retirement date:** August 5, 2026 _(verified: appears in the quote below)_
- **Recommended replacement:** claude-opus-4-8 _(verified: appears in the quote below)_
- **Platform / deployment scope:** Anthropic API / Claude Platform on AWS / Microsoft Foundry _(our reading, not quoted from the source)_

## What the source says

> On June 5, 2026, Anthropic notified developers using Claude Opus 4.1 of its upcoming retirement on the Claude API. Retirement date | Deprecated model | Recommended replacement | August 5, 2026 | claude-opus-4-1-20250805 | claude-opus-4-8 |  2026-04-14: Claude Sonnet 4 and Claude Opus 4 models  These models were retired June 15, 2026. On April 14, 2026, Anthropic notified developers using Claude Sonnet 4 and Claude Opus 4 models of their upcoming retirement on the Claude API.

## Source

- https://docs.anthropic.com/en/docs/about-claude/model-deprecations

Last verified: 2026-08-12. Review by: 2026-09-11.
Part of [AI model deprecation and retirement dates by provider](https://referencesource.org/ai-model-deprecation-and-retirement/).