# claude-1.0 — AI model deprecation and retirement dates by provider

For claude-1.0, provider is Anthropic; human-readable model name is Claude 1.0; lifecycle status is Retired; deprecation announced is September 4, 2024; shutdown / retirement date is November 6, 2024, recorded from its source on 2026-08-12.

- **Provider:** Anthropic _(verified: appears in the quote below)_
- **Model ID / API name:** claude-1.0 _(verified: appears in the quote below)_
- **Human-readable model name:** Claude 1.0
- **Lifecycle status:** Retired _(verified: appears in the quote below)_
- **Deprecation announced:** September 4, 2024 _(verified: appears in the quote below)_
- **Shutdown / retirement date:** November 6, 2024 _(verified: appears in the quote below)_
- **Recommended replacement:** claude-haiku-4-5-20251001 _(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

> Claude 1 and Instant models  These models were retired November 6, 2024. On September 4, 2024, Anthropic notified developers using Claude 1 and Instant models of their upcoming retirements. Retirement date | Deprecated model | Recommended replacement | November 6, 2024 | claude-1.0 | claude-haiku-4-5-20251001 |

## 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/).