claude-3-sonnet-20240229
For claude-3-sonnet-20240229, provider is Anthropic; human-readable model name is Claude Sonnet 3; lifecycle status is Retired; deprecation announced is January 21, 2025; shutdown / retirement date is July 21, 2025, recorded from its source on 2026-08-12.
- Provider
- Anthropic verified
- Model ID / API name
- claude-3-sonnet-20240229 verified
- Human-readable model name
- Claude Sonnet 3 verified
- Lifecycle status
- Retired verified
- Deprecation announced
- January 21, 2025 verified
- Shutdown / retirement date
- July 21, 2025 verified
- Recommended replacement
- claude-sonnet-4-6 verified
- Platform / deployment scope
- Anthropic API / Claude Platform on AWS / Microsoft Foundry our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
On January 21, 2025, Anthropic notified developers using Claude 2, Claude 2.1, and Claude Sonnet 3 models of their upcoming retirements. Retirement date | Deprecated model | Recommended replacement | July 21, 2025 | claude-2.0 | claude-opus-4-8 | July 21, 2025 | claude-2.1 | claude-opus-4-8 | July 21, 2025 | claude-3-sonnet-20240229 | claude-sonnet-4-6 | 2024-09-04: 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.
— docs.anthropic.com, retrieved 2026-08-12
Source
- docs.anthropic.comhttps://docs.anthropic.com/en/docs/about-claude/model-deprecations