Claude API
Claude API is an Anthropic product filed under Generative AI Software. Lifecycle: versioned, 31 versions listed, latest Claude Haiku 5.5 (claude-haiku-5-5) (7 Oct 2026).
Releases and Lifecycle
All Anthropic productsRelease and support dates as published by Anthropic; dates within the next 12 months are highlighted, past dates dimmed. Retrieved 2026-10-14.
Claude API 31 versions
Versions are Claude models on the Claude API. Active models have only a tentative retirement date of 'not sooner than' a stated day (not shown as an end date); Anthropic gives at least 60 days' notice before retiring a publicly released model. Where Anthropic states a deprecation date it is shown as end of standard support, and the retirement date as end of life. Release dates are the launch dates in the Claude Platform release notes; none is published for the Claude 1, 2 and 3 models.
| Version | Released | End of standard support | End of life | Source |
|---|---|---|---|---|
| Claude Haiku 5.5 (claude-haiku-5-5)Model deprecation policy | – | – | [1][2] | |
| Claude Sonnet 5.5 (claude-sonnet-5-5)Model deprecation policy | – | – | [1][2] | |
| Claude Opus 5.5 (claude-opus-5-5)Model deprecation policy | – | – | [1][2] | |
| Claude Fable 5.1 (claude-fable-5-1)Model deprecation policy | – | – | [1][2] | |
| Claude Mythos 5.1 (claude-mythos-5-1)Model deprecation policy | – | – | [1][2] | |
| Claude Opus 5 (claude-opus-5)Model deprecation policy | – | – | [1][2] | |
| Claude Sonnet 5 (claude-sonnet-5)Model deprecation policy | – | – | [1][2] | |
| Claude Fable 5 (claude-fable-5)Model deprecation policy | – | – | [1][2] | |
| Claude Mythos 5 (claude-mythos-5)Model deprecation policy | – | – | [1][2] | |
| Claude Mythos Preview (claude-mythos-preview)Model deprecation policy | – | – | [1] | |
| Claude Opus 4.8 (claude-opus-4-8)Model deprecation policy | – | – | [1][2] | |
| Claude Opus 4.7 (claude-opus-4-7)Model deprecation policy | – | – | [1][2] | |
| Claude Sonnet 4.6 (claude-sonnet-4-6)Model deprecation policy | – | – | [1][2] | |
| Claude Opus 4.6 (claude-opus-4-6)Model deprecation policy | – | – | [1][2] | |
| Claude Opus 4.5 (claude-opus-4-5-20251101)Model deprecation policy | – | – | [1][2] | |
| Claude Haiku 4.5 (claude-haiku-4-5-20251001)Model deprecation policy | – | – | [1][2] | |
| Claude Sonnet 4.5 (claude-sonnet-4-5-20250929)Model deprecation policy | [1][2] | |||
| Claude Opus 4.1 (claude-opus-4-1-20250805)Model deprecation policy | [1][2] | |||
| Claude Opus 4 (claude-opus-4-20250514)Model deprecation policy | [1][2] | |||
| Claude Sonnet 4 (claude-sonnet-4-20250514)Model deprecation policy | [1][2] | |||
| Claude Sonnet 3.7 (claude-3-7-sonnet-20250219)Model deprecation policy | [1][2] | |||
| Claude Haiku 3.5 (claude-3-5-haiku-20241022)Model deprecation policy | [1][2] | |||
| Claude Sonnet 3.5 (claude-3-5-sonnet-20241022)Model deprecation policy | [1][2] | |||
| Claude Sonnet 3.5 (claude-3-5-sonnet-20240620)Model deprecation policy | [1][2] | |||
| Claude Haiku 3 (claude-3-haiku-20240307)Model deprecation policy | – | [1] | ||
| Claude Opus 3 (claude-3-opus-20240229)Model deprecation policy | – | [1] | ||
| Claude Sonnet 3 (claude-3-sonnet-20240229)Model deprecation policy | – | [1] | ||
| Claude 2.1 (claude-2.1)Model deprecation policy | – | [1] | ||
| Claude 2.0 (claude-2.0)Model deprecation policy | – | [1] | ||
| Claude Instant 1.0 to 1.2 (claude-instant-1.0, 1.1, 1.2)Model deprecation policy | – | [1] | ||
| Claude 1.0 to 1.3 (claude-1.0, 1.1, 1.2, 1.3)Model deprecation policy | – | [1] |
Lifecycle Policy
- Model deprecation policy. Anthropic classes models as Active, Legacy, Deprecated or Retired, assigns a retirement date once a model is deprecated, and gives at least 60 days' notice before retiring a publicly released model. [1]
Sources 2
- Model deprecations - Claude Platform Docs retrieved 2026-10-14
- Claude Platform release notes retrieved 2026-10-14