# claude-sonnet-4-6 — AI model deprecation and retirement dates by provider For claude-sonnet-4-6, provider is Anthropic; human-readable model name is Claude Sonnet 4.6; lifecycle status is Active; shutdown / retirement date is Not sooner than February 17, 2027; platform / deployment scope is Anthropic API / Claude Platform on AWS / Microsoft Foundry, recorded from its source on 2026-08-12. - **Provider:** Anthropic _(verified: appears in the quote below)_ - **Model ID / API name:** claude-sonnet-4-6 _(verified: appears in the quote below)_ - **Human-readable model name:** Claude Sonnet 4.6 - **Lifecycle status:** Active _(verified: appears in the quote below)_ - **Shutdown / retirement date:** Not sooner than February 17, 2027 _(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-sonnet-4-6 | Active | N/A | Not sooner than February 17, 2027 | claude-sonnet-4-5-20250929 | Active | N/A | Not sooner than September 29, 2026 | claude-sonnet-4-20250514 | Retired | April 14, 2026 | June 15, 2026 | claude-3-7-sonnet-20250219 | Retired | October 28, 2025 | February 19, 2026 | claude-haiku-4-5-20251001 | Active | N/A | Not sooner than October 15, 2026 | claude-3-5-haiku-20241022 | Retired | December 19, 2025 | February 19, 2026 | claude-3-haiku-20240307 | Retired | February 19, 2026 | April 20, 2026 |  Deprecation history All deprecations are listed in the following sections, with the most recent announcements first.  2026-06-05: Claude Opus 4.1 model  This model was retired August 5, 2026. On June 5, 2026, Anthropic notified developers using Claude Opus 4.1 of its upcoming retirement on the Claude API. ## Sources disagree More than one authority states this, and they do not state the same thing. Both are reproduced with the source each came from. ### Provider docs.anthropic.com says provider is **Anthropic**, as of 2026-08-12. > claude-sonnet-4-6 | Active | N/A | Not sooner than February 17, 2027 | claude-sonnet-4-5-20250929 | Active | N/A | Not sooner than September 29, 2026 | claude-sonnet-4-20250514 | Retired | April 14, 2026 | June 15, 2026 | claude-3-7-sonnet-20250219 | Retired | October 28, 2025 | February 19, 2026 | claude-haiku-4-5-20251001 | Active | N/A | Not sooner than October 15, 2026 | claude-3-5-haiku-20241022 | Retired | December 19, 2025 | February 19, 2026 | claude-3-haiku-20240307 | Retired | February 19, 2026 | April 20, 2026 |  Deprecation history All deprecations are listed in the following sections, with the most recent announcements first.  2026-06-05: Claude Opus 4.1 model  This model was retired August 5, 2026. On June 5, 2026, Anthropic notified developers using Claude Opus 4.1 of its upcoming retirement on the Claude API. Source: https://docs.anthropic.com/en/docs/about-claude/model-deprecations learn.microsoft.com says provider is **Microsoft Azure / Foundry**, as of 2026-08-12. > claude-sonnet-4-6 | — | Preview | 2027-02-10 | Source: https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule ### Human-readable model name docs.anthropic.com says human-readable model name is **Claude Sonnet 4.6**, as of 2026-08-12. > claude-sonnet-4-6 | Active | N/A | Not sooner than February 17, 2027 | claude-sonnet-4-5-20250929 | Active | N/A | Not sooner than September 29, 2026 | claude-sonnet-4-20250514 | Retired | April 14, 2026 | June 15, 2026 | claude-3-7-sonnet-20250219 | Retired | October 28, 2025 | February 19, 2026 | claude-haiku-4-5-20251001 | Active | N/A | Not sooner than October 15, 2026 | claude-3-5-haiku-20241022 | Retired | December 19, 2025 | February 19, 2026 | claude-3-haiku-20240307 | Retired | February 19, 2026 | April 20, 2026 |  Deprecation history All deprecations are listed in the following sections, with the most recent announcements first.  2026-06-05: Claude Opus 4.1 model  This model was retired August 5, 2026. On June 5, 2026, Anthropic notified developers using Claude Opus 4.1 of its upcoming retirement on the Claude API. Source: https://docs.anthropic.com/en/docs/about-claude/model-deprecations learn.microsoft.com says human-readable model name is **claude-sonnet-4-6**, as of 2026-08-12. > claude-sonnet-4-6 | — | Preview | 2027-02-10 | Source: https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule ### Lifecycle status docs.anthropic.com says lifecycle status is **Active**, as of 2026-08-12. > claude-sonnet-4-6 | Active | N/A | Not sooner than February 17, 2027 | claude-sonnet-4-5-20250929 | Active | N/A | Not sooner than September 29, 2026 | claude-sonnet-4-20250514 | Retired | April 14, 2026 | June 15, 2026 | claude-3-7-sonnet-20250219 | Retired | October 28, 2025 | February 19, 2026 | claude-haiku-4-5-20251001 | Active | N/A | Not sooner than October 15, 2026 | claude-3-5-haiku-20241022 | Retired | December 19, 2025 | February 19, 2026 | claude-3-haiku-20240307 | Retired | February 19, 2026 | April 20, 2026 |  Deprecation history All deprecations are listed in the following sections, with the most recent announcements first.  2026-06-05: Claude Opus 4.1 model  This model was retired August 5, 2026. On June 5, 2026, Anthropic notified developers using Claude Opus 4.1 of its upcoming retirement on the Claude API. Source: https://docs.anthropic.com/en/docs/about-claude/model-deprecations learn.microsoft.com says lifecycle status is **Preview**, as of 2026-08-12. > claude-sonnet-4-6 | — | Preview | 2027-02-10 | Source: https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule ### Shutdown / retirement date docs.anthropic.com says shutdown / retirement date is **Not sooner than February 17, 2027**, as of 2026-08-12. > claude-sonnet-4-6 | Active | N/A | Not sooner than February 17, 2027 | claude-sonnet-4-5-20250929 | Active | N/A | Not sooner than September 29, 2026 | claude-sonnet-4-20250514 | Retired | April 14, 2026 | June 15, 2026 | claude-3-7-sonnet-20250219 | Retired | October 28, 2025 | February 19, 2026 | claude-haiku-4-5-20251001 | Active | N/A | Not sooner than October 15, 2026 | claude-3-5-haiku-20241022 | Retired | December 19, 2025 | February 19, 2026 | claude-3-haiku-20240307 | Retired | February 19, 2026 | April 20, 2026 |  Deprecation history All deprecations are listed in the following sections, with the most recent announcements first.  2026-06-05: Claude Opus 4.1 model  This model was retired August 5, 2026. On June 5, 2026, Anthropic notified developers using Claude Opus 4.1 of its upcoming retirement on the Claude API. Source: https://docs.anthropic.com/en/docs/about-claude/model-deprecations learn.microsoft.com says shutdown / retirement date is **2027-02-10**, as of 2026-08-12. > claude-sonnet-4-6 | — | Preview | 2027-02-10 | Source: https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule ### Platform / deployment scope docs.anthropic.com says platform / deployment scope is **Anthropic API / Claude Platform on AWS / Microsoft Foundry**, as of 2026-08-12. > claude-sonnet-4-6 | Active | N/A | Not sooner than February 17, 2027 | claude-sonnet-4-5-20250929 | Active | N/A | Not sooner than September 29, 2026 | claude-sonnet-4-20250514 | Retired | April 14, 2026 | June 15, 2026 | claude-3-7-sonnet-20250219 | Retired | October 28, 2025 | February 19, 2026 | claude-haiku-4-5-20251001 | Active | N/A | Not sooner than October 15, 2026 | claude-3-5-haiku-20241022 | Retired | December 19, 2025 | February 19, 2026 | claude-3-haiku-20240307 | Retired | February 19, 2026 | April 20, 2026 |  Deprecation history All deprecations are listed in the following sections, with the most recent announcements first.  2026-06-05: Claude Opus 4.1 model  This model was retired August 5, 2026. On June 5, 2026, Anthropic notified developers using Claude Opus 4.1 of its upcoming retirement on the Claude API. Source: https://docs.anthropic.com/en/docs/about-claude/model-deprecations learn.microsoft.com says platform / deployment scope is **Azure / Microsoft Foundry**, as of 2026-08-12. > claude-sonnet-4-6 | — | Preview | 2027-02-10 | Source: https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule ## Source - https://docs.anthropic.com/en/docs/about-claude/model-deprecations - https://learn.microsoft.com/en-us/azure/foundry/openai/concepts/model-retirement-schedule 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/).