# Latest Claude model: Claude Haiku 5.5 family: claude page: /models/claude as_of: 2026-11-04 developer: /record/anthropic.md As of November 4, 2026, the latest Claude model on the AsOf record is Claude Haiku 5.5, released on October 7, 2026 by Anthropic, from a primary source (support.claude.com). The newest in each other line: Claude Sonnet 5.5 (September 28, 2026), Claude Opus 5.5 (September 22, 2026), Claude Mythos 5.1 (September 1, 2026), Claude Fable 5.1 (September 1, 2026), Claude 2.1 (November 21, 2023) and Claude Instant 1.2 (August 9, 2023). The record holds 32 Claude models, 32 with a checked release date. Source: https://support.claude.com/en/articles/12138966-release-notes · claim: /claim/clm_884128376B64.md · model: /record/claude-haiku-5-5.md ## Haiku Oldest first. A model's own record holds each date with its source. - [Claude 3 Haiku](/record/claude-3-haiku.md): released 2024-03-13; deprecated 2026-02-19; retired 2026-04-20 · source: https://www.anthropic.com/news/claude-3-haiku - [Claude 3.5 Haiku](/record/claude-3-5-haiku.md): released 2024-11-04; replaced by Claude Haiku 4.5; deprecated 2025-12-19; retired 2026-02-19 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Haiku 4.5](/record/claude-haiku-4-5.md): released 2025-10-15; replaced Claude 3.5 Haiku · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Haiku 5.5](/record/claude-haiku-5-5.md): released 2026-10-07 · source: https://support.claude.com/en/articles/12138966-release-notes ## Sonnet Oldest first. A model's own record holds each date with its source. - [Claude 3 Sonnet](/record/claude-3-sonnet.md): released 2024-03-04; deprecated 2025-01-21; retired 2025-07-21 · source: https://www.anthropic.com/news/claude-3-family - [Claude 3.5 Sonnet](/record/claude-3-5-sonnet.md): released 2024-06-20; replaced by Claude 3.5 Sonnet (upgraded); deprecated 2025-08-13; retired 2025-10-28 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude 3.5 Sonnet (upgraded)](/record/claude-3-5-sonnet-v2.md): released 2024-10-22; replaced Claude 3.5 Sonnet; deprecated 2025-08-13; retired 2025-10-28 · source: https://www.anthropic.com/news/3-5-models-and-computer-use - [Claude 3.7 Sonnet](/record/claude-3-7-sonnet.md): released 2025-02-24; replaced by Claude Sonnet 4; deprecated 2025-10-28; retired 2026-02-19 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Sonnet 4](/record/claude-sonnet-4.md): released 2025-05-22; replaced Claude 3.7 Sonnet; deprecated 2026-04-14; retired 2026-06-15 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Sonnet 4.5](/record/claude-sonnet-4-5.md): released 2025-09-29; replaced by Claude Sonnet 4.6; deprecated 2026-09-30 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Sonnet 4.6](/record/claude-sonnet-4-6.md): released 2026-02-17; replaced Claude Sonnet 4.5; replaced by Claude Sonnet 5 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Sonnet 5](/record/claude-sonnet-5.md): released 2026-06-30; replaced Claude Sonnet 4.6; replaced by Claude Sonnet 5.5 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Sonnet 5.5](/record/claude-sonnet-5-5.md): released 2026-09-28; replaced Claude Sonnet 5 · source: https://platform.claude.com/docs/en/release-notes/overview ## Opus Oldest first. A model's own record holds each date with its source. - [Claude 3 Opus](/record/claude-3-opus.md): released 2024-03-04; deprecated 2025-06-30; retired 2026-01-05 · source: https://www.anthropic.com/news/claude-3-family - [Claude Opus 4](/record/claude-opus-4.md): released 2025-05-22; replaced by Claude Opus 4.1; deprecated 2026-04-14; retired 2026-06-15 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Opus 4.1](/record/claude-opus-4-1.md): released 2025-08-05; replaced Claude Opus 4; deprecated 2026-06-05; retired 2026-08-05 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Opus 4.5](/record/claude-opus-4-5.md): released 2025-11-24; replaced by Claude Opus 4.6 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Opus 4.6](/record/claude-opus-4-6.md): released 2026-02-05; replaced Claude Opus 4.5; replaced by Claude Opus 4.7 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Opus 4.7](/record/claude-opus-4-7.md): released 2026-04-16; replaced Claude Opus 4.6; replaced by Claude Opus 4.8 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Opus 4.8](/record/claude-opus-4-8.md): released 2026-05-28; replaced Claude Opus 4.7; replaced by Claude Opus 5 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Opus 5](/record/claude-opus-5.md): released 2026-07-24; replaced Claude Opus 4.8 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Opus 5.5](/record/claude-opus-5-5.md): released 2026-09-22 · source: https://platform.claude.com/docs/en/release-notes/overview ## Mythos Oldest first. A model's own record holds each date with its source. - [Claude Mythos Preview](/record/claude-mythos-preview.md): released 2026-04-07; replaced by Claude Mythos 5; deprecated 2026-06-09 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Mythos 5](/record/claude-mythos-5.md): released 2026-06-09; replaced Claude Mythos Preview · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Mythos 5.1](/record/claude-mythos-5-1.md): released 2026-09-01 · source: https://platform.claude.com/docs/en/release-notes/overview ## Fable Oldest first. A model's own record holds each date with its source. - [Claude Fable 5](/record/claude-fable-5.md): released 2026-06-09; replaced by Claude Fable 5.1 · source: https://platform.claude.com/docs/en/release-notes/overview - [Claude Fable 5.1](/record/claude-fable-5-1.md): released 2026-09-01; replaced Claude Fable 5 · source: https://platform.claude.com/docs/en/release-notes/overview ## Claude Oldest first. A model's own record holds each date with its source. - [Claude 1](/record/claude-1.md): released 2023-03-14; deprecated 2024-09-04; retired 2024-11-06 · source: https://www.anthropic.com/news/introducing-claude - [Claude 2](/record/claude-2.md): released 2023-07-11; replaced by Claude 2.1; deprecated 2025-01-21; retired 2025-07-21 · source: https://www.anthropic.com/news/claude-2 - [Claude 2.1](/record/claude-2-1.md): released 2023-11-21; replaced Claude 2; deprecated 2025-01-21; retired 2025-07-21 · source: https://www.anthropic.com/news/claude-2-1 ## Instant Oldest first. A model's own record holds each date with its source. - [Claude Instant](/record/claude-instant.md): released 2023-03-14; deprecated 2024-09-04; retired 2024-11-06 · source: https://www.anthropic.com/news/introducing-claude - [Claude Instant 1.2](/record/claude-instant-1-2.md): released 2023-08-09; deprecated 2024-09-04; retired 2024-11-06 · source: https://www.anthropic.com/news/releasing-claude-instant-1-2 ## Get this data - JSON: /v1/models/claude - MCP: entity_state(entity: "") for one model; timeline(entity: "", predicates: ["model_release", "predecessor", "deprecated", "retired"]) for its rows - Every family: /models.md --- AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.