# Claude default model entity: /record/claude.md predicate: default_model page: /record/claude/default_model as_of: 2026-11-04 As of November 4, 2026, Claude's default model on the AsOf record is Claude Sonnet 5, dated June 30, 2026, from a primary source (anthropic.com). The record holds 9 claims on Claude's default model, 1 still open and 8 superseded, each dated and sourced; a replaced value is closed with an end date, never deleted. ## Current default model What the record asserts on 2026-11-04. - [Claude](/record/claude.md) | default_model | [Claude Sonnet 5](/record/claude-sonnet-5.md) | valid 2026-06-30 to present | conf 0.95 | valid | [clm_0DC1F7EBBD47](/claim/clm_0DC1F7EBBD47.md) sources: https://www.anthropic.com/news/claude-sonnet-5 ## Every dated value One claim per line, oldest first. Superseded claims stay visible. - [Claude](/record/claude.md) | default_model | [Claude 2](/record/claude-2.md) | valid 2023-07-11 to 2023-11-21 | conf 0.95 | superseded | superseded_by [clm_BA7B44818BA4](/claim/clm_BA7B44818BA4.md) | [clm_4DE505E72B96](/claim/clm_4DE505E72B96.md) sources: https://www.anthropic.com/news/claude-2-1, https://www.anthropic.com/news/claude-2 - [Claude](/record/claude.md) | default_model | [Claude 2.1](/record/claude-2-1.md) | valid 2023-11-21 to 2024-03-04 | conf 0.95 | superseded | superseded_by [clm_F56FF5CB2BA0](/claim/clm_F56FF5CB2BA0.md) | [clm_BA7B44818BA4](/claim/clm_BA7B44818BA4.md) sources: https://www.anthropic.com/news/claude-2-1, https://www.anthropic.com/news/claude-3-family - [Claude](/record/claude.md) | default_model | [Claude 3 Sonnet](/record/claude-3-sonnet.md) | valid 2024-03-04 to 2024-06-21 | conf 0.95 | superseded | superseded_by [clm_E63FB2BBEB63](/claim/clm_E63FB2BBEB63.md) | [clm_F56FF5CB2BA0](/claim/clm_F56FF5CB2BA0.md) sources: https://www.anthropic.com/news/claude-3-family, https://www.anthropic.com/news/claude-3-5-sonnet - [Claude](/record/claude.md) | default_model | [Claude 3.5 Sonnet](/record/claude-3-5-sonnet.md) | valid 2024-06-21 to 2024-10-22 | conf 0.95 | superseded | superseded_by [clm_069E68E67AD4](/claim/clm_069E68E67AD4.md) | [clm_E63FB2BBEB63](/claim/clm_E63FB2BBEB63.md) sources: https://www.anthropic.com/news/3-5-models-and-computer-use, https://www.anthropic.com/news/claude-3-5-sonnet - [Claude](/record/claude.md) | default_model | [Claude 3.5 Sonnet (upgraded)](/record/claude-3-5-sonnet-v2.md) | valid 2024-10-22 to 2025-02-24 | conf 0.95 | superseded | superseded_by [clm_328D98B8AB9E](/claim/clm_328D98B8AB9E.md) | [clm_069E68E67AD4](/claim/clm_069E68E67AD4.md) sources: https://www.anthropic.com/news/3-5-models-and-computer-use, https://www.anthropic.com/news/claude-3-7-sonnet - [Claude](/record/claude.md) | default_model | [Claude 3.7 Sonnet](/record/claude-3-7-sonnet.md) | valid 2025-02-24 to 2025-05-22 | conf 0.95 | superseded | superseded_by [clm_E6D59A90B884](/claim/clm_E6D59A90B884.md) | [clm_328D98B8AB9E](/claim/clm_328D98B8AB9E.md) sources: https://www.anthropic.com/news/claude-4, https://www.anthropic.com/news/claude-3-7-sonnet - [Claude](/record/claude.md) | default_model | [Claude Sonnet 4](/record/claude-sonnet-4.md) | valid 2025-05-22 to 2025-09-29 | conf 0.95 | superseded | superseded_by [clm_50F23B443136](/claim/clm_50F23B443136.md) | [clm_E6D59A90B884](/claim/clm_E6D59A90B884.md) sources: https://www.anthropic.com/news/claude-4, https://support.claude.com/en/articles/12138966-release-notes - [Claude](/record/claude.md) | default_model | [Claude Sonnet 4.6](/record/claude-sonnet-4-6.md) | valid 2026-02-17 to 2026-06-30 | conf 0.95 | superseded | superseded_by [clm_0DC1F7EBBD47](/claim/clm_0DC1F7EBBD47.md) | [clm_50F23B443136](/claim/clm_50F23B443136.md) sources: https://www.anthropic.com/news/claude-sonnet-5, https://www.anthropic.com/news/claude-sonnet-4-6 - [Claude](/record/claude.md) | default_model | [Claude Sonnet 5](/record/claude-sonnet-5.md) | valid 2026-06-30 to present | conf 0.95 | valid | [clm_0DC1F7EBBD47](/claim/clm_0DC1F7EBBD47.md) sources: https://www.anthropic.com/news/claude-sonnet-5 ## What replaced what - Claude 2 (2023-07-11 to 2023-11-21, [clm_4DE505E72B96](/claim/clm_4DE505E72B96.md)) was replaced by Claude 2.1 from 2023-11-21 ([clm_BA7B44818BA4](/claim/clm_BA7B44818BA4.md)) - Claude 2.1 (2023-11-21 to 2024-03-04, [clm_BA7B44818BA4](/claim/clm_BA7B44818BA4.md)) was replaced by Claude 3 Sonnet from 2024-03-04 ([clm_F56FF5CB2BA0](/claim/clm_F56FF5CB2BA0.md)) - Claude 3 Sonnet (2024-03-04 to 2024-06-21, [clm_F56FF5CB2BA0](/claim/clm_F56FF5CB2BA0.md)) was replaced by Claude 3.5 Sonnet from 2024-06-21 ([clm_E63FB2BBEB63](/claim/clm_E63FB2BBEB63.md)) - Claude 3.5 Sonnet (2024-06-21 to 2024-10-22, [clm_E63FB2BBEB63](/claim/clm_E63FB2BBEB63.md)) was replaced by Claude 3.5 Sonnet (upgraded) from 2024-10-22 ([clm_069E68E67AD4](/claim/clm_069E68E67AD4.md)) - Claude 3.5 Sonnet (upgraded) (2024-10-22 to 2025-02-24, [clm_069E68E67AD4](/claim/clm_069E68E67AD4.md)) was replaced by Claude 3.7 Sonnet from 2025-02-24 ([clm_328D98B8AB9E](/claim/clm_328D98B8AB9E.md)) - Claude 3.7 Sonnet (2025-02-24 to 2025-05-22, [clm_328D98B8AB9E](/claim/clm_328D98B8AB9E.md)) was replaced by Claude Sonnet 4 from 2025-05-22 ([clm_E6D59A90B884](/claim/clm_E6D59A90B884.md)) - Claude Sonnet 4 (2025-05-22 to 2025-09-29, [clm_E6D59A90B884](/claim/clm_E6D59A90B884.md)) was replaced by Claude Sonnet 4.6 from 2026-02-17 ([clm_50F23B443136](/claim/clm_50F23B443136.md)) - Claude Sonnet 4.6 (2026-02-17 to 2026-06-30, [clm_50F23B443136](/claim/clm_50F23B443136.md)) was replaced by Claude Sonnet 5 from 2026-06-30 ([clm_0DC1F7EBBD47](/claim/clm_0DC1F7EBBD47.md)) ## Questions this record answers ### What is Claude's current default model? Claude Sonnet 5, dated June 30, 2026, from a primary source (anthropic.com). The record asserts this claim as of November 4, 2026 (status valid, confidence 0.95). ### When did Claude's default model last change? The latest value on the record is Claude Sonnet 5, dated June 30, 2026; before it the record holds Claude Sonnet 4.6, dated February 17, 2026 and closed on June 30, 2026. ### What was Claude's default model before Claude Sonnet 5? Claude Sonnet 4.6, valid from February 17, 2026 to June 30, 2026 (status superseded), from a primary source (anthropic.com). ## Get this data - JSON: /v1/entities/claude/default_model (this fact) · /v1/entities/claude?predicates=default_model (with the entity's coverage; add as_of=YYYY-MM-DD for a date) - MCP: timeline(entity: "claude", predicates: ["default_model"]) for every dated value · fetch(id: "/record/claude/default_model.md") for this page - Entity twin: /record/claude.md · timeline: /timelines/claude.md --- AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.