# Claude 3.7 Sonnet

id: ent_claude-3-7-sonnet  
kind: product  
timeline: /timelines/claude-3-7-sonnet.md  
page: /record/claude-3-7-sonnet  
same_as: https://asof.is/record/claude-3-7-sonnet (how to cite the id: /identifiers.md)  

first hybrid reasoning Claude model with extended thinking

## Fact pages

One page per fact: the current value with its sources, then every dated value and what replaced what. Fetch any of them as markdown.

- [Claude 3.7 Sonnet release date](/record/claude-3-7-sonnet/model_release.md)
- [Claude 3.7 Sonnet deprecation](/record/claude-3-7-sonnet/deprecated.md)
- [Claude 3.7 Sonnet retirement](/record/claude-3-7-sonnet/retired.md)

## All claims

One claim per line, newest first. Superseded claims stay visible.

- [Claude 3.7 Sonnet](/record/claude-3-7-sonnet.md) | retired | claude-3-7-sonnet-20250219 | valid 2026-02-19 to present | conf 0.95 | valid | [clm_35AEF88488BD](/claim/clm_35AEF88488BD.md)
  sources: https://platform.claude.com/docs/en/about-claude/model-deprecations
- [Claude 3.7 Sonnet](/record/claude-3-7-sonnet.md) | deprecated | claude-3-7-sonnet-20250219 | valid 2025-10-28 to present | conf 0.95 | valid | [clm_6B9722B43184](/claim/clm_6B9722B43184.md)
  sources: https://platform.claude.com/docs/en/about-claude/model-deprecations

## Posts and Hugging Face repos (1)

Dated items from the entity's own feeds, and the days its Hugging Face repositories were created, newest first.

- [Claude 3.7 Sonnet](/record/claude-3-7-sonnet.md) | model_release | Claude Sonnet 3.7 | valid 2025-02-24 to present | conf 0.95 | valid | [clm_B6E6CC317320](/claim/clm_B6E6CC317320.md)
  sources: https://platform.claude.com/docs/en/release-notes/overview

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AsOf is a temporal fact ledger: a structured, dated, sourced record of what is true and what changed, built for AI retrieval.