LLM WORLD

Claude 3.7 Sonnet

Anthropic · · 248 days after Claude 3.5 Sonnet

Verified

2 of 2 published values traced to a source2 primary sources, 3 archived1 not disclosed by the lab1 not researched yet

Why this status

Cited to the lab's own announcement. Not verified because the context window could not be found in any cited primary source — the value may be correct, but this dataset cannot yet show where it came from. Modalities read from Anthropic's model documentation as it stood on 2025-05-19, which lists this model as: “Claude 3.7 Sonnet Our most intelligent model Text and image input Text output 200k context window Extended thinking.” The current documentation no longer lists it, so the contemporaneous snapshot is cited rather than the live page. Capabilities evidenced from the primary sources: reasoning: “Extended thinking mode is available on all surfaces except the free Claude tier.” | vision: “5 Haiku Our fastest model Text and image input Text output 200k context window Claude 3.”.

What these states mean · How records are judged · Has this record changed?

The first hybrid reasoning model with a user-controlled extended thinking mode.

reasoningvisionmultimodallong-contextflagship

Details

ReleasedFebruary 24, 2025
stated in anthropic.com

Claude 3.7 Sonnet was released on February 24, 2025.

CompanyAnthropic
FamilyClaude
Lineageafter Claude 3.5 Sonnet · before Claude Sonnet 4.5
EraReasoning models
TypeLanguage model · LLM
ModalitiesText + Image → Text
CapabilitiesReasoning, Vision
WeightsProprietary
LicenceNot applicable — proprietary
Context window200K tokens
stated in docs.anthropic.com

Claude 3.7 Sonnet supports a context window of 200,000 tokens.

ParametersNot disclosed

Pricing

The price a lab's own page showed on the day that page was captured. That is what a snapshot can prove; it is not necessarily the launch price, and prices are often cut later. Citing the live pricing page instead would give a number with no date at all.

Input $3 per million tokens observed February 24, 2025 · archived snapshot (2025-02-24)
Output $15 per million tokens observed February 24, 2025 · archived snapshot (2025-02-24)

Current information, elsewhere

This record is a historical one: every figure above is traced to a dated primary source. For what is true today — live pricing, current rankings, availability — these are better maintained than anything here could be.

Sources

Record status: verified · confidence 90/100 · 2 of 3 primary

Cited to the lab's own announcement. Not verified because the context window could not be found in any cited primary source — the value may be correct, but this dataset cannot yet show where it came from. Modalities read from Anthropic's model documentation as it stood on 2025-05-19, which lists this model as: “Claude 3.7 Sonnet Our most intelligent model Text and image input Text output 200k context window Extended thinking.” The current documentation no longer lists it, so the contemporaneous snapshot is cited rather than the live page. Capabilities evidenced from the primary sources: reasoning: “Extended thinking mode is available on all surfaces except the free Claude tier.” | vision: “5 Haiku Our fastest model Text and image input Text output 200k context window Claude 3.”.

Primary means published by the organisation that made the model. Verified records require at least one.

Claude family

  1. Claude 1 March 14, 2023
  2. Claude 2 July 11, 2023
  3. Claude 3 Opus March 4, 2024
  4. Claude 3.5 Sonnet June 21, 2024
  5. Claude 3.7 Sonnet February 24, 2025
  6. Claude Opus 4 May 22, 2025
  7. Claude Sonnet 4.5 September 29, 2025
  8. Claude Haiku 4.5 October 15, 2025
  9. Claude Opus 4.5 November 24, 2025
  10. Claude Opus 4.6 February 5, 2026
  11. Claude Sonnet 4.6 February 17, 2026
  12. Claude Opus 4.7 April 16, 2026
  13. Claude Opus 4.8 May 28, 2026
  14. Claude Fable 5 June 9, 2026
  15. Claude Mythos 5 June 9, 2026
  16. Claude Sonnet 5 June 30, 2026
  17. Claude Opus 5 July 24, 2026
  18. Claude Fable 5.1 September 1, 2026
  19. Claude Mythos 5.1 September 1, 2026
  20. Claude Opus 5.5 September 22, 2026
  21. Claude Sonnet 5.5 September 28, 2026
  22. Claude Haiku 5.5 October 7, 2026

What changed from Claude 3.5 Sonnet

Compared with the previous release in this series. A field appears only when both records state a value — where one does not, it is listed as uncomparable rather than dropped, because a gap in our research is not a finding about the model.

Not comparable: Parameters (not disclosed for both releases)

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