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Claude 3 Opus

Anthropic · · 237 days after Claude 2

Verified

2 of 2 published values traced to a source1 primary source, 1 archived1 not disclosed by the lab1 not researched yet

Why this status

Every value this record asserts — date (Mar 4, 2024) and context window (200K) — was found in an archived primary source, checked 2026-08-10. Parameter count is not recorded, so nothing is claimed about it. Capabilities evidenced from the primary sources: vision: “Strong vision capabilities The Claude 3 models have sophisticated vision capabilities on par with other leading models.” | structured_output: “In addition, the Claude 3 models are better at producing popular structured output in formats like JSON—making it simpler to instruct Claude for use cases like natural la”.

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

Anthropic's first vision-capable flagship that topped GPT-4 across most benchmarks.

visionstructured outputmultimodallong-contextflagship

Details

ReleasedMarch 4, 2024
stated in anthropic.com

Claude 3 Opus was released on March 4, 2024.

CompanyAnthropic
FamilyClaude
Lineagebefore Claude Opus 4
EraMultimodal & open weights
TypeLanguage model · LLM
ModalitiesText + Image → Text
CapabilitiesVision, Structured output
WeightsProprietary
LicenceNot applicable — proprietary
Context window200K tokens
stated in anthropic.com

Claude 3 Opus supports a context window of 200,000 tokens.

ParametersNot disclosed

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 · 1 of 1 primary

Every value this record asserts — date (Mar 4, 2024) and context window (200K) — was found in an archived primary source, checked 2026-08-10. Parameter count is not recorded, so nothing is claimed about it. Capabilities evidenced from the primary sources: vision: “Strong vision capabilities The Claude 3 models have sophisticated vision capabilities on par with other leading models.” | structured_output: “In addition, the Claude 3 models are better at producing popular structured output in formats like JSON—making it simpler to instruct Claude for use cases like natural la”.

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

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