LLM WORLD

Claude Opus 4

Anthropic · · 87 days after Claude 3.7 Sonnet

Verified

2 of 2 published values traced to a source3 primary sources, 4 archived1 not disclosed by the lab1 not researched yet

Why this status

Modalities read from Anthropic's model documentation as it stood on 2025-05-26, which lists this model as: “Claude Opus 4 Our most powerful and capable model Text and image input Text output 200k context window Superior reasoning capabilities.” The current documentation no longer lists it, so the contemporaneous snapshot is cited rather than the live page. Capabilities evidenced from the primary sources: coding: “Introducing Claude 4 \ Anthropic Skip to main content Skip to footer Claude API Solutions Research Commitments Learn News Try Claude Announcements Introducing Claude 4 Ma” | agentic: “Claude Opus 4 is the world’s best coding model, with sustained performance on complex, long-running tasks and agent workflows.” | vision: “Claude Opus 4 Our most powerful and capable model Text and image input Text output 200k context window Superior reasoning capabilities Claude Sonnet 4 High-performance mo”.

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

Anthropic's agentic flagship with computer use and tight Claude Code integration.

agenticvisioncodingmultimodallong-contextflagship

Details

ReleasedMay 22, 2025
stated in anthropic.com

Claude Opus 4 was released on May 22, 2025.

CompanyAnthropic
FamilyClaude
Lineageafter Claude 3 Opus · before Claude Opus 4.5
EraReasoning models
TypeLanguage model · LLM
ModalitiesText + Image → Text
CapabilitiesAgentic, Vision, Coding
WeightsProprietary
LicenceNot applicable — proprietary
Context window200K tokens
stated in docs.anthropic.com

Claude Opus 4 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 $15 per million tokens observed November 19, 2025 · archived snapshot (2025-11-19)
Output $75 per million tokens observed November 19, 2025 · archived snapshot (2025-11-19)

Benchmarks

Each row is a dated claim by a named party, not a property of the model. A later revision adds a row rather than replacing one. This project publishes no composite or overall score.

BenchmarkScoreReported byDate
SWE-bench72.5 Vendor reportedMay 22, 2025
Terminal-Bench43.2 Vendor reportedMay 22, 2025

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 · 3 of 4 primary

Modalities read from Anthropic's model documentation as it stood on 2025-05-26, which lists this model as: “Claude Opus 4 Our most powerful and capable model Text and image input Text output 200k context window Superior reasoning capabilities.” The current documentation no longer lists it, so the contemporaneous snapshot is cited rather than the live page. Capabilities evidenced from the primary sources: coding: “Introducing Claude 4 \ Anthropic Skip to main content Skip to footer Claude API Solutions Research Commitments Learn News Try Claude Announcements Introducing Claude 4 Ma” | agentic: “Claude Opus 4 is the world’s best coding model, with sustained performance on complex, long-running tasks and agent workflows.” | vision: “Claude Opus 4 Our most powerful and capable model Text and image input Text output 200k context window Superior reasoning capabilities Claude Sonnet 4 High-performance mo”.

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 Opus

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)

Compare them side by side →

Browse models

Compare Claude Opus 4 with another model →
See Claude Opus 4 on the interactive timeline →