Claude Opus 4.6

anthropic/claude-4.6-opus-20260205

Claude Opus 4.6 is an Anthropic model released on 2026‑02‑05. It accepts text, image, and file inputs, produces text output, and supports tools and reasoning with a context length of 1,000,000 tokens. The model is not open‑weight and is priced at $5 per M input tokens and $25 per M output tokens.

  • tool use
  • structured outputs
  • reasoning

At a glance

provideranthropic
releasedFeb 5, 2026
context1M
input / M$5

Specifications

What the API gives you

Context window
1M tokens
Max output
128K tokens
Input price
$5 / 1M tokens
Output price
$25 / 1M tokens
Cache read
$0.50 / 1M tokens
Modalities
text, image, file → text
Knowledge cutoff
—
Released
Feb 5, 2026

Recommendation coverage

Where this model appears

  1. #1Best LLM for Chat & Roleplay
  2. #1Best LLM for Document Summarization
  3. #1Best LLM for Competition Math
  4. #1Best LLM for Literary Translation
  5. #1Best LLM for Translation
  6. #1Best LLM for Marketing Copy
  7. #1Best LLM for Writing
  8. #1Best LLM for Logic & Problem Solving
  9. #1Best LLM for Business Writing
  10. #2Best LLM for Everyday Translation
  11. #2Best LLM for Grounded RAG
  12. #2Best LLM for Massive Context
  13. #2Best LLM for RAG & Long Context
  14. #2Best LLM for Math & Reasoning
  15. #2Best LLM for a General Assistant
  16. #2Best LLM for Creative Writing
  17. #3Best LLM for Vision & Documents
  18. #3Best LLM for OCR & Documents
  19. #3Best LLM for Image Understanding
  20. #3Best LLM for Charts & Diagrams
  21. #3Best LLM for Document Parsing
  22. #4Best LLM for JSON & Schema Output
  23. #6Best LLM for Computer & Browser Use

Measured evidence

Public benchmark record

LMArena Agent
5.92026-07-13
LMArena Agent
6.72026-07-20
LMArena Text
1501 Elo2026-07-16
LMArena Text
1512 Elo2026-07-20
LMArena Vision
1317 Elo2026-07-12
LMArena WebDev
1542 Elo2026-07-16
LMArena WebDev
1543 Elo2026-07-20

LMArena data licensed CC-BY-4.0. Aider (Apache-2.0) and SWE-bench (MIT) are open.

Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.