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Claude Opus 4

by Anthropic

Claude Opus 4 is benchmarked as the world’s best coding model, at time of release, bringing sustained performance on complex, long-running tasks and agent workflows. It sets new be

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Models

Claude Opus 4

Added 10 July 2026

#anthropic

Overview

Claude Opus 4 is benchmarked as the world’s best coding model, at time of release, bringing sustained performance on complex, long-running tasks and agent workflows. It sets new benchmarks in...

Best for

Best for
Hard reasoning, architecture reviews, and high-stakes agent plans

Use cases

  • architecture reviews
  • complex debugging
  • strategy memos
  • eval judges

How to use / API access

Call via OpenRouter with model id `anthropic/claude-opus-4`.

  • openrouter · anthropic/claude-opus-4 Docs

OpenRouter id: anthropic/claude-opus-4

Benchmarks

  • Design Arena 3d (other) : 1214 elo · #41
  • Design Arena codecategories (other) : 1204 elo · #52
  • Design Arena dataviz (other) : 1187 elo · #55
  • Design Arena gamedev (other) : 1236 elo · #37

Enterprise DNA angle

Use Opus where judgment matters; Omni routes cheaper models for bulk work and reserves Opus for the hard steps.

Notes

Claude Opus 4 is listed in the EDNA Models directory from the OpenRouter catalogue.

Pros

  • Top-tier reasoning for hard planning and analysis
  • Strong coding on complex multi-step tasks
  • Vision support for screenshots and docs

Cons

  • Higher $/Mtoken than Sonnet or open models
  • Overkill for simple classification or extraction
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