Claude Opus 4.5
by Anthropic
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal ca
Models
Claude Opus 4.5
Added 10 July 2026
Overview
Claude Opus 4.5 is Anthropic’s frontier reasoning model optimized for complex software engineering, agentic workflows, and long-horizon computer use. It offers strong multimodal capabilities, competitive performance across real-world coding and...
How to use / API access
Call via OpenRouter with model id `anthropic/claude-opus-4.5`.
- openrouter ·
anthropic/claude-opus-4.5Docs
OpenRouter id: anthropic/claude-opus-4.5
Benchmarks
- Design Arena 3d (other) : 1280 elo · #24
- Design Arena asciiart (other) : 1231 elo · #12
- Design Arena codecategories (other) : 1279 elo · #21
- Design Arena dataviz (other) : 1277 elo · #18
Notes
Claude Opus 4.5 is listed in the EDNA Models directory from the OpenRouter catalogue.
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