Claude Opus 4.8

Overview

Claude Opus 4.8 is Anthropic's most capable generally available model in the Opus family. It supports text, image, and file inputs with text output, with reasoning support and a 1M-token...

How to use / API access

Call via OpenRouter with model id `anthropic/claude-opus-4.8`.

• openrouter · anthropic/claude-opus-4.8 Docs

OpenRouter id: anthropic/claude-opus-4.8

Benchmarks

• Intelligence Index (artificial-analysis) : 55.7 index
• Coding Index (artificial-analysis) : 74.3 index
• Agentic Index (artificial-analysis) : 47.2 index
• Design Arena agenticgamedev (other) : 1264 elo · #2
• Design Arena agentichtmlslides (other) : 1227 elo · #4
• Design Arena agenticslides (other) : 1294 elo · #2
• Design Arena agenticslides(html) (other) : 1230 elo · #4

Notes

Claude Opus 4.8 is listed in the EDNA Models directory from the OpenRouter catalogue.