Claude Sonnet 4

Overview

Claude Sonnet 4 significantly enhances the capabilities of its predecessor, Sonnet 3.7, excelling in both coding and reasoning tasks with improved precision and controllability. Achieving state-of-the-art performance on SWE-bench (72.7%),...

Best for

Best for
Production coding agents and long-context document work that need vision

Use cases

• repo agents
• code review
• document Q&A
• multimodal support bots

How to use / API access

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

• openrouter · anthropic/claude-sonnet-4 Docs

OpenRouter id: anthropic/claude-sonnet-4

Benchmarks

• Intelligence Index (artificial-analysis) : 28.9 index
• Coding Index (artificial-analysis) : 37.6 index
• Agentic Index (artificial-analysis) : 16.6 index
• Design Arena 3d (other) : 1206 elo · #45
• Design Arena codecategories (other) : 1178 elo · #60
• Design Arena dataviz (other) : 1187 elo · #57
• Design Arena gamedev (other) : 1197 elo · #50

Enterprise DNA angle

Enterprise DNA runs Sonnet-class models inside Omni with secrets, jobs, and eval harnesses so coding agents ship without babysitting providers.

Notes

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