Claude Sonnet 5
by Anthropic
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reaso
Models
Claude Sonnet 5
Added 10 July 2026
Overview
Sonnet 5 is Anthropic's most capable Sonnet-class model, with frontier performance across coding, agents, and professional work. It supports adaptive thinking with selectable reasoning effort levels (low, medium, high, max,...
How to use / API access
Call via OpenRouter with model id `anthropic/claude-sonnet-5`.
- openrouter ·
anthropic/claude-sonnet-5Docs
OpenRouter id: anthropic/claude-sonnet-5
Benchmarks
- Intelligence Index (artificial-analysis) : 53.4 index
- Coding Index (artificial-analysis) : 71.5 index
- Agentic Index (artificial-analysis) : 46.7 index
- Design Arena agenticgamedev (other) : 1240 elo · #4
- Design Arena androidnative (other) : 1238 elo · #10
- Design Arena fullstack (other) : 1283 elo · #6
- Design Arena godotgamedev (other) : 1256 elo · #4
Notes
Claude Sonnet 5 is listed in the EDNA Models directory from the OpenRouter catalogue.
Get the free Developer’s Field Guide
A 27-page field guide to the AI coding workflow with Claude. Claude Code, MCP servers, the prompt patterns that work, and what to delegate. Free.
Enter your work email. We send it straight over, plus a few short notes worth knowing. Unsubscribe any time.