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Claude Sonnet 5

Name: Claude Sonnet 5
Author: Anthropic

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

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Models

Claude Sonnet 5

Added 10 July 2026

#anthropic

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-5 Docs

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 fullstack (other) : 1312 elo · #3
Design Arena webapps (other) : 1296 elo · #2
Design Arena 3d (other) : 1322 elo · #10
Design Arena asciiart (other) : 1230 elo · #13

Notes

Claude Sonnet 5 is listed in the EDNA Models directory from the OpenRouter catalogue.

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