Claude Sonnet 4.6

Anthropic· released 17 Feb 2026

anthropic/claude-sonnet-4.6

Input / 1M tokens: $3
Output / 1M tokens: $15

Context window1M tokens

Longest answer: 128K tokens

reads textreads imagereads filetool callingvisionreasoning

About

Sonnet 4.6 is Anthropic's most capable Sonnet-class model yet, with frontier performance across coding, agents, and professional work. It excels at iterative development, complex codebase navigation, end-to-end project management with...

Details

Lab: Anthropicopenrouter.ai · 3 Oct 2026
Context: 1,000Kopenrouter.ai · 3 Oct 2026
Input price: $3 / 1Mopenrouter.ai · 3 Oct 2026
Output price: $15 / 1Mopenrouter.ai · 3 Oct 2026
Max output: 128,000 tokensopenrouter.ai · 3 Oct 2026
Inputs: text, image, fileopenrouter.ai · 3 Oct 2026
Open weights: Noopenrouter.ai · 3 Oct 2026

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Sources

openrouter.ai/anthropic/claude-sonnet-4.6· checked 3 Oct 2026