flagshipReleased 2026-02

Claude Sonnet 4.6

By Anthropic · Recommended production default.

Input / 1M

$3.00

Output / 1M

$15.00

Context

1M tokens

Max output

64K tokens

Claude Sonnet 4.6 pricing

Claude Sonnet 4.6 costs $3.00 per million input tokens and $15.00 per million output tokens at standard API rates, with cached input at $0.30/M. That makes it cheaper than 3 of 25 other tracked models on input.

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Claude Sonnet 4.6 benchmarks

SWE-bench Verified79.6%

OSWorld-Verified72.1%

MMLU-Pro85%

Arena Elo1470

Ranks #7 on SWE-bench Verified among tracked models.

Specs

Maker: Anthropic
Category: flagship
Released: 2026-02
Modalities: text, vision
Open weights: No (proprietary API)
Context window: 1M tokens
Max output: 64K tokens

Official API docs ↗

Compare Claude Sonnet 4.6 with

GPT-5.5

OpenAI · $5.00/$30.00 per 1M

GPT-5.4

OpenAI · $2.50/$15.00 per 1M

Claude Opus 4.8

Anthropic · $5.00/$25.00 per 1M

Gemini 3.1 Pro

Google · $2.00/$12.00 per 1M

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Data verified 2026-06-20. Prices are standard USD API rates per 1M tokens.