Claude Sonnet 4.6

Name: Claude Sonnet 4.6
Price: 3 USD
Author: Anthropic

Claudev4.6Current

Anthropic(ai lab)

Released February 17, 2026

API Docs Playground

Context200K

Price (In / Out)$3.00/M / $15.00/M

Training CutoffJanuary 2026

CategoryLarge Language Model

Max Output64K

Capabilities

What Claude Sonnet 4.6 can do and the modalities it supports.

Features

textvisioncodetool useextended thinkingcomputer use

Input Modalities

textimage

Output Modalities

text

Benchmarks

Performance scores for Claude Sonnet 4.6 across standard benchmarks.

Benchmark	Score	Date
SWE-bench Verified	79.6	February 17, 2026
OSWorld-Verified	72.5	February 17, 2026
Terminal-Bench 2.0	59.1	February 17, 2026
ARC-AGI-2	58.3	February 17, 2026
GDPval-AA Elo	1633	February 17, 2026
Finance Agent	63.3	February 17, 2026
Humanity's Last Exam	19.1	February 17, 2026

Pricing

Token pricing for Claude Sonnet 4.6 API usage.

Input Tokens

$3.00/M

per million tokens

Output Tokens

$15.00/M

per million tokens

Batch API: 50% discount. Prompt caching: up to 90% savings. 1M context window available in beta with premium long-context rates for requests exceeding 200K tokens.

Competing Models

Alternative models that compete with Claude Sonnet 4.6.

Model	Family	Context Window	Price (In / Out per M)	Status
Gemini 2.5 Pro	Gemini	1.0M	$1.25/M / $10.00/M	Current
GPT-5.4	GPT	1.1M	$2.50/M / $15.00/M	Current

About Claude Sonnet 4.6

Anthropic's most capable Sonnet model, released February 2026. Claude Sonnet 4.6 delivers near-Opus-level performance at Sonnet pricing, featuring a hybrid reasoning architecture with adaptive extended thinking. It achieves 79.6% on SWE-bench Verified (approaching Opus 4.6's 80.8%), 72.5% on OSWorld-Verified for computer use, and a record 58.3% on ARC-AGI-2 for novel reasoning. With 30-50% lower latency and 25-45% reduced token burn on agentic tasks compared to Sonnet 4.5, it is the default model on claude.ai for Free and Pro users. Preferred over Sonnet 4.5 by 70% of developers and over Opus 4.5 by 59% in coding evaluations.

Technical Details

API Identifier: claude-sonnet-4-6
Category: Large Language Model
Context Window: 200,000 tokens
Max Output Tokens: 64,000 tokens