Anthropic: Claude Sonnet 4.6

Anthropic: Claude Sonnet 4.6

anthropic · Released Feb 17, 2026 Professional In-House Pick
Intelligence #10 / 557
84.9 Our Score
Speed #211 / 259
48.3 tokens / sec
Input #505 / 560
$3.00 per 1M tokens
Output #513 / 560
$15.00 per 1M tokens
Context #49 / 560
1M tokens

Analysis Summary

Anthropic: Claude Sonnet 4.6 sits in the Professional tier on our leaderboard, ranked #10 of 557 published models on overall intelligence. At $3.00 input and $15.00 output per 1M tokens, it is among the most expensive on the market. It offers an exceptionally large context window suited to long-document workflows and supports tool use, function calling, vision, and reasoning.

Editorial notes

Claude Sonnet 4.6 from Anthropic pairs excellent coding performance with a 1M token context, vision, and reliable tool use at a mid-tier price point for professional workflows.

Assessed May 14, 2026

Rankings consider pricing, capabilities, benchmarks, and real-world applicability and are refreshed as new models launch. Feedback?

Performance Profile

Intelligence7.2Technical8.4Value6.3Content7.5
Intelligence 7.2/10
Technical 8.4/10
Content 7.5/10
Value 6.3/10

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..

Capabilities

Tool Use Function Calling Vision

Performance Indices

Source: Artificial Analysis

44.4 Intelligence Index
46.4 Coding Index
62.9 Agentic Index

Benchmark Scores

Intelligence

GPQA Diamond 79.9% Graduate-level scientific reasoning
HLE 13.2% Humanity's Last Exam
SciCode 46.9% Scientific computing

Technical

TerminalBench Hard 46.2% Agentic terminal tasks
τ²-Bench 79.5% Conversational agent benchmark

Content

IFBench 41.2% Instruction following
LCR 57.7% Long-context reasoning

Benchmark data from Artificial Analysis and Hugging Face

How does Anthropic: Claude Sonnet 4.6 stack up?

Compare side-by-side with other professional models.

Compare Models

Model Information

OpenRouter ID anthropic/claude-sonnet-4.6
Provideranthropic
Release Date February 17, 2026
Context Length1,000,000 tokens
Max Completion128,000 tokens
Status Active

Pricing

Token Type Cost per 1M tokens Cost per 1K tokens
Input $3.00 $0.003000
Output $15.00 $0.015000

Live Performance

Live endpoint metrics — refreshed every 30 minutes.

100%
Avg Uptime
1,120ms
Best Latency (TTFT)
49 tok/s
Best Throughput
7/8
Active Endpoints
Available via: Amazon Bedrock, Anthropic, Google, Azure