Anthropic: Claude Sonnet 4.6

Anthropic: Claude Sonnet 4.6

anthropic · Released Feb 17, 2026 New
80
Our Score

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 memory, polished document creation, and confident computer use for web QA and workflow automation.

$3.00 / 1M Input Price
$15.00 / 1M Output Price
1M tokens Context Window
128,000 tokens Max Output

Capabilities

Tool Use Function Calling Vision

Architecture

ModalityText + Image → Text
TokenizerClaude

Performance Indices

Source: Artificial Analysis

42.6 Intelligence Index
43 Coding Index
60.7 Agentic Index

Benchmark Scores

Evaluations

GPQA Diamond 79.7%
Graduate-level scientific reasoning
HLE 10.8%
Humanity's Last Exam
SciCode 44.1%
Scientific computing
IFBench 42.4%
Instruction following
LCR 58.7%
Long-context reasoning
TerminalBench Hard 42.4%
Agentic terminal tasks
τ²-Bench 78.9%
Conversational agent benchmark

Benchmark data from Artificial Analysis and Hugging Face

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.

96.2%
Avg Uptime
983ms
Best Latency (TTFT)
44 tok/s
Best Throughput
4/4
Active Endpoints
Available via: Anthropic, Google, Amazon Bedrock

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