Claude Sonnet 4.6 is Anthropic's most capable Sonnet yet — a full upgrade across coding, computer use, long-context reasoning, agent planning, and design. Supports up to a 1M-token context window at Sonnet pricing.
Added Feb 17, 2026
Context Window
1.0M
Max Output
128.0K
Input Price (Auto)
$2.99/1M
Output Price (Auto)
$14.99/1M
Cache Read (Auto)
$0.30/1M
Capabilities
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
44.4
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Coding Index
46.4
Agentic Index
61.6
GPQA Diamond
Graduate-level scientific reasoning
79.9%
Better than 80% of models compared
HLE
Humanity's Last Exam
13.2%
Better than 78% of models compared
IFBench
Instruction-following benchmark
41.2%
Better than 45% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
79.5%
Better than 74% of models compared
AA-LCR
Long context reasoning evaluation
57.7%
Better than 75% of models compared
GDPval-AA
Economically valuable tasks
54.6%
Better than 97% of models compared
CritPt
Research-level physics reasoning
0.9%
Better than 76% of models compared
SciCode
Python programming for scientific computing
46.9%
Better than 94% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
46.2%
Better than 95% of models compared
AA-Omniscience Accuracy
Proportion of correctly answered questions
38.0%
Better than 92% of models compared
AA-Omniscience Hallucination Rate
Rate of incorrect answers among non-correct responses
59.6%
Better than 84% of models compared
Last updated May 11, 2026
Artificial Analysis
