Claude Opus 4.6 with adaptive thinking (effort: medium).
Added Feb 5, 2026
Context Window
1.0M
Max Output
128.0K
Input Price (Auto)
$5.00/1M
Output Price (Auto)
$25.00/1M
Cache Read (Auto)
$0.50/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
44.9
Reasoning
GPQA Diamond
Graduate-level scientific reasoning
89.6%
Better than 91% of models compared
HLE
Humanity's Last Exam
39.9%
Better than 93% of models compared
IFBench
Instruction-following benchmark
53.1%
Better than 63% of models compared
T²-Bench Telecom
Conversational AI agents in dual-control scenarios
92.1%
Better than 87% of models compared
AA-LCR
Long context reasoning evaluation
74.3%
Better than 89% of models compared
CritPt
Research-level physics reasoning
12.6%
Coding
SciCode
Python programming for scientific computing
51.9%
Better than 93% of models compared
Terminal-Bench Hard
Agentic coding and terminal use
46.2%
Better than 93% of models compared
Knowledge
AA-Omniscience Accuracy
Proportion of correctly answered questions
47.0%
AA-Omniscience Hallucination Rate
Rate of incorrect answers among non-correct responses
62.8%
Last updated Aug 16, 2026
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