Anthropic's Claude 4 Opus with the ability to show its thinking process step by step.
Added Jul 15, 2025
Context Window
200.0K
Max Output
32.0K
Input Price (Auto)
$15.00/1M
Output Price (Auto)
$75.00/1M
Cache Read (Auto)
$1.50/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
20.6
Agentic work
T²-Bench Telecom (legacy)
Legacy fallback · Conversational AI agents in dual-control scenarios
73.4%
Better than 65% of models compared
Document reasoning
AA-LCR v1.1
Long context reasoning with updated grading
69.3%
Better than 65% of models compared
Reasoning
HLE
Humanity's Last Exam
12.3%
Better than 61% of models compared
IFBench
Instruction-following benchmark
53.7%
Better than 64% of models compared
Coding
Terminal-Bench Hard (legacy)
Legacy fallback · Agentic coding and terminal use
31.1%
Better than 73% of models compared
LiveCodeBench
Contamination-free coding benchmark
63.6%
Better than 70% of models compared
Math
AIME 2025
American Invitational Mathematics Examination 2025
73.3%
Better than 68% of models compared
AIME
American Invitational Mathematics Examination
75.7%
Better than 85% of models compared
Math-500
Diverse mathematical problem solving benchmark
98.2%
Better than 93% of models compared
Knowledge
MMLU-Pro
Professional and academic subject knowledge
87.3%
Better than 97% of models compared
Legacy benchmarks
GPQA Diamond (legacy)
Graduate-level scientific reasoning
79.6%
Better than 66% of models compared
AA-LCR (unversioned / legacy)
Long context reasoning evaluation
69.3%
Better than 65% of models compared
Last updated Sep 11, 2026
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