Anthropic's Claude 4 Sonnet with the ability to show its thinking process step by step.
Added Feb 24, 2025
Context Window
1.0M
Max Output
64.0K
Input Price (Auto)
$3.00/1M
Output Price (Auto)
$15.00/1M
Cache Read (Auto)
$0.30/1M
Capabilities
Benchmarks
Benchmarks
Performance metrics and benchmarks
Sourced from Artificial Analysis.
Intelligence Index
18.9
Coding Index
37.6
Agentic work
T²-Bench Telecom (legacy)
Legacy fallback · Conversational AI agents in dual-control scenarios
64.6%
Better than 59% of models compared
GDPval-AA v2
Economically valuable tasks (Elo)
819 Elo
Better than 37% of models compared
Document reasoning
AA-LCR v1.1
Long context reasoning with updated grading
70.3%
Better than 68% of models compared
Reasoning
HLE
Humanity's Last Exam
10.7%
Better than 55% of models compared
IFBench
Instruction-following benchmark
54.7%
Better than 66% 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
65.5%
Better than 73% of models compared
Math
AIME 2025
American Invitational Mathematics Examination 2025
74.3%
Better than 70% of models compared
AIME
American Invitational Mathematics Examination
77.3%
Better than 87% of models compared
Math-500
Diverse mathematical problem solving benchmark
99.1%
Better than 98% of models compared
Knowledge
MMLU-Pro
Professional and academic subject knowledge
84.2%
Better than 88% of models compared
Legacy benchmarks
GPQA Diamond (legacy)
Graduate-level scientific reasoning
77.7%
Better than 62% of models compared
AA-LCR (unversioned / legacy)
Long context reasoning evaluation
70.3%
Better than 68% of models compared
Last updated Sep 11, 2026
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