Claude Opus 4.5 with visible thinking for tougher coding, agent, and research work—built to show its reasoning while tackling long, complex tasks.
Added Nov 1, 2025
Context Window
200.0K
Max Output
64.0K
Avg output tokens (7d)
1.0K tokens
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
29.1
Agentic work
T²-Bench Telecom (legacy)
Legacy fallback · Conversational AI agents in dual-control scenarios
89.5%
Better than 84% of models compared
Document reasoning
AA-LCR v1.1
Long context reasoning with updated grading
77.3%
Better than 81% of models compared
Reasoning
HLE
Humanity's Last Exam
30.1%
Better than 82% of models compared
IFBench
Instruction-following benchmark
58.0%
Better than 70% of models compared
Coding
Terminal-Bench Hard (legacy)
Legacy fallback · Agentic coding and terminal use
47.0%
Better than 94% of models compared
LiveCodeBench
Contamination-free coding benchmark
87.1%
Better than 98% of models compared
Math
AIME 2025
American Invitational Mathematics Examination 2025
91.3%
Better than 93% of models compared
Knowledge
MMLU-Pro
Professional and academic subject knowledge
89.5%
Better than 99% of models compared
Legacy benchmarks
GPQA Diamond (legacy)
Graduate-level scientific reasoning
86.6%
Better than 81% of models compared
AA-LCR (unversioned / legacy)
Long context reasoning evaluation
77.3%
Better than 81% of models compared
Last updated Sep 11, 2026
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