Claude 4.5 Opus

Claude Opus 4.5 is the top model for coding, agentic workflows, and computer use—now stronger at deep research, slides, and spreadsheets. It pushes state-of-the-art software engineering and lifts vision, reasoning, and math across the board.

Reasoning
Vision
Native PDF input
Tool Calling
Structured Output

Added Nov 1, 2025

Pricing

Auto routing · per 1M tokens

Input: $5.00
Output: $25.00
Cache read: $0.50

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Specifications

Context window: 200K
Max output: 64K
Avg output (7d): 535 tokens; Longer than 47% of models

Benchmarks

Artificial Analysis

LMArena

Vectara

Design Arena

Sourced from Artificial Analysis.

Intelligence Index

23.7

Better than 75% of models compared

Agentic work

T²-Bench Telecom (legacy)

Legacy fallback · Conversational AI agents in dual-control scenarios

86.3%

Better than 79% of models compared

Document reasoning

AA-LCR v1.1

Long context reasoning with updated grading

70.7%

Better than 64% of models compared

Reasoning

HLE

Humanity's Last Exam

13.2%

Better than 58% of models compared

IFBench

Instruction-following benchmark

43.0%

Better than 46% of models compared

Coding

Terminal-Bench Hard (legacy)

Legacy fallback · Agentic coding and terminal use

40.9%

Better than 87% of models compared

LiveCodeBench

Contamination-free coding benchmark

73.8%

Better than 85% of models compared

Math

AIME 2025

American Invitational Mathematics Examination 2025

62.7%

Better than 58% of models compared

Knowledge

MMLU-Pro

Professional and academic subject knowledge

88.9%

Better than 99% of models compared

Legacy benchmarks

GPQA Diamond (legacy)

Graduate-level scientific reasoning

81.0%

Better than 68% of models compared

AA-LCR (unversioned / legacy)

Long context reasoning evaluation

70.7%

Better than 63% of models compared

Last updated Oct 14, 2026