Claude Opus 4.5

Name: Claude Opus 4.5
Price: 5 USD
Author: Anthropic

Anthropic🇺🇸 United States

active

Anthropic's most capable Claude 4.5 model.

Context window200K tokens

Input / 1M tokens$5

Output / 1M tokens$25

Version History

claude-opus-4-5October 15, 2025

Claude Opus 4.5 — improved agentic coding and reasoning.

87.5%

AIME 2024

89.0%

AIME 2025

94.8%

DocVQA

87.0%

GPQA

10.9%

Hallucination (Summarization)

75.4%

Hallucination Rate

73.8%

LiveCodeBench

93.8%

MATH

89.8%

MMLU

83.2%

MMLU-Pro

80.7%

MMMU

63.0 tokens_per_sec

Speed (tok/s)

80.9%

SWE-bench Verified