Claude Opus 4.5
The best model in the world for coding, agents, and computer use.
A Claude model release from Anthropic positioned for coding, agentic work, and computer use.
Pricing
Official site · Nov 5, 2026, 7:18 AM
Input / 1M
$5.00
Output / 1M
$25.00
Cached input / 1M
$0.50
Cache hits and refreshes: $0.50/MTok. 5-minute cache writes: $6.25/MTok; 1-hour cache writes: $10/MTok.
Anthropic's official pricing documentation lists Claude Opus 4.5 at $5 per million base input tokens and $25 per million output tokens. Prompt-cache pricing is also explicitly listed.
Model Intelligence
Context window
200,000 tokens
Arena ranking
35
Benchmarkable
Yes
Model level
release
MMLU Pro
0.89
GPQA
0.81
HLE
0.13
LiveCodeBench
0.74
AIME 2025
0.63
IFBench
0.43
LCR
0.71
TerminalBench Hard
0.41
TAU2
0.86
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