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 · Sep 26, 2026, 8:42 AM
Input / 1M
$5.00
Output / 1M
$25.00
Cached input / 1M
$0.50
Base input: $5/MTok; output: $25/MTok; 5-minute cache writes: $6.25/MTok; 1-hour cache writes: $10/MTok; cache hits and refreshes: $0.50/MTok. MTok means million tokens.
Anthropic's official pricing table explicitly lists Claude Opus 4.5 at $5 per million base input tokens and $25 per million output tokens. It also lists prompt-cache pricing of $6.25 per million 5-minute cache-write tokens, $10 per million 1-hour cache-write tokens, and $0.50 per million cache-hit/refresh tokens. Prices are in USD.
Model Intelligence
Context window
200,000 tokens
Arena ranking
24
Benchmarkable
Yes
Model level
release
Intelligence Index
23.7
Math Index
62.7
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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