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Comparison

Claude Opus 4.5 vs GPT 5.4

Side-by-side comparison of Anthropic Claude Opus 4.5 and OpenAI GPT 5.4. Pricing, quality benchmarks, and context windows.

Quality Benchmarks

LiveBench / 0-100

Coding70 / 73Math90 / 94Reasoning84 / 90Language68 / 75

Claude Opus 4.5

78.0Frontier

GPT 5.4

83.1Frontier

Claude Opus 4.5
GPT 5.4

Input Price (per 1M)

$5.00
$2.50
50% less

Output Price (per 1M)

$25.00
$15.00
40% less

Context Window

200K
1.1M
5.3x

Max Output

64K
128K
2.0x

Anthropic

Claude Opus 4.5

vs

OpenAI

GPT 5.4

Pricing per 1M Tokens

$5.00

Input

Input

$2.50

50% cheaper

Input

$25.00

Output

Output

$15.00

40% cheaper

Output

Token Limits

Context

200K

Context

Context

1.1M

Max Output

64K

Max Output

Max Output

128K

VisionTools
VisionTools

Claude Opus 4.5 Details

$5.00 in / $25.00 out

GPT 5.4 Details

$2.50 in / $15.00 out

Compare Models

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