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Comparison

Claude Opus 4.6 Fast vs GPT 5.4

Side-by-side comparison of Anthropic Claude Opus 4.6 Fast and OpenAI GPT 5.4. Pricing, quality benchmarks, and context windows.

Quality Benchmarks

LiveBench / 0-100

Coding68 / 73Math89 / 94Reasoning87 / 90Language70 / 75

Claude Opus 4.6 Fast

78.7Frontier

GPT 5.4

83.1Frontier

Claude Opus 4.6 Fast
GPT 5.4

Input Price (per 1M)

$30.00
$2.50
92% less

Output Price (per 1M)

$150.00
$15.00
90% less

Context Window

1M
1.1M
1.1x

Max Output

128K
128K

Anthropic

Claude Opus 4.6 Fast

vs

OpenAI

GPT 5.4

Pricing per 1M Tokens

$30.00

Input

Input

$2.50

92% cheaper

Input

$150.00

Output

Output

$15.00

90% cheaper

Output

Token Limits

Context

1M

Context

Context

1.1M

Max Output

128K

Max Output

Max Output

128K

VisionTools
VisionTools

Claude Opus 4.6 Fast Details

$30.00 in / $150.00 out

GPT 5.4 Details

$2.50 in / $15.00 out

Compare Models

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Anthropic

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OpenAI

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