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Comparison

GPT 5.4 vs Claude Fable 5

Side-by-side comparison of OpenAI GPT 5.4 and Anthropic Claude Fable 5. Pricing, quality benchmarks, and context windows.

Quality Benchmarks

LiveBench / 0-100

Coding73 / 67Math94 / 94Reasoning90 / 93Language75 / 67

GPT 5.4

83.1Frontier

Claude Fable 5

80.3Frontier

GPT 5.4
Claude Fable 5

Input Price (per 1M)

$2.50
75% less
$10.00

Output Price (per 1M)

$15.00
70% less
$50.00

Context Window

1.1M
1.1x
1M

Max Output

128K
128K

OpenAI

GPT 5.4

vs

Anthropic

Claude Fable 5

Pricing per 1M Tokens

$2.50

75% cheaper

Input

Input

$10.00

Input

$15.00

70% cheaper

Output

Output

$50.00

Output

Token Limits

Context

1.1M

Context

Context

1M

Max Output

128K

Max Output

Max Output

128K

VisionTools
VisionTools

GPT 5.4 Details

$2.50 in / $15.00 out

Claude Fable 5 Details

$10.00 in / $50.00 out

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More Comparisons

Top OpenAI pick

GPT 5.5 vs Claude Fable 5

$5.00/M in · Score 83

Top Anthropic pick

GPT 5.4 vs Claude Opus 4.8

$5.00/M in · Score 81.8

OpenAI

GPT 5.2 Codex vs Claude Fable 5$1.75/MGPT 5.2 Chat vs Claude Fable 5$1.75/MGPT 5.2 vs Claude Fable 5$1.75/MGPT 5.3 Chat vs Claude Fable 5$1.75/M

Anthropic

GPT 5.4 vs Claude Opus 4.8 Fast$10.00/MGPT 5.4 vs Claude Opus 4.7$5.00/MGPT 5.4 vs Claude Opus 4.7 Fast$30.00/MGPT 5.4 vs Claude Opus 4.6$5.00/M

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