ClaudevsGPT

Claude Fable 5 vs GPT 5.4 Mini

Side-by-side comparison of pricing, task quality, and projected cost at higher scale.

Pricing

Side-by-side pricing

Claude Fable 5

Flagship

GPT 5.4 Mini

Fast / Budget
Input $/MTok
$10.00
$0.75
Output $/MTok
$50.00
$4.50
Cache discount
90% off
90% off
Context
1,000K
272K

Quality

Task confidence comparison

Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
96
vs
0
Code Review
95
vs
0
Summarization
90
vs
0
Q&A
88
vs
0
Extraction
85
vs
0
Reasoning
98
vs
0
Classification
82
vs
0
Creative Writing
95
vs
0
Claude Fable 5
GPT 5.4 Mini

Guidance

When to use Claude Fable 5 vs GPT 5.4 Mini

Choose Claude Fable 5 when...

  • -You need a larger context window (1,000K vs 272K)
  • Similar performance; consider provider preference or ecosystem fit.

Choose GPT 5.4 Mini when...

  • -Cost matters: 93% cheaper on input tokens

At scale

Cost at scale

Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Fable 5
GPT 5.4 Mini
100K tokens
$2.20
$0.19Cheaper
1M tokens
$22.00
$1.87Cheaper
10M tokens
$220.00
$18.75Cheaper

FAQ

When should I use Claude Fable 5 instead of GPT 5.4 Mini?

Claude Fable 5 and GPT 5.4 Mini perform similarly across all tracked tasks. Pick based on pricing and provider preference.

Is GPT 5.4 Mini cheaper than Claude Fable 5?

Yes. GPT 5.4 Mini input costs $0.75/MTok vs $10.00/MTok for Claude Fable 5, saving 93% on input.

What are the context window sizes for Claude Fable 5 and GPT 5.4 Mini?

Claude Fable 5 has a 1,000K token context window. GPT 5.4 Mini has a 272K token context window.

Track your real costs

Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.