tokevenClaudevsGPT
Claude Fable 5 vs GPT 5.4
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Fable 5
FlagshipGPT 5.4
Mid-tierInput $/MTok
$10.00
$2.50
Output $/MTok
$50.00
$15.00
Cache discount
90% off
90% off
Context
1,000K
128K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
96
vs
84
Code Review
95
vs
82
Summarization
90
vs
91
Q&A
88
vs
91
Extraction
85
vs
89
Reasoning
98
vs
80
Classification
82
vs
88
Creative Writing
95
vs
78
Claude Fable 5
GPT 5.4
Guidance
When to use Claude Fable 5 vs GPT 5.4
Choose Claude Fable 5 when...
- -You need strong reasoning (confidence 98 vs 80)
- -You need strong code generation (confidence 96 vs 84)
- -You need strong code review (confidence 95 vs 82)
- -You need strong creative writing (confidence 95 vs 78)
- -You need a larger context window (1,000K vs 128K)
Choose GPT 5.4 when...
- -You need strong summarization (confidence 91 vs 90)
- -You need strong q&a (confidence 91 vs 88)
- -You need strong extraction (confidence 89 vs 85)
- -You need strong classification (confidence 88 vs 82)
- -Cost matters: 75% 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
100K tokens
$2.20
$0.63Cheaper
1M tokens
$22.00
$6.25Cheaper
10M tokens
$220.00
$62.50Cheaper
FAQ
When should I use Claude Fable 5 instead of GPT 5.4?
Claude Fable 5 outperforms GPT 5.4 for Reasoning, Code Generation, Code Review. It costs $10.00/$50.00 per million tokens (input/output).
Is GPT 5.4 cheaper than Claude Fable 5?
Yes. GPT 5.4 input costs $2.50/MTok vs $10.00/MTok for Claude Fable 5, saving 75% on input.
What are the context window sizes for Claude Fable 5 and GPT 5.4?
Claude Fable 5 has a 1,000K token context window. GPT 5.4 has a 128K token context window.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.