tokevenClaudevsGPT
Claude Fable 5.1 vs o4 Mini
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Fable 5.1
Flagshipo4 Mini
Fast / BudgetInput $/MTok
$10.00
$1.10
Output $/MTok
$50.00
$4.40
Cache discount
98% off
75% off
Context
1,000K
200K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
0
vs
0
Code Review
0
vs
0
Summarization
0
vs
0
Q&A
0
vs
0
Extraction
0
vs
0
Reasoning
0
vs
0
Classification
0
vs
0
Creative Writing
0
vs
0
Claude Fable 5.1
o4 Mini
Guidance
When to use Claude Fable 5.1 vs o4 Mini
Choose Claude Fable 5.1 when...
- -You need a larger context window (1,000K vs 200K)
- Similar performance; consider provider preference or ecosystem fit.
Choose o4 Mini when...
- -Cost matters: 89% cheaper on input tokens
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Fable 5.1
o4 Mini
100K tokens
$2.20
$0.21Cheaper
1M tokens
$22.00
$2.09Cheaper
10M tokens
$220.00
$20.90Cheaper
FAQ
When should I use Claude Fable 5.1 instead of o4 Mini?
Claude Fable 5.1 and o4 Mini perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is o4 Mini cheaper than Claude Fable 5.1?
Yes. o4 Mini input costs $1.10/MTok vs $10.00/MTok for Claude Fable 5.1, saving 89% on input.
What are the context window sizes for Claude Fable 5.1 and o4 Mini?
Claude Fable 5.1 has a 1,000K token context window. o4 Mini has a 200K token context window.
Go deeper on either model
Per-call cost calculators, provider lineups, and price history for both models on this page.
Other comparisons
How Claude Fable 5.1 and o4 Mini stack up against the rest of the field.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.