tokevenClaudevsGemini
Claude Fable 5 vs Gemini 3.1 Pro
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Claude Fable 5
FlagshipGemini 3.1 Pro
Mid-tierInput $/MTok
$10.00
$2.00
Output $/MTok
$50.00
$12.00
Cache discount
90% off
90% off
Context
1M
1.0M
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
72
vs
57
Code Review
95
vs
84
Summarization
77
vs
80
Q&A
88
vs
87
Extraction
75
vs
75
Reasoning
90
vs
84
Classification
82
vs
86
Creative Writing
72
vs
77
Claude Fable 5
Gemini 3.1 Pro
Guidance
When to use Claude Fable 5 vs Gemini 3.1 Pro
Choose Claude Fable 5 when...
- -You need strong code review (confidence 95 vs 84)
- -You need strong reasoning (confidence 90 vs 84)
- -You need strong q&a (confidence 88 vs 87)
- -You need strong code generation (confidence 72 vs 57)
Choose Gemini 3.1 Pro when...
- -You need strong classification (confidence 86 vs 82)
- -You need strong summarization (confidence 80 vs 77)
- -You need strong creative writing (confidence 77 vs 72)
- -Cost matters: 80% cheaper on input tokens
- -You need a larger context window (1.0M vs 1M)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Claude Fable 5
Gemini 3.1 Pro
100K tokens
$2.20
$0.50Cheaper
1M tokens
$22.00
$8.20Cheaper
10M tokens
$220.00
$82.00Cheaper
FAQ
When should I use Claude Fable 5 instead of Gemini 3.1 Pro?
Claude Fable 5 outperforms Gemini 3.1 Pro for Code Generation, Code Review, Q&A. It costs $10.00/$50.00 per million tokens (input/output).
Is Gemini 3.1 Pro cheaper than Claude Fable 5?
Yes. Gemini 3.1 Pro input costs $2.00/MTok vs $10.00/MTok for Claude Fable 5, saving 80% on input.
What are the context window sizes for Claude Fable 5 and Gemini 3.1 Pro?
Claude Fable 5 has a 1M token context window. Gemini 3.1 Pro has a 1.0M 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 and Gemini 3.1 Pro 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.