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
75% off
Context
1,000K
1,000K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
96
vs
86
Code Review
95
vs
84
Summarization
90
vs
87
Q&A
88
vs
87
Extraction
85
vs
85
Reasoning
98
vs
90
Classification
82
vs
86
Creative Writing
95
vs
84
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 reasoning (confidence 98 vs 90)
- -You need strong code generation (confidence 96 vs 86)
- -You need strong code review (confidence 95 vs 84)
- -You need strong creative writing (confidence 95 vs 84)
Choose Gemini 3.1 Pro when...
- -You need strong classification (confidence 86 vs 82)
- -Cost matters: 80% 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
Gemini 3.1 Pro
100K tokens
$2.20
$0.50Cheaper
1M tokens
$22.00
$5.00Cheaper
10M tokens
$220.00
$50.00Cheaper
FAQ
When should I use Claude Fable 5 instead of Gemini 3.1 Pro?
Claude Fable 5 outperforms Gemini 3.1 Pro for Reasoning, Code Generation, Code Review. 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 1,000K token context window. Gemini 3.1 Pro has a 1,000K token context window.
Track your real costs
Comparisons show estimated costs at list price. The dashboard reveals your real spend and savings.