tokevenGeminivsGrok
Gemini 3.1 Pro vs Grok 4.5
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Gemini 3.1 Pro
Mid-tierGrok 4.5
FlagshipInput $/MTok
$2.00
$2.00
Output $/MTok
$12.00
$6.00
Cache discount
90% off
85% off
Context
1.0M
500K
Quality
Task confidence comparison
Confidence score from zero to one hundred by task type, where higher is better.
Code Generation
57
vs
61
Code Review
84
vs
0
Summarization
80
vs
71
Q&A
87
vs
0
Extraction
75
vs
72
Reasoning
84
vs
87
Classification
86
vs
0
Creative Writing
77
vs
74
Gemini 3.1 Pro
Grok 4.5
Guidance
When to use Gemini 3.1 Pro vs Grok 4.5
Choose Gemini 3.1 Pro when...
- -You need strong summarization (confidence 80 vs 71)
- -You need strong creative writing (confidence 77 vs 74)
- -You need strong extraction (confidence 75 vs 72)
- -You need a larger context window (1.0M vs 500K)
Choose Grok 4.5 when...
- -You need strong reasoning (confidence 87 vs 84)
- -You need strong code generation (confidence 61 vs 57)
At scale
Cost at scale
Estimated cost assuming a seventy percent input and thirty percent output token split.
Gemini 3.1 Pro
Grok 4.5
100K tokens
$0.50
$0.32Cheaper
1M tokens
$8.20
$6.40Cheaper
10M tokens
$82.00
$64.00Cheaper
FAQ
When should I use Gemini 3.1 Pro instead of Grok 4.5?
Gemini 3.1 Pro outperforms Grok 4.5 for Summarization, Extraction, Creative Writing. It costs $2.00/$12.00 per million tokens (input/output).
Is Grok 4.5 cheaper than Gemini 3.1 Pro?
Both models have the same input pricing at $2.00/MTok. Compare output pricing: $12.00 vs $6.00/MTok.
What are the context window sizes for Gemini 3.1 Pro and Grok 4.5?
Gemini 3.1 Pro has a 1.0M token context window. Grok 4.5 has a 500K 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 Gemini 3.1 Pro and Grok 4.5 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.