tokevenGemini 3.1 Flash-Lite vs Grok 4.20 Reasoning
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Gemini 3.1 Flash-Lite
Fast / BudgetGrok 4.20 Reasoning
Mid-tierQuality
Task confidence comparison
Guidance
When to use Gemini 3.1 Flash-Lite vs Grok 4.20 Reasoning
Choose Gemini 3.1 Flash-Lite when...
- -Cost matters: 80% cheaper on input tokens
- -You need a larger context window (1,048.576K vs 1,000K)
Choose Grok 4.20 Reasoning when...
- Similar performance; consider provider preference or ecosystem fit.
At scale
Cost at scale
FAQ
When should I use Gemini 3.1 Flash-Lite instead of Grok 4.20 Reasoning?
Gemini 3.1 Flash-Lite and Grok 4.20 Reasoning perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Grok 4.20 Reasoning cheaper than Gemini 3.1 Flash-Lite?
Grok 4.20 Reasoning input costs $1.25/MTok, which is 400% more than Gemini 3.1 Flash-Lite at $0.25/MTok.
What are the context window sizes for Gemini 3.1 Flash-Lite and Grok 4.20 Reasoning?
Gemini 3.1 Flash-Lite has a 1,048.576K token context window. Grok 4.20 Reasoning has a 1,000K token context window.
Go deeper on either model
Per-call cost calculators, provider lineups, and price history for both models on this page.
Gemini 3.1 Flash-Lite pricing & benchmarks
$0.25 / $1.50 per MTok
Gemini 3.1 Flash-Lite cost calculator
All Gemini models
Gemini 3.1 Flash-Lite pricing history
Grok 4.20 Reasoning pricing & benchmarks
$1.25 / $2.50 per MTok
Grok 4.20 Reasoning cost calculator
All Grok models
Grok 4.20 Reasoning pricing history
Other comparisons
How Gemini 3.1 Flash-Lite and Grok 4.20 Reasoning 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.