tokevenGemini 2.5 Pro 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 2.5 Pro
Mid-tierGrok 4.20 Reasoning
Mid-tierQuality
Task confidence comparison
Guidance
When to use Gemini 2.5 Pro vs Grok 4.20 Reasoning
Choose Gemini 2.5 Pro when...
- -You need a larger context window (1,048.576K vs 1,000K)
- Similar performance; consider provider preference or ecosystem fit.
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 2.5 Pro instead of Grok 4.20 Reasoning?
Gemini 2.5 Pro 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 2.5 Pro?
Both models have the same input pricing at $1.25/MTok. Compare output pricing: $10.00 vs $2.50/MTok.
What are the context window sizes for Gemini 2.5 Pro and Grok 4.20 Reasoning?
Gemini 2.5 Pro 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.
Other comparisons
How Gemini 2.5 Pro 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.