tokevenGemini 3.1 Pro Custom Tools vs Grok 4.3
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Gemini 3.1 Pro Custom Tools
Mid-tierGrok 4.3
Mid-tierQuality
Task confidence comparison
Guidance
When to use Gemini 3.1 Pro Custom Tools vs Grok 4.3
Choose Gemini 3.1 Pro Custom Tools when...
- -You need a larger context window (1,048.576K vs 1,000K)
- Similar performance; consider provider preference or ecosystem fit.
Choose Grok 4.3 when...
- -Cost matters: 38% cheaper on input tokens
At scale
Cost at scale
FAQ
When should I use Gemini 3.1 Pro Custom Tools instead of Grok 4.3?
Gemini 3.1 Pro Custom Tools and Grok 4.3 perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Grok 4.3 cheaper than Gemini 3.1 Pro Custom Tools?
Yes. Grok 4.3 input costs $1.25/MTok vs $2.00/MTok for Gemini 3.1 Pro Custom Tools, saving 38% on input.
What are the context window sizes for Gemini 3.1 Pro Custom Tools and Grok 4.3?
Gemini 3.1 Pro Custom Tools has a 1,048.576K token context window. Grok 4.3 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 3.1 Pro Custom Tools and Grok 4.3 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.