tokevenGPT 4o vs Gemini 3.1 Pro Custom Tools
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
GPT 4o
Mid-tierGemini 3.1 Pro Custom Tools
Mid-tierQuality
Task confidence comparison
Guidance
When to use GPT 4o vs Gemini 3.1 Pro Custom Tools
Choose GPT 4o when...
- Similar performance; consider provider preference or ecosystem fit.
Choose Gemini 3.1 Pro Custom Tools when...
- -Cost matters: 20% cheaper on input tokens
- -You need a larger context window (1,048.576K vs 128K)
At scale
Cost at scale
FAQ
When should I use GPT 4o instead of Gemini 3.1 Pro Custom Tools?
GPT 4o and Gemini 3.1 Pro Custom Tools perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Gemini 3.1 Pro Custom Tools cheaper than GPT 4o?
Yes. Gemini 3.1 Pro Custom Tools input costs $2.00/MTok vs $2.50/MTok for GPT 4o, saving 20% on input.
What are the context window sizes for GPT 4o and Gemini 3.1 Pro Custom Tools?
GPT 4o has a 128K token context window. Gemini 3.1 Pro Custom Tools has a 1,048.576K 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 GPT 4o and Gemini 3.1 Pro Custom Tools 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.