tokevenGemini 3.5 Flash vs Gemini 2.5 Flash
Side-by-side comparison of pricing, task quality, and projected cost at higher scale.
Pricing
Side-by-side pricing
Gemini 3.5 Flash
Fast / BudgetGemini 2.5 Flash
Fast / BudgetQuality
Task confidence comparison
Guidance
When to use Gemini 3.5 Flash vs Gemini 2.5 Flash
Choose Gemini 3.5 Flash when...
- Similar performance; consider provider preference or ecosystem fit.
Choose Gemini 2.5 Flash when...
- -Cost matters: 80% cheaper on input tokens
At scale
Cost at scale
FAQ
When should I use Gemini 3.5 Flash instead of Gemini 2.5 Flash?
Gemini 3.5 Flash and Gemini 2.5 Flash perform similarly across all tracked tasks. Pick based on pricing and provider preference.
Is Gemini 2.5 Flash cheaper than Gemini 3.5 Flash?
Yes. Gemini 2.5 Flash input costs $0.30/MTok vs $1.50/MTok for Gemini 3.5 Flash, saving 80% on input.
What are the context window sizes for Gemini 3.5 Flash and Gemini 2.5 Flash?
Gemini 3.5 Flash has a 1,048.576K token context window. Gemini 2.5 Flash 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 Gemini 3.5 Flash and Gemini 2.5 Flash 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.