Gemini 2.5 Pro vs Gemini 3.5 Flash API Price Comparison
Prices updated: ·56 quotes
As of : At official rates, Gemini 2.5 Pro is $1.2500/1M input tokens and Gemini 3.5 Flash is $1.5000 — Gemini 2.5 Pro is ~17% cheaper than Gemini 3.5 Flash. Via relay providers, the lowest Gemini 2.5 Pro rate is $0.0517 (TreeRouter) and Gemini 3.5 Flash is $0.0621 (TreeRouter). Context windows: Gemini 2.5 Pro 1000K, Gemini 3.5 Flash 1000K. Gemini 2.5 Pro and Gemini 3.5 Flash support image input. 56 provider quotes tracked (Gemini 2.5 Pro: 42, Gemini 3.5 Flash: 14), updated daily.
Gemini 2.5 ProMid-tier
Official
$1.2500
/ 1M tokens
Best Price
$0.0517
/ 1M tokens
42 providers · 1000K Context · 👁 Vision
Gemini 3.5 FlashMid-tier
Official
$1.5000
/ 1M tokens
Best Price
$0.0621
/ 1M tokens
14 providers · 1000K Context · 👁 Vision
At official prices, Gemini 2.5 Pro is ~17% cheaper. At the best relay price, Gemini 2.5 Pro is ~17% cheaper.
Price Comparison
| Gemini 2.5 Pro | Gemini 3.5 Flash | |
|---|---|---|
| Official input / 1M tokens | $1.2500 ✓ | $1.5000 |
| Official output / 1M tokens | $10.0000 | $9.0000 ✓ |
| Cheapest input / 1M tokens | $0.0517 ✓ | $0.0621 |
| Cheapest output / 1M tokens | $0.4138 | $0.3724 ✓ |
| providers | 42 | 14 |
| Context | 1000K | 1000K |
| Vision | ✓ | ✓ |
Gemini 2.5 Pro — All Providers
Detail page →Gemini 3.5 Flash — All Providers
Detail page →Frequently Asked Questions
Which is cheaper, Gemini 2.5 Pro or Gemini 3.5 Flash?
At official price, Gemini 2.5 Pro is cheaper by ~17%. At the best relay price, Gemini 2.5 Pro with a ~17% difference.
What context window do Gemini 2.5 Pro and Gemini 3.5 Flash support?
Gemini 2.5 Pro has a 1000K token context window; Gemini 3.5 Flash has 1000K tokens.
Do Gemini 2.5 Pro and Gemini 3.5 Flash support image input?
Gemini 2.5 Pro supports image input; Gemini 3.5 Flash supports image input.
What is the cheapest way to access Gemini 2.5 Pro or Gemini 3.5 Flash?
Gemini 2.5 Pro's lowest input price is $0.0517/1M tokens (TreeRouter). Gemini 3.5 Flash's is $0.0621/1M tokens (TreeRouter). Relay providers typically offer lower prices with different SLA terms.
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