GPT-5.5 vs Gemini 3.5 Flash API Price Comparison
GPT-5.5
Official
$5.0000
/ 1M tokens
Best Price
$1.7069
/ 1M tokens
5 providers · 1050K Context · 👁 Vision
Gemini 3.5 Flash
Official
$1.5000
/ 1M tokens
Best Price
$1.5000
/ 1M tokens
4 providers · 1000K Context · 👁 Vision
At official prices, Gemini 3.5 Flash is ~70% cheaper. At the best relay price, Gemini 3.5 Flash is ~12% cheaper.
Price Comparison
| GPT-5.5 | Gemini 3.5 Flash | |
|---|---|---|
| Official input / 1M tokens | $5.0000 | $1.5000 ✓ |
| Official output / 1M tokens | $30.0000 | $9.0000 ✓ |
| Cheapest input / 1M tokens | $1.7069 | $1.5000 ✓ |
| Cheapest output / 1M tokens | $10.2414 | $9.0000 ✓ |
| providers | 5 | 4 |
| Context | 1050K | 1000K |
| Vision | ✓ | ✓ |
GPT-5.5 — All Providers
Detail page →Gemini 3.5 Flash — All Providers
Detail page →Frequently Asked Questions
Which is cheaper, GPT-5.5 or Gemini 3.5 Flash?
At official price, Gemini 3.5 Flash is cheaper by ~70%. At the best relay price, Gemini 3.5 Flash with a ~12% difference.
What context window do GPT-5.5 and Gemini 3.5 Flash support?
GPT-5.5 has a 1050K token context window; Gemini 3.5 Flash has 1000K tokens.
Do GPT-5.5 and Gemini 3.5 Flash support image input?
GPT-5.5 supports image input; Gemini 3.5 Flash supports image input.
What is the cheapest way to access GPT-5.5 or Gemini 3.5 Flash?
GPT-5.5's lowest input price is $1.7069/1M tokens (YunWu AI). Gemini 3.5 Flash's is $1.5000/1M tokens (302.AI). Relay providers typically offer lower prices with different SLA terms.
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