GPT-5.5 vs Gemini 3.6 Flash
Side-by-side comparison of API pricing, specs, benchmarks, and capabilities
Gemini 3.6 Flash is 74.3% cheaper on blended cost ($4.50 vs $17.50/Mtok)
|
Oby OpenAI
|
Gby Google
|
|
|---|---|---|
| Overview | ||
| Status | Current flagship | Current flagship |
| Released | Nov 15, 2025 | Jul 21, 2026 |
| Pricing per million tokens | ||
| Input | $5.00/Mtok | $1.50/Mtok |
| Output | $30.00/Mtok | $7.50/Mtok |
| Blended avg | $17.50/Mtok | $4.50/Mtok |
| Cached input | $0.500/Mtok | — |
| Specifications | ||
| Context window | 1M tokens | 1M tokens |
| Parameters | Proprietary | Proprietary |
| Speed (TPS) | — | — |
| Modalities | ||
| Input |
textimageaudio
|
textimageaudiovideo
|
| Providers | ||
| Available from |
OpenAI — $5.00/$30.00/Mtok
|
Google — $1.50/$7.50/Mtok
|
Cost at scale — 1M tokens (50/50 input/output)
| Volume | GPT-5.5 | Gemini 3.6 Flash | Savings |
|---|---|---|---|
| 1M tokens | $17.5 | $4.5 | $13 (74.3%) |
| 10M tokens | $175 | $45 | $130 (74.3%) |
| 100M tokens | $1750 | $450 | $1300 (74.3%) |
| 1000M tokens | $17500 | $4500 | $13000 (74.3%) |
Try Gemini 3.6 Flash on Google
The cheaper option here — Gemini 3.6 Flash costs $4.50/Mtok blended on Google.
Summary
GPT-5.5 by OpenAI costs $5.00/Mtok input and $30.00/Mtok output, with a 1M-token context window. It supports text, image, audio input.
Gemini 3.6 Flash by Google costs $1.50/Mtok input and $7.50/Mtok output, with a 1M-token context window. It supports text, image, audio, video input.
On a blended cost basis, Gemini 3.6 Flash is 74.3% cheaper than GPT-5.5.
Note: Pricing is per million tokens. Actual costs vary with usage patterns, prompt caching, and batch discounts. Always verify against official provider pricing pages.