Gemini 3.6 Flash vs GPT-5.5
Side-by-side API pricing and Artificial Analysis performance for Gemini 3.6 Flash (Google) and GPT-5.5 (OpenAI). Green cells mark the better value in each row.
Prices updated Jul 22, 2026, 1:42 AM UTC · refreshed hourly
| Gemini 3.6 Flash | GPT-5.5 OpenAI | |
|---|---|---|
| Pricing | ||
| Input $/1M | $1.50 | $5.00 |
| Output $/1M | $7.50 | $30.00 |
| Blended $/1M (3:1) | $3.00 | $11.25 |
| RAG example (30K in / 2K out) | $0.06 | $0.21 |
| Quality & speed | ||
| Intelligence Index | 50.1 | 54.8 |
| Coding Index | 69.2 | 74.9 |
| Agentic Index | 38.7 | 44.9 |
| Output speed (tok/s) | 301 | 92 |
| Time to first token | 11.80s | 35.93s |
| Specs | ||
| Context window | 1.05M | 1.05M |
| Input modalities | text, image, video, file, audio | file, image, text |
FAQ
Which is cheaper, Gemini 3.6 Flash or GPT-5.5?
Gemini 3.6 Flash has the lower blended API price at $3.00 per 1M tokens (3:1 input:output mix), versus $11.25 for the other model. Prices are live from OpenRouter and refresh about hourly.
Which is better for RAG workloads?
For a typical RAG request (30K input / 2K output tokens), Gemini 3.6 Flash costs about $0.06 per request versus $0.21. Also compare context windows: Gemini 3.6 Flash offers 1.05M and GPT-5.5 offers 1.05M.
Which scores higher on Artificial Analysis benchmarks?
GPT-5.5 leads on the Artificial Analysis Intelligence Index (54.8 vs 50.1). Check coding and agentic indices on this page for workload-specific tradeoffs.