Google: Gemini 3.6 Flash vs OpenAI: GPT-5.5
On input price, Google: Gemini 3.6 Flash is ~6.7× cheaper. Verified 2026-08-23.
| Metric | Google: Gemini 3.6 Flash | OpenAI: GPT-5.5 |
|---|---|---|
| Input / 1M | $0.750 | $5.00 |
| Output / 1M | $3.75 | $30.00 |
| Cache read / 1M | $0.075 | $0.500 |
| Context window | 1.0M | 1.1M |
| Max output | 66K | 128K |
Monthly cost by workload
| Workload | Google: Gemini 3.6 Flash | OpenAI: GPT-5.5 | Cheaper |
|---|---|---|---|
| Chatbot | $21.00 | $160.00 | Google: Gemini 3.6 Flash |
| Coding agent | $67.50 | $500.00 | Google: Gemini 3.6 Flash |
| RAG pipeline | $146.25 | $1050.00 | Google: Gemini 3.6 Flash |
Full details: Google: Gemini 3.6 Flash pricing · OpenAI: GPT-5.5 pricing