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GPT-5.5 vs Gemini 3.1 Pro Preview
GPT-5.5 and Gemini 3.1 Pro Preview: current price, context, max output, and supported operations.
Pricing comparison
| GPT-5.5 | Gemini 3.1 Pro Preview | |
|---|---|---|
| Model maker | OpenAI | |
| Delivery availability | Available | Available |
| Context window | 1.05M | 1M |
| Max output | 128K | 64K |
| Official price | Input$5.00per 1M tokensOutput$30.00per 1M tokens | Input$2.00per 1M tokensOutput$12.00per 1M tokens |
| Verified price | Input$3.50per 1M tokensOutput$21.00per 1M tokens | Input$1.00per 1M tokensOutput$6.00per 1M tokens |
| Model performance |
|
|
| Capabilities | CodeJSON modePrompt CacheReasoningTool useVision | JSON modePrompt CacheReasoningTool useVision |
Summary
- GPT-5.5: Input $3.50 / Output $21.00 per 1M tokens; Gemini 3.1 Pro Preview: Input $1.00 / Output $6.00 per 1M tokens. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.
- GPT-5.5 supports 2.0x more output tokens
FAQ
Which is cheaper, GPT-5.5 or Gemini 3.1 Pro Preview?
GPT-5.5: Input $3.50 / Output $21.00 per 1M tokens; Gemini 3.1 Pro Preview: Input $1.00 / Output $6.00 per 1M tokens. Rates depend on the billing unit, specification, and usage. Compare matching conditions in the model's detailed pricing; a single rate does not determine the total cost.
What are the key differences between GPT-5.5 and Gemini 3.1 Pro Preview?
GPT-5.5: Code