Comparison
Gemini 3.1 Pro Preview vs GPT-4o
Gemini 3.1 Pro Preview costs 20% less per input token than GPT-4o. Output pricing favors GPT-4o, 17% less per token than Gemini 3.1 Pro Preview.
| Field | Gemini 3.1 Pro Preview | GPT-4o Legacy |
|---|---|---|
| Provider | OpenAI | |
| Context window | — | 128K |
| Max output | — | — |
| Input / 1M | $2.0020% cheaper | $2.50 |
| Output / 1M | $12.00 | $10.0017% cheaper |
| Cached input / 1M | $0.2084% cheaper | $1.25 |
| Batch discount | 50% | — |
| Release date | — | — |
Worked cost examples
Estimated monthly cost on three common usage shapes
| Workload | Gemini 3.1 Pro Preview | GPT-4o |
|---|---|---|
Chatbot 800 input / 200 output tokens per request, 100,000 requests/month | $400.00 | $400.00 |
RAG pipeline 6,000 input / 700 output tokens per request, 30,000 requests/month | $612.00cheaper | $660.00 |
Batch summarization 20,000 input / 1,500 output tokens per request, 5,000 requests/month | $290.00cheaper | $325.00 |
Gemini 3.1 Pro Preview vs GPT-4o FAQ
- Is Gemini 3.1 Pro Preview cheaper than GPT-4o?
- Gemini 3.1 Pro Preview costs $2.00 per 1M input tokens versus $2.50 for GPT-4o — Gemini 3.1 Pro Preview is 20% cheaper per input token.
- Which is cheaper for output tokens, Gemini 3.1 Pro Preview or GPT-4o?
- Gemini 3.1 Pro Preview charges $12.00 per 1M output tokens; GPT-4o charges $10.00 per 1M output tokens.
- Do Gemini 3.1 Pro Preview and GPT-4o offer cache pricing?
- Gemini 3.1 Pro Preview discounts cached input to $0.20 per 1M tokens. GPT-4o discounts cached input to $1.25 per 1M tokens.
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