Gemini 3.1 Pro vs GPT-5.4 Mini
List-price comparison ·Gemini 3.1 Pro details ·GPT-5.4 Mini details
For a typical workload (100,000 requests / mo), GPT-5.4 Mini is the cheapest — 63% less than the priciest here ($270.00/mo vs $720.00/mo).
| Gemini 3.1 Pro | GPT-5.4 Mini | |
|---|---|---|
| Input / 1M tokens | $2.00 | $0.750 |
| Output / 1M tokens | $12.00 | $4.50 |
| Typical request (1,200 in + 400 out) | $0.0072 | $0.0027 |
| Context window | 1,048,576 tokens | 400k tokens |
| Max output | 65,536 tokens | 128k tokens |
| Quality score | 93/100 | 80/100 |
| Tier | Flagship | Balanced |
| Provider | OpenAI |
Projected monthly cost
| Requests / mo | Gemini 3.1 Pro | GPT-5.4 Mini |
|---|---|---|
| 1,000 | $7.20 | $2.70 |
| 10,000 | $72.00 | $27.00 |
| 100,000 | $720.00 | $270.00 |
Gemini 3.1 Pro
Native audio, video, and document understanding with a ~1M token context window — strong fit for multi-modal RAG and large-document analysis.
Output token cost is steep relative to input, and the largest context windows can be slow to fill — chunk large documents where possible.
GPT-5.4 Mini
Good default for everyday chat, summarization, and lightweight agent steps where GPT-5.4-level reasoning isn't required.
Quality gap widens on long, multi-hop reasoning tasks — needs careful prompt design to avoid silent failures on edge cases.
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Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.