Gemini 3.1 Pro vs GPT-5.4 Nano
List-price comparison · Gemini 3.1 Pro details · GPT-5.4 Nano details
For a typical workload (100,000 requests / mo), GPT-5.4 Nano costs 90% less — $74.00/mo vs $720.00/mo.
| Gemini 3.1 Pro | GPT-5.4 Nano | |
|---|---|---|
| Input / 1M tokens | $2.00 | $0.200 |
| Output / 1M tokens | $12.00 | $1.25 |
| Typical request (1,200 in + 400 out) | $0.0072 | $0.0007 |
| Context window | 1,048,576 tokens | 400k tokens |
| Max output | 65,536 tokens | 128k tokens |
| Tier | Flagship | Flash |
| Provider | OpenAI |
Projected monthly cost
Rows open both models in the calculator — adjust volume and token counts there.
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 Nano
Cheapest OpenAI option for high-throughput classification, tagging, and routing — ideal as a first-pass filter before a stronger model.
Limited reasoning depth means it should be treated as a triage layer, not a final answer source, for anything business-critical.
More comparisons
Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.