Gemini 3.5 Flash vs GPT-5.4 Nano
List-price comparison · Gemini 3.5 Flash details · GPT-5.4 Nano details
For a typical workload (100,000 requests / mo), GPT-5.4 Nano costs 86% less — $74.00/mo vs $540.00/mo.
| Gemini 3.5 Flash | GPT-5.4 Nano | |
|---|---|---|
| Input / 1M tokens | $1.50 | $0.200 |
| Output / 1M tokens | $9.00 | $1.25 |
| Typical request (1,200 in + 400 out) | $0.0054 | $0.0007 |
| Context window | 1,048,576 tokens | 400k tokens |
| Max output | 65,536 tokens | 128k tokens |
| Tier | Flash | Flash |
| Provider | OpenAI |
Projected monthly cost
Rows open both models in the calculator — adjust volume and token counts there.
Gemini 3.5 Flash
Fast, cheap multi-modal model with the same 1M-token context as the Pro tier — good for high-volume document Q&A and image/audio triage.
Reasoning quality trails the Pro tier on complex, multi-step tasks; best used where speed and context size matter more than depth.
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.