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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 ProGPT-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 window1,048,576 tokens400k tokens
Max output65,536 tokens128k tokens
TierFlagshipFlash
ProviderGoogleOpenAI

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.