Gemini 3.1 Pro vs GPT-5.4 Mini

For a typical workload (100,000 requests / mo), GPT-5.4 Mini costs 63% less — $270.00/mo vs $720.00/mo.

Projected monthly cost

Rows open both models in the calculator — adjust volume and token counts there.

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.

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.

Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.