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Gemini 2.5 Flash vs GPT-5.4 Mini
List-price comparison · Gemini 2.5 Flash details · GPT-5.4 Mini details
For a typical workload (100,000 requests / mo), Gemini 2.5 Flash costs 50% less — $136.00/mo vs $270.00/mo.
| Gemini 2.5 Flash | GPT-5.4 Mini | |
|---|---|---|
| Input / 1M tokens | $0.300 | $0.750 |
| Output / 1M tokens | $2.50 | $4.50 |
| Typical request (1,200 in + 400 out) | $0.0014 | $0.0027 |
| Context window | 1,048,576 tokens | 400k tokens |
| Max output | 65,535 tokens | 128k tokens |
| Tier | Balanced | Balanced |
| Provider | OpenAI |
Projected monthly cost
1,000 requests / month$1.36 vs $2.7010,000 requests / month$13.60 vs $27.00100,000 requests / month$136.00 vs $270.00
Rows open both models in the calculator — adjust volume and token counts there.
Gemini 2.5 Flash
Auto-synced from OpenRouter — no editorial write-up yet.
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.
More comparisons
Vendor list rates · per-request examples assume 1,200 input + 400 output tokens.