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Gemini 3.5 Flash (batch) vs GPT-5.4

List-price comparison ·Gemini 3.5 Flash (batch) details ·GPT-5.4 details

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For a typical workload (100,000 requests / mo), Gemini 3.5 Flash (batch) is the cheapest — 70% less than the priciest here ($270.00/mo vs $900.00/mo).

 Gemini 3.5 Flash (batch)GPT-5.4
Input / 1M tokens$0.750$2.50
Output / 1M tokens$4.50$15.00
Typical request (1,200 in + 400 out)$0.0027$0.009
Context window1,048,576 tokens1050k tokens
Max output65,536 tokens128k tokens
Quality score74/10095/100
TierFlashFlagship
ProviderGoogleOpenAI

Projected monthly cost

Requests / moGemini 3.5 Flash (batch)GPT-5.4
1,000$2.70$9.00
10,000$27.00$90.00
100,000$270.00$900.00
Open all in the calculator — adjust volume and token counts →

Gemini 3.5 Flash (batch)

Auto-synced from OpenRouter — no editorial write-up yet.

GPT-5.4

Excellent general-purpose reasoning and broad world knowledge, with strong performance on coding, math, and multi-modal (image + file) inputs.

Output tokens are priced well above input tokens, so verbose responses dominate cost — tight max-token limits and prompt caching matter.

More comparisons

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