Output tokens cost $3.00 per million on Gemini 3.1 Flash Image Preview and $6.00 per million on Grok 4.5. Input tokens cost $0.50 per million on Gemini 3.1 Flash Image Preview and $2.00 per million on Grok 4.5. Cached input tokens are billed at $0.50 per million on Gemini 3.1 Flash Image Preview and $0.50 per million on Grok 4.5. Time to first token (TTFT) measured on AIHubMix is 10.1s on Gemini 3.1 Flash Image Preview and 1.6s on Grok 4.5. Measured output throughput is 122.4 tok/s on Gemini 3.1 Flash Image Preview and 25.8 tok/s on Grok 4.5.
Gemini 3.1 Flash Image Preview
Grok 4.5gemini-3.1-flash-image-preview (Nano Banana 2) features professional-grade visual intelligence, lightning-fast efficiency, and realistic, grounded generative capabilities. This model serves as the high-efficiency counterpart to Gemini 3 Pro Image, optimized for speed and high-volume developer use cases.
Grok 4.5 was trained on datasets spanning knowledge in coding, science, engineering, and math. With both intelligent and efficient reasoning, Grok 4.5 excels at real engineering tasks and exceeds comparable leading models at these tasks.
Prices are per million tokens. Time to First Token and throughput are rolling averages measured on AIHubMix.
Promotional prices show the discounted rate; see each model page for promotion windows.
Daily traffic served through AIHubMix — how demand for each model is trending.
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
Gemini 3.1 Flash Image Preview: $3.00/M output tokens; Grok 4.5: $6.00/M. Use the cost calculator above to estimate your own workload.
Grok 4.5: 1.6s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
Gemini 3.1 Flash Image Preview at 122.4 tok/s and Grok 4.5 at 25.8 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
Gemini 3.1 Flash Image Preview accepts text and image input and supports thinking; Grok 4.5 accepts text and image input and supports thinking, tool calling, function calling, structured outputs and long context.
Yes. AIHubMix serves every model on this page behind one OpenAI-compatible endpoint, so switching between them is a one-line change to the model field — no second account, key or SDK.
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