Output tokens cost $3.00 per million on Gemini 3.1 Flash Image Preview and $15.00 per million on Kimi K3. Input tokens cost $0.50 per million on Gemini 3.1 Flash Image Preview and $3.00 per million on Kimi K3. Cached input tokens are billed at $0.50 per million on Gemini 3.1 Flash Image Preview and $0.30 per million on Kimi K3. Time to first token (TTFT) measured on AIHubMix is 10.1s on Gemini 3.1 Flash Image Preview and 0.9s on Kimi K3. Measured output throughput is 122.4 tok/s on Gemini 3.1 Flash Image Preview and 73.1 tok/s on Kimi K3.
Gemini 3.1 Flash Image Preview
Kimi K3gemini-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.
Kimi K3 is Kimi’s flagship model for long-horizon coding and end-to-end knowledge work, with a 1M-token context window and industry-leading intelligence.
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; Kimi K3: $15.00/M. Use the cost calculator above to estimate your own workload.
Kimi K3: 0.9s 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 Kimi K3 at 73.1 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; Kimi K3 accepts text, image and video input and supports thinking, function calling and structured outputs.
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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