Output tokens cost $3.00 per million on Gemini 3.1 Flash Image Preview and $3.94 per million on GLM 5.2. Input tokens cost $0.50 per million on Gemini 3.1 Flash Image Preview and $1.13 per million on GLM 5.2. Cached input tokens are billed at $0.50 per million on Gemini 3.1 Flash Image Preview and $0.28 per million on GLM 5.2. Time to first token (TTFT) measured on AIHubMix is 10.1s on Gemini 3.1 Flash Image Preview and 1.1s on GLM 5.2. Measured output throughput is 122.4 tok/s on Gemini 3.1 Flash Image Preview and 38.1 tok/s on GLM 5.2.
Gemini 3.1 Flash Image Preview
GLM 5.2gemini-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.
GLM-5.2 is Z.ai’s flagship model for the era of long-horizon tasks. With a truly usable 1M-token context window, it can handle project-level engineering context, execute long-running tasks more reliably, follow engineering standards more consistently, and complete the full development workflow from requirements to multi-platform deployment in a single task.
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; GLM 5.2: $3.94/M. Use the cost calculator above to estimate your own workload.
GLM 5.2: 1.1s 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 GLM 5.2 at 38.1 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; GLM 5.2 accepts text input and supports thinking, tool calling, 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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