Context lengths are 1,000,000 tokens on gemini-3.7-flash-free and 500,000 tokens on grok-4.5. Time to first token (TTFT) measured on AIHubMix is 2.9s on gemini-3.7-flash-free and 2.4s on grok-4.5. Measured output throughput is 81.6 tok/s on gemini-3.7-flash-free and 37.0 tok/s on grok-4.5.
gemini-3.7-flash-free
grok-4.5Gemini 3.7 Flash free version: fFree model resources are limited and provided only for trial use; stability cannot be guaranteed, and you may encounter 429 errors during use. If you need to use it in a production environment and require unlimited concurrency with absolute stability, please choose the official version: gemini-3.7-flash
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.
grok-4.5: 2.4s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
gemini-3.7-flash-free accepts 1,000,000 and grok-4.5 accepts 500,000 input tokens. Maximum output per request is 64,000 tokens on gemini-3.7-flash-free and 500,000 tokens on grok-4.5.
gemini-3.7-flash-free at 81.6 tok/s and grok-4.5 at 37.0 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
gemini-3.7-flash-free accepts text, image, audio and video input and supports thinking, tool calling, function calling, structured outputs, web search and long context; 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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