Gemini 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
gemini-3.7-flash-free vs glm-5.2
Discounted rates are shown where a promotion is active. Context lengths are 1,000,000 tokens on gemini-3.7-flash-free and 1,000,000 tokens on glm-5.2. Time to first token (TTFT) measured on AIHubMix is 3.0s on gemini-3.7-flash-free and 1.8s on glm-5.2. Measured output throughput is 84.2 tok/s on gemini-3.7-flash-free and 49.3 tok/s on glm-5.2.
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.
Pricing & Specifications
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.
Activity Past 30 Days
Daily traffic served through AIHubMix — how demand for each model is trending.
Tokens / day
Requests / day
Performance Past 3 Days
Measured on real AIHubMix traffic, hourly buckets. Gaps mean no traffic in that hour.
Throughput (tok/s)
TTFT (s)
Uptime (%)
Cost calculator
Estimate your monthly bill for the same workload on each model.
Monthly = daily × 30. Discounted rates applied where a promotion is active.
FAQ
Which responds faster?
glm-5.2: 1.8s time to first token measured on AIHubMix; see the live performance charts above for how each model behaves across the day.
How large is each context window?
gemini-3.7-flash-free accepts 1,000,000 and glm-5.2 accepts 1,000,000 input tokens. Maximum output per request is 64,000 tokens on gemini-3.7-flash-free and 128,000 tokens on glm-5.2.
Which one generates tokens faster?
gemini-3.7-flash-free at 84.2 tok/s and glm-5.2 at 49.3 tok/s, measured as output throughput on AIHubMix — a separate metric from time to first token.
What inputs and capabilities does each model support?
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; glm-5.2 accepts text input and supports thinking, tool calling, function calling and structured outputs.
Can I call gemini-3.7-flash-free and glm-5.2 with the same API key?
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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