Output tokens cost $3.94 per million on GLM 5.2 and $15.00 per million on GPT 5.4 Low. Input tokens cost $1.13 per million on GLM 5.2 and $2.50 per million on GPT 5.4 Low. Cached input tokens are billed at $0.28 per million on GLM 5.2 and $0.25 per million on GPT 5.4 Low. Context lengths are 1,000,000 tokens on GLM 5.2 and 400,000 tokens on GPT 5.4 Low.
GLM 5.2
GPT 5.4 LowGLM-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.
GPT-5.4 supports configuring reasoning strength only through the /responses endpoint. To make lower-overhead reasoning available directly in the /chat endpoint, the GPT-5.4-Low model is provided. This model is based on GPT-5.4 with reasoning_effort preset to low. This model is designed for use cases that are sensitive to response latency and cost. By adopting a lighter reasoning strategy, it delivers stable responses with lower latency and higher throughput. It is well suited for high-concurrency conversations, real-time interactions, basic Q&A, and scenarios where deep reasoning is not required.
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.
GLM 5.2: $3.94/M output tokens; GPT 5.4 Low: $15.00/M. Use the cost calculator above to estimate your own workload.
GLM 5.2 accepts 1,000,000 and GPT 5.4 Low accepts 400,000 input tokens. Maximum output per request is 128,000 tokens on GLM 5.2 and 128,000 tokens on GPT 5.4 Low.
GLM 5.2 accepts text input and supports thinking, tool calling, function calling and structured outputs; GPT 5.4 Low accepts text and image input and supports thinking, function calling, web search, structured outputs and tool calling.
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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