Output tokens cost $3.94 per million on GLM 5.2 and $10.00 per million on GPT-5.1-Codex Max. Input tokens cost $1.13 per million on GLM 5.2 and $1.25 per million on GPT-5.1-Codex Max. Cached input tokens are billed at $0.28 per million on GLM 5.2 and $0.13 per million on GPT-5.1-Codex Max. Context lengths are 1,000,000 tokens on GLM 5.2 and 400,000 tokens on GPT-5.1-Codex Max.
GLM 5.2
GPT-5.1-Codex MaxGLM-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-5.1-Codex-Max is a frontier programming model built for the agent-driven era. Powered by an upgraded core reasoning architecture, it is specially trained for complex agentic tasks in software engineering, mathematics, and scientific research. It delivers faster performance, greater stability, and higher token efficiency across the entire development lifecycle, including code generation, refactoring, debugging, and engineering collaboration. With native support for multiple context windows and a built-in compaction mechanism, the model can coherently process millions of tokens within 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.
GLM 5.2: $3.94/M output tokens; GPT-5.1-Codex Max: $10.00/M. Use the cost calculator above to estimate your own workload.
GLM 5.2 accepts 1,000,000 and GPT-5.1-Codex Max accepts 400,000 input tokens. Maximum output per request is 128,000 tokens on GLM 5.2 and 128,000 tokens on GPT-5.1-Codex Max.
GLM 5.2 accepts text input and supports thinking, tool calling, function calling and structured outputs; GPT-5.1-Codex Max accepts text and image input and supports function calling, structured outputs and thinking.
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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