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Side-by-side comparison of API pricing, context window, latency, and benchmark performance. Data refreshed daily from provider APIs and ModelStop's own latency probes.
💰OpenAI: GPT-5.1-Codex-Mini is 100% cheaper than Z.ai: GLM Latest
⚡Z.ai: GLM Latest is 20ms faster than OpenAI: GPT-5.1-Codex-Mini
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
| Spec | OpenAI: GPT-5.1-Codex-Mini | Z.ai: GLM Latest |
|---|---|---|
| Provider | openai | ~z-ai |
| Input price / 1M tokens | Free | $0.07 |
| Output price / 1M tokens | — | $1.40 |
| Context window | 400k tokens | 1049k tokens |
| Latency (p50) | 20ms | — |
| Best benchmark score | — | — |
| Open source | No | No |
GPT-5.1-Codex-Mini is a smaller and faster version of GPT-5.1-Codex
This model always redirects to the latest GLM model from Z.ai.
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