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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.
💰StepFun: Step 3.5 Flash is 100% cheaper than Z.ai: GLM Flash Latest
⚡Z.ai: GLM Flash Latest is 17ms faster than StepFun: Step 3.5 Flash
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
| Spec | StepFun: Step 3.5 Flash | Z.ai: GLM Flash Latest |
|---|---|---|
| Provider | stepfun | ~z-ai |
| Input price / 1M tokens | Free | $0.01 |
| Output price / 1M tokens | — | $0.18 |
| Context window | 262k tokens | 1049k tokens |
| Latency (p50) | 17ms | — |
| Best benchmark score | — | — |
| Open source | No | No |
Step 3.5 Flash is StepFun's most capable open-source foundation model. Built on a sparse Mixture of Experts (MoE) architecture, it selectively activates only 11B of its 196B parameters per token....
This model always redirects to the latest model in the GLM Flash family.
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