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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-oss-20b is 100% cheaper than Z.ai: GLM Latest
⚡Z.ai: GLM Latest is 404ms faster than openai/gpt-oss-20b
Price (lower is better), Speed/Latency (lower is better), Performance (higher is better)
| Spec | openai/gpt-oss-20b | Z.ai: GLM Latest |
|---|---|---|
| Provider | groq | ~z-ai |
| Input price / 1M tokens | Free | $0.07 |
| Output price / 1M tokens | — | $1.40 |
| Context window | 131k tokens | 1049k tokens |
| Latency (p50) | 404ms | — |
| Best benchmark score | — | — |
| Open source | No | No |
gpt-oss-20b is an open-weight 21B parameter model released by OpenAI under the Apache 2.0 license. It uses a Mixture-of-Experts (MoE) architecture with 3.6B active parameters per forward pass, optimized for...
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