gpt-oss-20b vs GLM-5.1
gpt-oss-20b is cheaper on output tokens, while GLM-5.1 offers a larger context window. Choose gpt-oss-20b or GLM-5.1 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | gpt-oss-20b | GLM-5.1 |
|---|---|---|
| Provider | Weights & Biases | Weights & Biases |
| Input / 1M tokens | $0.05 | $1.40 |
| Output / 1M tokens | $0.20 | $4.40 |
| Context window | 131K | 200K |
| Parameters | 21B | 754B |
| Open weights | No | Yes |
| Released | Aug 2025 | Apr 2026 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.