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 | Fireworks AI | Fireworks AI |
| Input / 1M tokens | $0.07 | $1.40 |
| Output / 1M tokens | $0.30 | $4.40 |
| Context window | 131K | 203K |
| Parameters | 21B | 754B |
| Open weights | Yes | 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.