GLM-5.1 vs GLM-4.6
GLM-4.6 is cheaper on output tokens, while GLM-4.6 offers a larger context window. Choose GLM-5.1 or GLM-4.6 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GLM-5.1 | GLM-4.6 |
|---|---|---|
| Provider | Zhipu AI | Zhipu AI |
| Input / 1M tokens | $6.00 | $0.60 |
| Output / 1M tokens | $24.00 | $2.20 |
| Context window | 200K | 205K |
| Parameters | 754B | 357B |
| Open weights | No | Yes |
| Released | Mar 2026 | Sep 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.