GLM-5.1 vs GLM-4.5V
GLM-4.5V is cheaper on output tokens, while GLM-5.1 offers a larger context window. Choose GLM-5.1 or GLM-4.5V based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GLM-5.1 | GLM-4.5V |
|---|---|---|
| Provider | Z.AI | Z.AI |
| Input / 1M tokens | $1.40 | $0.60 |
| Output / 1M tokens | $4.40 | $1.80 |
| Context window | 200K | 64K |
| Parameters | 754B | — |
| Open weights | Yes | Yes |
| Released | Apr 2026 | Aug 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.