GLM 5.1 vs Claude Opus 4.5
GLM 5.1 is cheaper on output tokens, while GLM 5.1 offers a larger context window. Choose GLM 5.1 or Claude Opus 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GLM 5.1 | Claude Opus 4.5 |
|---|---|---|
| Provider | Venice AI | Venice AI |
| Input / 1M tokens | $1.75 | $6.00 |
| Output / 1M tokens | $5.50 | $30.00 |
| Context window | 200K | 198K |
| Parameters | 754B | — |
| Open weights | Yes | No |
| Released | Apr 2026 | Dec 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.