GLM-5.3 vs Claude Opus 5
Both have similar output pricing, while Claude Opus 5 offers a larger context window. Choose GLM-5.3 or Claude Opus 5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GLM-5.3 | Claude Opus 5 |
|---|---|---|
| Provider | Z.ai (Zhipu AI) | Abacus |
| Input / 1M tokens | — | $5.00 |
| Output / 1M tokens | — | $25.00 |
| Context window | — | 1M |
| Parameters | 744B | — |
| Open weights | No | No |
| Released | Aug 2026 | Jul 2026 |
FAQ
Is GLM-5.3 or Claude Opus 5 cheaper?
GLM-5.3 and Claude Opus 5 have comparable output pricing.
Which has the larger context window, GLM-5.3 or Claude Opus 5?
Claude Opus 5 has the larger context window (1M tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.