GLM-5.3-Flash (free) vs Claude Opus 4.1 (latest)
GLM-5.3-Flash (free) is cheaper on output tokens, while GLM-5.3-Flash (free) offers a larger context window. Choose GLM-5.3-Flash (free) or Claude Opus 4.1 (latest) based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GLM-5.3-Flash (free) | Claude Opus 4.1 (latest) |
|---|---|---|
| Provider | OrcaRouter | OrcaRouter |
| Input / 1M tokens | $0.00 | $15.00 |
| Output / 1M tokens | $0.00 | $75.00 |
| Context window | 1M | 200K |
| Parameters | — | — |
| Open weights | Yes | No |
| Released | Aug 2026 | Aug 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.