GLM-5.3-Flash vs Seed 2.1 Pro
GLM-5.3-Flash is cheaper on output tokens, while GLM-5.3-Flash offers a larger context window. Choose GLM-5.3-Flash or Seed 2.1 Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GLM-5.3-Flash | Seed 2.1 Pro |
|---|---|---|
| Provider | Volcengine Ark | Volcengine Ark |
| Input / 1M tokens | $0.12 | $0.89 |
| Output / 1M tokens | $0.42 | $4.45 |
| Context window | 1M | 256K |
| Parameters | — | — |
| Open weights | Yes | No |
| Released | Aug 2026 | Jun 2026 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.