GPT-5.3 Chat (latest) vs GLM-4.5
GLM-4.5 is cheaper on output tokens, while GLM-4.5 offers a larger context window. Choose GPT-5.3 Chat (latest) or GLM-4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-5.3 Chat (latest) | GLM-4.5 |
|---|---|---|
| Provider | 302.AI | 302.AI |
| Input / 1M tokens | $1.75 | $0.29 |
| Output / 1M tokens | $14.00 | $1.14 |
| Context window | 128K | 131K |
| Parameters | — | 355B |
| Open weights | No | Yes |
| Released | Mar 2026 | Jul 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.