GPT-3.5 Turbo vs GLM 4.5
GPT-3.5 Turbo is cheaper on output tokens, while GLM 4.5 offers a larger context window. Choose GPT-3.5 Turbo or GLM 4.5 based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-3.5 Turbo | GLM 4.5 |
|---|---|---|
| Provider | Vercel AI Gateway | Vercel AI Gateway |
| Input / 1M tokens | $0.50 | $0.60 |
| Output / 1M tokens | $1.50 | $2.20 |
| Context window | 16K | 128K |
| Parameters | 20B | 355B |
| Open weights | No | Yes |
| Released | Mar 2023 | Jul 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.