GLM-5.1 vs GPT-4o
GLM-5.1 is cheaper on output tokens, while GLM-5.1 offers a larger context window. Choose GLM-5.1 or GPT-4o based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GLM-5.1 | GPT-4o |
|---|---|---|
| Provider | Pioneer | Pioneer |
| Input / 1M tokens | $0.98 | $2.50 |
| Output / 1M tokens | $3.08 | $10.00 |
| Context window | 202K | 128K |
| Parameters | — | — |
| Open weights | Yes | No |
| Released | Apr 2026 | May 2024 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.