Grok 4 Fast vs GPT-5 Pro
Grok 4 Fast is cheaper on output tokens, while Grok 4 Fast offers a larger context window. Choose Grok 4 Fast or GPT-5 Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Grok 4 Fast | GPT-5 Pro |
|---|---|---|
| Provider | Requesty | Requesty |
| Input / 1M tokens | $0.20 | $15.00 |
| Output / 1M tokens | $0.50 | $120.00 |
| Context window | 2M | 400K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Sep 2025 | Oct 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.