Grok 3 vs GPT-5.5-Pro
Grok 3 is cheaper on output tokens, while GPT-5.5-Pro offers a larger context window. Choose Grok 3 or GPT-5.5-Pro based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Grok 3 | GPT-5.5-Pro |
|---|---|---|
| Provider | Poe | Poe |
| Input / 1M tokens | $3.00 | $27.27 |
| Output / 1M tokens | $15.00 | $163.64 |
| Context window | 131K | 400K |
| Parameters | 3T | — |
| Open weights | No | No |
| Released | Apr 2025 | Apr 2026 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.