Grok-4 vs GPT-5.1-Codex-Max
GPT-5.1-Codex-Max is cheaper on output tokens, while GPT-5.1-Codex-Max offers a larger context window. Choose Grok-4 or GPT-5.1-Codex-Max based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Grok-4 | GPT-5.1-Codex-Max |
|---|---|---|
| Provider | Poe | Poe |
| Input / 1M tokens | $3.00 | $1.10 |
| Output / 1M tokens | $15.00 | $9.00 |
| Context window | 256K | 400K |
| Parameters | 3T | — |
| Open weights | No | No |
| Released | Jul 2025 | Dec 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.