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 | Abacus | Abacus |
| Input / 1M tokens | $3.00 | $1.25 |
| Output / 1M tokens | $15.00 | $10.00 |
| Context window | 256K | 400K |
| Parameters | 3T | — |
| Open weights | No | No |
| Released | Jul 2025 | Nov 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.