o3 vs GPT-5.1-Codex-Max
o3 is cheaper on output tokens, while GPT-5.1-Codex-Max offers a larger context window. Choose o3 or GPT-5.1-Codex-Max based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | o3 | GPT-5.1-Codex-Max |
|---|---|---|
| Provider | Poe | Poe |
| Input / 1M tokens | $1.80 | $1.10 |
| Output / 1M tokens | $7.20 | $9.00 |
| Context window | 200K | 400K |
| Parameters | — | — |
| Open weights | No | No |
| Released | Apr 2025 | Dec 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.