OpenAI: GPT-5.1 Chat vs OpenAI: GPT-5.2-Codex
OpenAI: GPT-5.1 Chat is cheaper on output tokens, while OpenAI: GPT-5.2-Codex offers a larger context window. Choose OpenAI: GPT-5.1 Chat or OpenAI: GPT-5.2-Codex based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | OpenAI: GPT-5.1 Chat | OpenAI: GPT-5.2-Codex |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / 1M tokens | $1.25 | $1.75 |
| Output / 1M tokens | $10.00 | $14.00 |
| Context window | 128K | 400K |
| Parameters | — | — |
| Open weights | — | No |
| Released | — | Dec 2025 |
FAQ
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.