GPT-5.2-Codex vs GPT-5.3 Chat
Both have similar output pricing, while GPT-5.2-Codex offers a larger context window. Choose GPT-5.2-Codex or GPT-5.3 Chat based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | GPT-5.2-Codex | GPT-5.3 Chat |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Input / 1M tokens | $1.75 | $1.75 |
| Output / 1M tokens | $14.00 | $14.00 |
| Context window | 400K | 128K |
| Parameters | — | — |
| Open weights | No | — |
| Released | Dec 2025 | — |
| LiveBench score | 74.3 | — |
| LMArena WebDev Elo score | 1339 | — |
| SWE-bench Multilingual score | 66.3 | — |
| SWE-bench Verified score | 72.8 | — |
| LMArena (Chatbot Arena) Elo score | — | 1389 |
FAQ
Is GPT-5.2-Codex or GPT-5.3 Chat cheaper?
GPT-5.2-Codex and GPT-5.3 Chat have comparable output pricing.
Which has the larger context window, GPT-5.2-Codex or GPT-5.3 Chat?
GPT-5.2-Codex has the larger context window (400K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.