OpenAI Codex MinivsGPT-5.2 Chat
OpenAI Codex Mini is cheaper than GPT-5.2 Chat at $1.5/M vs $1.75/M input tokens.
| Spec | OpenAI Codex Mini | GPT-5.2 Chat |
|---|---|---|
| Input price | $1.5/M tokens | $1.75/M tokens |
| Output price | $6/M tokens | $14/M tokens |
| Context window | 200K tokens | 128K tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | May 2025 | Dec 2025 |
| SWE-bench Verified | 71.3% | 80.0% |
Our Verdict
GPT-5.2 Chat
OpenAI Codex MiniRunner-up
Not enough votes to call it. On the specs, GPT-5.2 Chat has the edge: bigger model tier, newer.
Too close to call
API pricing
Cost per 1M tokens
OpenAI Codex Mini
Input
$1.50
1.2× cheaper
Output
$6.00
2.3× cheaper
GPT-5.2 Chat
Input
$1.75
Output
$14.00
OpenAI Codex Mini is cheaper on both: 1.2× input, 2.3× output.
Where to run it
1 host
OpenAI Codex Mini
No hosts listed on OpenRouter.
GPT-5.2 Chat1 host
Per million tokens. Prices and uptime via OpenRouter, checked 8 Sep 2026.
Research
What we learned reading every model
FAQ
Common questions
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