OpenAI o4 Mini High is cheaper than ChatGPT-4o (March 2025) at $1.1/M vs $5/M input tokens.
| Spec | ChatGPT-4o (March 2025) | OpenAI o4 Mini High |
|---|---|---|
| Input price | $5/M tokens | $1.1/M tokens |
| Output price | $15/M tokens | $4.4/M tokens |
| Context window | 128K tokens | 200K tokens |
| Parameters | Not disclosed | Not disclosed |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | Mar 2025 | Apr 2025 |
Not enough votes to call it. On the specs, nothing separates them.
OpenAI o4 Mini High costs 3.4x less per token.
OpenAI o4 Mini High is cheaper on both: 4.5× input, 3.4× output.
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 8 Sep 2026.
ChatGPT-4o (March 2025) uses 329.7x more bold