GPT-5.4 mini vs o4-mini
30-second takeaway
- GPT-5.4 mini has the cheaper input: $0.75 vs $1.1 (per 1M tokens, 32% less)
- GPT-5.4 mini has the larger context: 400K vs 200K tokens
| GPT-5.4 mini OpenAI | o4-mini OpenAI | |
|---|---|---|
| Input | $0.75 | $1.1 |
| Output | $4.5 | $4.4 |
| Context | 400K | 200K |
More specs (max output / capabilities)
| max output | 128,000 | 100,000 |
| Reasoning | ✓ Yes | ✓ Yes |
| Tool calls | ✓ Yes | ✓ Yes |
| Open weights | — No | — No |
Prices are official/data-source rates (per 1M tokens), not what relays actually charge — relay prices vary with discounts and group multipliers. See methodology.