OpenAI: GPT-5.4 Mini wins on more metrics (5 of 8), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | OpenAI: GPT-4o-mini | OpenAI: GPT-5.4 Mini |
|---|---|---|
| Intelligence Index | — | 23.3✓ |
| Coding Index | — | 25.3✓ |
| GPQA Diamond | 43% | 61%✓ |
| Design Arena Elo | — | — |
| Speed (tokens/sec) | 44 | 94✓ |
| Latency | 542ms✓ | 735ms |
| Input price /M | $0.150✓ | $0.750 |
| Output price /M | $0.600✓ | $4.50 |
| Context window | 128K | 400K✓ |
| Capabilities | ToolsJSONVision | ReasoningToolsJSONVision |