OpenAI: GPT-4o-mini Search Preview wins on more metrics (4 of 5), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | OpenAI: GPT-4o-mini Search Preview | OpenAI: GPT-5.5 Pro |
|---|---|---|
| Intelligence Index | — | — |
| Coding Index | — | — |
| GPQA Diamond | — | — |
| Design Arena Elo | — | — |
| Speed (tokens/sec) | 56✓ | 17 |
| Latency | 2.2s✓ | 50.2s |
| Input price /M | $0.150✓ | $30.00 |
| Output price /M | $0.600✓ | $180.00 |
| Context window | 128K | 1.1M✓ |
| Capabilities | JSON | ReasoningToolsJSONVision |