OpenAI: o4 Mini wins on more metrics (5 of 9), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | Anthropic: Claude Sonnet 4 | OpenAI: o4 Mini |
|---|---|---|
| Intelligence Index | 33.0 | 33.1✓ |
| Coding Index | 30.6✓ | 25.6 |
| GPQA Diamond | 68% | 78%✓ |
| Design Arena Elo | 1220✓ | 1072 |
| Speed (tokens/sec) | 50 | 125✓ |
| Latency | 720ms✓ | 4.7s |
| Input price /M | $3.00 | $1.10✓ |
| Output price /M | $15.00 | $4.40✓ |
| Context window | 1M✓ | 200K |
| Capabilities | ReasoningToolsVision | ReasoningToolsJSONVision |