| Gemini 3 Ultra | GPT-5.5 | |
|---|---|---|
| arenaElo | 1441 | 1432 |
| humanEval | 91 | 94.2 |
| sweBench | 66 | 66 |
| mmlu | 93.4 | 93 |
| gpqa | 72.6 | 68.7 |
| aime | 93 | 92 |
| Price in/out ($/M) | $18 / $72 | $12 / $48 |
Ultra wins on context and video modality; GPT-5.5 wins on coding, tool-calling polish and ecosystem. Price is close. Let your cloud contract and your data locality constraints decide.