Meta: Muse Spark 1.1 vs OpenAI: GPT-5.5
OpenAI: GPT-5.5 wins on more metrics (7 of 9), but the right pick depends on what you optimize for — see the breakdown below.
| Metric | Meta: Muse Spark 1.1 | OpenAI: GPT-5.5 |
|---|---|---|
| Intelligence Index | 50.6 | 54.8✓ |
| Coding Index | 71.3 | 74.9✓ |
| GPQA Diamond | 90% | 94%✓ |
| Design Arena Elo | — | 1297✓ |
| Speed (tokens/sec) | — | 73✓ |
| Latency | — | 2.2s✓ |
| Input price /M | $1.25✓ | $5.00 |
| Output price /M | $4.25✓ | $30.00 |
| Context window | 1.0M | 1.1M✓ |
| Capabilities | ReasoningToolsJSONVisionAudio | ReasoningToolsJSONVision |