GPT-5.6 Terra (Non-reasoning) vs Muse Spark Open (Xhigh)
Which is better for the money: GPT-5.6 Terra (Non-reasoning) by OpenAI or Muse Spark Open (Xhigh) by Meta? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-26.
Trade-off
Verdict
Depends on your budget
Muse Spark Open (Xhigh) scores 18.1 points higher (38.9 vs 20.8) but costs 4.6× as much to run the benchmark ($1185 vs $256; premium vs mid-range cost classes). They are not alternatives at one budget: pick Muse Spark Open (Xhigh) when you need intelligence above 20.8, and GPT-5.6 Terra (Non-reasoning) when 20.8 is enough.
| Metric | GPT-5.6 Terra (Non-reasoning) | Muse Spark Open (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 20.8 | 38.9 | +87.0% Muse Spark Open (Xhig… is 87.0% more intelligent |
| Total AA cost (lower is better) | $255.77 | $1,184.90 | +363.3% Muse Spark Open (Xhig… is 4.6× more expensive |
| End-to-end time (lower is better) | 5.09s | 16.45s | +223.2% Muse Spark Open (Xhig… is 223.2% slower |
| Price per 1M tokens (in / out) | $2.00 / $12.0 | $1.25 / $4.25 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Muse Spark Open (Xhigh) vs GPT-5.6 Terra (Non-reasoning): 87.0% more intelligence, 363.3% more cost to run the AA benchmark, and 223.2% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Terra (Non-reasoning) is off the frontier: at the same or lower cost, MiMo-V2.6-Pro scores 46.30 for $207.
- Muse Spark Open (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
GPT-5.6 Terra (Non-reasoning)Muse Spark Open (Xhigh)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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