GPT-5.6 Terra (High) vs Muse Spark Open (Xhigh)
Which is better for the money: GPT-5.6 Terra (High) 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 4.7 points higher (38.9 vs 34.2) but costs 1.5× as much to run the benchmark ($1185 vs $768; both premium class). Pick Muse Spark Open (Xhigh) when the extra intelligence is worth the premium, otherwise GPT-5.6 Terra (High).
| Metric | GPT-5.6 Terra (High) | Muse Spark Open (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.2 | 38.9 | +13.7% Muse Spark Open (Xhig… is 13.7% more intelligent |
| Total AA cost (lower is better) | $767.78 | $1,184.90 | +54.3% Muse Spark Open (Xhig… is 54.3% more expensive |
| End-to-end time (lower is better) | 6.57s | 16.45s | +150.4% Muse Spark Open (Xhig… is 150.4% 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 (High): 13.7% more intelligence, 54.3% more cost to run the AA benchmark, and 150.4% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Terra (High) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Xhigh) scores 51.00 for $662.
- 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 (High)Muse Spark Open (Xhigh)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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