Kimi K3.1 Pro vs Muse Spark Open (Xhigh)
Which is better for the money: Kimi K3.1 Pro by Kimi or Muse Spark Open (Xhigh) by Meta? Intelligence, total benchmark cost, and end-to-end time from Artificial Analysis & other sources, snapshot 2026-10-24.
Trade-off
Verdict
Depends on your budget
Kimi K3.1 Pro scores 16.2 points higher (55.1 vs 38.9) but costs 2.6× as much to run the benchmark ($3117 vs $1185; flagship vs premium cost classes). Pick Kimi K3.1 Pro when the extra intelligence is worth the premium, otherwise Muse Spark Open (Xhigh).
| Metric | Kimi K3.1 Pro | Muse Spark Open (Xhigh) | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 55.1 | 38.9 | −29.4% Muse Spark Open (Xhig… is 29.4% less intelligent |
| Total AA cost (lower is better) | $3,117.31 | $1,184.90 | −62.0% Muse Spark Open (Xhig… is 62.0% cheaper |
| End-to-end time (lower is better) | 42.64s | 17.34s | −59.3% Muse Spark Open (Xhig… is 59.3% faster |
| Price per 1M tokens (in / out) | $2.00 / $10.0 | $1.25 / $4.25 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
Muse Spark Open (Xhigh) vs Kimi K3.1 Pro: 29.4% less intelligence, 62.0% less cost to run the AA benchmark, and 59.3% faster end-to-end.
Today's Pareto frontier
Against the frontier
- Kimi K3.1 Pro is on today's frontier: nothing is both smarter and cheaper.
- Muse Spark Open (Xhigh) is off the frontier: at the same or lower cost, GPT-6.1 Sol (Max) scores 51.80 for $1082.
Kimi K3.1 ProMuse Spark Open (Xhigh)Today's Pareto frontierOpen-weights frontierEvery other model
Matchup
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