GPT-5.6 Luna (Xhigh) vs MiMo-V2.6-Pro
Which is better for the money: GPT-5.6 Luna (Xhigh) by OpenAI or MiMo-V2.6-Pro by Xiaomi? 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
MiMo-V2.6-Pro scores 11.7 points higher (46.3 vs 34.6) but costs 1.2× as much to run the benchmark ($207 vs $179; both mid-range class). Pick MiMo-V2.6-Pro when the extra intelligence is worth the premium, otherwise GPT-5.6 Luna (Xhigh).
| Metric | GPT-5.6 Luna (Xhigh) | MiMo-V2.6-Pro | Difference |
|---|---|---|---|
| Intelligence (higher is better) | 34.6 | 46.3 | +33.8% MiMo-V2.6-Pro is 33.8% more intelligent |
| Total AA cost (lower is better) | $179.33 | $206.66 | +15.2% MiMo-V2.6-Pro is 15.2% more expensive |
| End-to-end time (lower is better) | 40.39s | 49.60s | +22.8% MiMo-V2.6-Pro is 22.8% slower |
| Price per 1M tokens (in / out) | $0.20 / $1.20 | $0.43 / $0.87 | |
| Input modalities | Text, Image | Text, Image, Speech, Video |
MiMo-V2.6-Pro vs GPT-5.6 Luna (Xhigh): 33.8% more intelligence, 15.2% more cost to run the AA benchmark, and 22.8% slower end-to-end.
Today's Pareto frontier
Against the frontier
- GPT-5.6 Luna (Xhigh) is off the frontier: at the same or lower cost, Claude Haiku 5.5 (Xhigh) scores 41.20 for $158.
- MiMo-V2.6-Pro is on today's frontier: nothing is both smarter and cheaper.
GPT-5.6 Luna (Xhigh)MiMo-V2.6-ProToday's Pareto frontierOpen-weights frontierEvery other model
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