NVIDIA vs 
SpaceXAI
Verdict
- SpaceXAI's flagship leads: Grok 4.6 at 60.5 vs Nemotron 3 Ultra 550B A55B at 55.5.
- SpaceXAI has the better model in 4 of 4 price bands.
- SpaceXAI's fastest ranked model (Grok 4.20 Multi-Agent, 347 tok/s) beats NVIDIA's (Nemotron 3.5 Super VL, 265 tok/s).
- NVIDIA publishes more open-weights models (21 vs 1).
- NVIDIA ships more often: one model every 36 days against every 41.
Best model per price band
Each provider’s highest-index model below the price ceiling. Purple marks the winner of the band.
| Price band | NVIDIA | SpaceXAI |
|---|---|---|
| Under $0.50/M | Nemotron 3 Super 120B A12B thinking 51.1$0.450/M | Grok 4.1 Fast thinking 55.6$0.275/M |
| Under $2/M | Nemotron 3 Ultra 550B A55B 55.5$1.20/M | Grok 4.20 thinking 58.4$1.56/M |
| Under $10/M | Nemotron 3 Ultra 550B A55B 55.5$1.20/M | Grok 4.6 high 60.5$3.00/M |
| Any price | Nemotron 3 Ultra 550B A55B 55.5$1.20/M | Grok 4.6 high 60.5$3.00/M |
Line-up
| Metric | NVIDIA | SpaceXAI |
|---|---|---|
| Flagship index | 55.5 | 60.5 |
| Ranked models | 11 | 15 |
| Open-weights models | 21 | 1 |
| Cheapest ranked, $/M | $0.088 | $0.275 |
| Fastest ranked, tok/s | 265 | 347 |
| Release cadence, days | 36 | 41 |
| Last release | 23 Oct 2026 | 21 Sep 2026 |
| Next expected | 13 Nov 2026 – 12 Dec 2026 | 15 Oct 2026 – 17 Nov 2026 |