ByteDance vs 
SpaceXAI
Verdict
- SpaceXAI's flagship leads: Grok 4.6 at 66.0 vs Dola Seed 2.0 Pro at 59.2.
- SpaceXAI has the better model in 3 of 4 price bands.
- SpaceXAI's fastest ranked model (Grok 4.20 Multi-Agent, 304 tok/s) beats ByteDance's (ByteDance-Seed/Seed-OSS-36B-Instruct, 40 tok/s).
- SpaceXAI ships more often: one model every 42 days against every 178.
Best model per price band
Each provider’s highest-index model below the price ceiling. Purple marks the winner of the band.
| Price band | ByteDance | SpaceXAI |
|---|---|---|
| Under $0.50/M | ByteDance-Seed/Seed-OSS-36B-Instruct 47.4$0.300/M | – |
| Under $2/M | ByteDance-Seed/Seed-OSS-36B-Instruct 47.4$0.300/M | Grok 4.20 thinking 59.9$1.56/M |
| Under $10/M | ByteDance-Seed/Seed-OSS-36B-Instruct 47.4$0.300/M | Grok 4.6 medium 66.0$3.00/M |
| Any price | ByteDance-Seed/Seed-OSS-36B-Instruct 47.4$0.300/M | Grok 4.6 medium 66.0$3.00/M |
Line-up
| Metric | ByteDance | SpaceXAI |
|---|---|---|
| Flagship index | 59.2 | 66.0 |
| Ranked models | 3 | 16 |
| Open-weights models | 1 | 1 |
| Cheapest ranked, $/M | $0.300 | $1.25 |
| Fastest ranked, tok/s | 40 | 304 |
| Release cadence, days | 178 | 42 |
| Last release | 14 Feb 2026 | 21 Sept 2026 |
| Next expected | 31 May 2026 – 21 Oct 2026 | 16 Oct 2026 – 18 Nov 2026 |
Data as of 21 Sept 2026. See ByteDance and SpaceXAI in full.