NVIDIA vs 
OpenAI
Verdict
- OpenAI's flagship leads: GPT-6 Astra at 70.6 vs Nemotron 3 Ultra 550B A55B at 58.3.
- OpenAI has the better model in 4 of 4 price bands.
- NVIDIA's fastest ranked model (nemotron-3-nano-30b-a3b, 231 tok/s) beats OpenAI's (GPT-5.4 mini, 218 tok/s).
- NVIDIA publishes more open-weights models (32 vs 4).
- NVIDIA ships more often: one model every 26 days against every 26.
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 | OpenAI |
|---|---|---|
| Under $0.50/M | Gemma-4-31B-IT 55.4$0.205/M | GPT-5.6 Luna xhigh 59.3$0.450/M |
| Under $2/M | Nemotron 3 Ultra 550B A55B 58.3$1.00/M | GPT-5.6 Luna xhigh 59.3$0.450/M |
| Under $10/M | Nemotron 3 Ultra 550B A55B 58.3$1.00/M | GPT-5.6 Sol high 68.0$8.00/M |
| Any price | Nemotron 3 Ultra 550B A55B 58.3$1.00/M | GPT-6 Astra max 70.6$22.00/M |
Line-up
| Metric | NVIDIA | OpenAI |
|---|---|---|
| Flagship index | 58.3 | 70.6 |
| Ranked models | 19 | 38 |
| Open-weights models | 32 | 4 |
| Cheapest ranked, $/M | $0.063 | $0.085 |
| Fastest ranked, tok/s | 231 | 218 |
| Release cadence, days | 26 | 26 |
| Last release | 11 Aug 2026 | 3 Sept 2026 |
| Next expected | 26 Aug 2026 – 16 Sept 2026 | 18 Sept 2026 – 9 Oct 2026 |