Qwen3.5 397B-A17B vs Nemotron 3 Ultra 550B A55B (Arkanecloud)
Nemotron 3 Ultra 550B A55B (Arkanecloud) is cheaper on output tokens, while Nemotron 3 Ultra 550B A55B (Arkanecloud) offers a larger context window. Choose Qwen3.5 397B-A17B or Nemotron 3 Ultra 550B A55B (Arkanecloud) based on the trade-off between cost, context, and the benchmarks that matter for your use case.
| Spec | Qwen3.5 397B-A17B | Nemotron 3 Ultra 550B A55B (Arkanecloud) |
|---|---|---|
| Provider | Alibaba | Eden AI |
| Input / 1M tokens | $0.60 | $0.60 |
| Output / 1M tokens | $3.60 | $3.50 |
| Context window | 262K | 512K |
| Parameters | 397B | — |
| Open weights | Yes | Yes |
| Released | Feb 2026 | Jun 2026 |
| GPQA Diamond score | 86.4 | — |
| LMArena (Chatbot Arena) Elo score | 1437 | — |
| LMArena WebDev Elo score | 1400 | — |
| Epoch Capabilities Index score | 147 | — |
| LMArena Vision Elo score | 1262 | — |
FAQ
Is Qwen3.5 397B-A17B or Nemotron 3 Ultra 550B A55B (Arkanecloud) cheaper?
Nemotron 3 Ultra 550B A55B (Arkanecloud) is cheaper on output tokens ($3.50 vs $3.60 per 1M).
Which has the larger context window, Qwen3.5 397B-A17B or Nemotron 3 Ultra 550B A55B (Arkanecloud)?
Nemotron 3 Ultra 550B A55B (Arkanecloud) has the larger context window (512K tokens).
Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.