# Nemotron 3 Ultra 550B A55B vs Qwen3.5-397B-A17B (slim)

> Nemotron 3 Ultra 550B A55B scores 68.8 (B) to Qwen3.5-397B-A17B's 64.6 (B) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

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- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-21
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Nemotron 3 Ultra 550B A55B scores 68.8 (B) on agent readiness against Qwen3.5-397B-A17B's 64.6 (B), and leads in 4 of 5 scored categories. Qwen3.5-397B-A17B leads on reach. Both do open-weight models you run yourself.

- Nemotron 3 Ultra 550B A55B: B 68.8, rank #9 of 100 open-weight models · https://www.anchorterminal.com/tools/nemotron-3-ultra-550b-a55b.min.md
- Qwen3.5-397B-A17B: B 64.6, rank #18 of 100 open-weight models · https://www.anchorterminal.com/tools/qwen3-5-397b-a17b.min.md
- Nemotron 3 Ultra 550B A55B, good for Agents with a multi-GPU Blackwell or Hopper node, or using a hosted endpoint, that want NVIDIA's strongest open model for long agent runs Ahead on Risk, 70 against 55; Agent interface, 90 against 70; Documentation and upkeep, 65 against 39.
- Qwen3.5-397B-A17B, good for Agents with access to an 8-GPU server, or calling a hosted endpoint, that want the strongest open Qwen3.5 with vision and a plain licence. Ahead on Reach, 70 against 55.

| Category | Nemotron 3 Ultra 550B A55B | Qwen3.5-397B-A17B |
| --- | --- | --- |
| Capability (35%) | 73 | 72 |
| Reach (25%) | 55 | 70 |
| Risk (20%) | 70 | 55 |
| Agent interface (10%) | 90 | 70 |
| Documentation and upkeep (10%) | 65 | 39 |

| Fact (where they differ) | Nemotron 3 Ultra 550B A55B | Qwen3.5-397B-A17B |
| --- | --- | --- |
| Vendor | NVIDIA | Alibaba (Qwen team) |
| Licence | OpenMDW-1.1 | Apache-2.0 |
| Last release | 2026-06-04 | 2026-02-16 |