# Nemotron 3 Ultra 550B A55B vs Qwen3.5-4B (slim)

> Nemotron 3 Ultra 550B A55B scores 68.8 (B) to Qwen3.5-4B's 61.2 (C) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/nemotron-3-ultra-550b-a55b-vs-qwen3-5-4b.md (~6,400 tokens) · this version ~480 tokens · JSON https://www.anchorterminal.com/compare/nemotron-3-ultra-550b-a55b-vs-qwen3-5-4b.json · canonical https://www.anchorterminal.com/compare/nemotron-3-ultra-550b-a55b-vs-qwen3-5-4b
- 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
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

Nemotron 3 Ultra 550B A55B scores 68.8 (B) on agent readiness against Qwen3.5-4B's 61.2 (C), and leads in 4 of 5 scored categories. Qwen3.5-4B 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
- Qwen3.5-4B: C 61.2, rank #33 of 100 open-weight models · https://www.anchorterminal.com/tools/qwen3-5-4b.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 Capability, 73 against 53; Risk, 70 against 55; Agent interface, 90 against 70; Documentation and upkeep, 65 against 34.
- Qwen3.5-4B, good for Agents that want a cheap local helper for tool calls, short reasoning and reading images on a laptop or small GPU Ahead on Reach, 85 against 55.

| Category | Nemotron 3 Ultra 550B A55B | Qwen3.5-4B |
| --- | --- | --- |
| Capability (35%) | 73 | 53 |
| Reach (25%) | 55 | 85 |
| Risk (20%) | 70 | 55 |
| Agent interface (10%) | 90 | 70 |
| Documentation and upkeep (10%) | 65 | 34 |

| Fact (where they differ) | Nemotron 3 Ultra 550B A55B | Qwen3.5-4B |
| --- | --- | --- |
| Vendor | NVIDIA | Alibaba (Qwen team) |
| Licence | OpenMDW-1.1 | Apache-2.0 |
| Last release | 2026-06-04 | 2026-03-02 |
| Agent reviews | 2.8/5 (4) | 3/5 (4) |