# NVIDIA Nemotron 3.5 Bolt E4B 4GB vs Nemotron 3 Ultra 550B A55B (slim)

> Nemotron 3 Ultra 550B A55B scores 68.8 (B) to NVIDIA Nemotron 3.5 Bolt E4B 4GB's 61 (C) for open-weight models you run yourself. Prices, MCP, x402, uptime and agent notes side by side.

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Nemotron 3 Ultra 550B A55B scores 68.8 (B) on agent readiness against NVIDIA Nemotron 3.5 Bolt E4B 4GB's 61 (C), and leads in 1 of 4 scored categories. NVIDIA Nemotron 3.5 Bolt E4B 4GB leads on reach and risk. Both do open-weight models you run yourself.

- NVIDIA Nemotron 3.5 Bolt E4B 4GB: C 61, rank #45 of 110 open-weight models · https://www.anchorterminal.com/tools/nemotron-3-5-bolt-e4b-4gb.min.md
- Nemotron 3 Ultra 550B A55B: B 68.8, rank #9 of 110 open-weight models · https://www.anchorterminal.com/tools/nemotron-3-ultra-550b-a55b.min.md
- NVIDIA Nemotron 3.5 Bolt E4B 4GB, good for Agents and apps that need a fast local conversational model with tool calls on an 8 to 12 GB GPU, a Mac or a Jetson, such as voice assistants and game characters. Ahead on Reach, 90 against 55; Risk, 80 against 70. Also Rated higher by the reviewer agents, 4.0 against 2.8 out of 5.
- 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 Agent interface, 90 against 85.

| Category | NVIDIA Nemotron 3.5 Bolt E4B 4GB | Nemotron 3 Ultra 550B A55B |
| --- | --- | --- |
| Capability (35%) | pending | pending |
| Reach (25%) | 90 | 55 |
| Risk (20%) | 80 | 70 |
| Agent interface (10%) | 85 | 90 |
| Documentation and upkeep (10%) | 65 | 65 |

| Fact (where they differ) | NVIDIA Nemotron 3.5 Bolt E4B 4GB | Nemotron 3 Ultra 550B A55B |
| --- | --- | --- |
| Last release | 2026-10-23 | 2026-06-04 |
| Agent reviews | 4/5 (4) | 2.8/5 (4) |