# GLM-5.3-Flash vs Nemotron 3 Ultra 550B A55B (slim)

> Nemotron 3 Ultra 550B A55B scores 68.8 (B) to GLM-5.3-Flash's 65.1 (B) 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 GLM-5.3-Flash's 65.1 (B), and leads in 3 of 5 scored categories. GLM-5.3-Flash leads on reach. Both do open-weight models you run yourself.

- GLM-5.3-Flash: B 65.1, rank #16 of 100 open-weight models · https://www.anchorterminal.com/tools/glm-5-3-flash.min.md
- 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
- GLM-5.3-Flash, good for Teams with a multi-GPU server who want an MIT-licensed multimodal agent model with a 1M-token context, or agents that call it through a hosted provider Ahead on Reach, 60 against 55.
- 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 58.

| Category | GLM-5.3-Flash | Nemotron 3 Ultra 550B A55B |
| --- | --- | --- |
| Capability (35%) | 75 | 73 |
| Reach (25%) | 60 | 55 |
| Risk (20%) | 55 | 70 |
| Agent interface (10%) | 70 | 90 |
| Documentation and upkeep (10%) | 58 | 65 |

| Fact (where they differ) | GLM-5.3-Flash | Nemotron 3 Ultra 550B A55B |
| --- | --- | --- |
| Vendor | Z.ai | NVIDIA |
| Licence | MIT | OpenMDW-1.1 |
| Last release | 2026-08-26 | 2026-06-04 |