NVIDIA Llama 3.1 Nemotron Ultra 253B v1 vs Cohere Command 2X
Detailed comparison for LLMs
On Guardion's LLM vulnerability Benchmark, Cohere Command 2X is the more secure of the two: Llama 3.1 Nemotron Ultra 253B v1 scores 40.0% and Command 2X scores 39.4% on attack success rate (ASR) (lower is better). One or both scores are estimated from public safety evaluations pending a Guardion benchmark run.
Head-to-Head Overview
Command 2X is the overall winner in this comparison!
Attack Success Rate (lower is safer)
ASR for NVIDIA Llama 3.1 Nemotron Ultra 253B v1 vs Cohere Command 2X. Green marks the safer model on each metric. Only the overall score is available for estimated models.
Overall (ASR)
TAP Attack Method (ASR)
Crescendo Attack Method (ASR)
Zero-Shot (ASR)
Key Highlights
- Cohere Command 2X has a lower Overall (ASR).
- Cohere Command 2X has a lower Zero-Shot (ASR).
Security Profile
Outward is better on every axis.
Frequently asked questions
Is NVIDIA Llama 3.1 Nemotron Ultra 253B v1 or Cohere Command 2X more secure?
On Guardion's LLM vulnerability Benchmark, Cohere Command 2X is the more secure of the two: Llama 3.1 Nemotron Ultra 253B v1 scores 40.0% and Command 2X scores 39.4% on attack success rate (ASR) (lower is better). One or both scores are estimated from public safety evaluations pending a Guardion benchmark run.
What is the attack success rate (ASR) of Llama 3.1 Nemotron Ultra 253B v1 vs Command 2X?
Llama 3.1 Nemotron Ultra 253B v1 has a 40.0% ASR and Command 2X has a 39.4% ASR — the share of adversarial prompts that succeed across zero-shot, TAP, and Crescendo attacks. Lower is safer.
How were Llama 3.1 Nemotron Ultra 253B v1 and Command 2X tested?
Both were red-teamed with the HarmBench framework across zero-shot, TAP (Tree of Attacks with Pruning), and Crescendo multi-turn attacks, scored by Attack Success Rate.