Comprehensive side-by-side LLM comparison
Llama 3.1 Nemotron Ultra 253B v1 leads with 20.0% higher average benchmark score. Grok-2 supports multimodal inputs. Overall, Llama 3.1 Nemotron Ultra 253B v1 is the stronger choice for coding tasks.
xAI
Grok 2 was developed as the second generation of xAI's language model family, designed to provide enhanced reasoning, knowledge, and conversational abilities. Built with architectural improvements and expanded training, it represents a significant advancement in xAI's model capabilities.
NVIDIA
Llama 3.1 Nemotron Ultra 253B was developed as NVIDIA's largest Nemotron variant, designed to provide maximum capability through extensive customization of large-scale foundations. Built with 253 billion parameters and NVIDIA's specialized training, it represents the flagship offering in the Nemotron family.
7 months newer

Grok-2
xAI
2024-08-13

Llama 3.1 Nemotron Ultra 253B v1
NVIDIA
2025-04-07
Context window and performance specifications
Average performance across 1 common benchmarks

Grok-2

Llama 3.1 Nemotron Ultra 253B v1
Llama 3.1 Nemotron Ultra 253B v1
2023-12-01
Available providers and their performance metrics

Grok-2
xAI

Llama 3.1 Nemotron Ultra 253B v1

Grok-2

Llama 3.1 Nemotron Ultra 253B v1

Grok-2

Llama 3.1 Nemotron Ultra 253B v1