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Grok 2 vs Llama-3.1 Nemotron Ultra 253B
Comprehensive side-by-side LLM comparison
Grok 2 supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
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xAI
Grok 2, released by xAI in August 2024, is a large language model with 131K token context window and native image understanding, developed with access to real-time information from the X platform. It features multimodal input capabilities and improved reasoning over its predecessor. Grok 2 targets conversational assistants, image analysis, and real-time information retrieval tasks via the xAI API.
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NVIDIA
Llama-3.1-Nemotron-Ultra-253B-v1 is a 253-billion-parameter model from NVIDIA, derived from Meta's Llama 3.1 405B using neural architecture search (NAS) compression combined with NVIDIA's Nemotron post-training pipeline, which recovers and exceeds the base model's capability after structural compression. Released in April 2025, it supports toggling between a standard instruction mode and an extended reasoning mode via system prompt, allowing the same model to handle both rapid responses and deliberate chain-of-thought tasks. It is the flagship of the Nemotron family, available open-weight on HuggingFace and through NVIDIA NIM for enterprise inference.
7 months newer
Grok 2
xAI
2024-08-14
Llama-3.1 Nemotron Ultra 253B
NVIDIA
2025-04-07
Performance Metrics
Context window and performance specifications
Provider Availability & Performance
Available providers and their performance metrics
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Grok 2
1 providers
xAI
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Llama-3.1 Nemotron Ultra 253B
0 providers
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Grok 2
Avg Score:0.0%
Providers:1
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Llama-3.1 Nemotron Ultra 253B
Avg Score:0.0%
Providers:0