Compare AI models
| Specifications | ||
ParametersA rough measure of how big the model is. More parameters usually means more capable and more expensive to run, though it is a poor guide on its own — a smaller, newer model often beats a larger, older one. | 253B | — |
| Benchmarks | ||
LiveCodeBenchCompetitive coding — Coding problems published so recently the AI can't have seen them in training — a contamination-free test of raw programming skill. Higher is better. | 66.3% | 74.8% |
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better. | 76% | — |
| Overview | ||
| Company | NVIDIA | SpaceXAI |
| Release date | Apr 8 2025 | Feb 17 2025 |
| Access | Open Weight | Closed |
| Model details | View model | View model |
Other comparisons
Llama Nemotron Ultra 253BvsClaude Haiku 5.5Grok 3 minivsClaude Haiku 5.5Llama Nemotron Ultra 253BvsGPT-6.1 SolGrok 3 minivsGPT-6.1 SolLlama Nemotron Ultra 253BvsGemini 4 ArgonGrok 3 minivsGemini 4 ArgonLlama Nemotron Ultra 253BvsMuse Spark 1.3Grok 3 minivsMuse Spark 1.3Llama Nemotron Ultra 253BvsDeepSeek-V4.1-FlashGrok 3 minivsDeepSeek-V4.1-FlashLlama Nemotron Ultra 253BvsMistral Large 4Grok 3 minivsMistral Large 4Frequently asked questions
Grok 3 mini leads Llama Nemotron Ultra 253B on 1 of the 1 benchmark they both report (LiveCodeBench). Grok 3 mini shipped 50 days before Llama Nemotron Ultra 253B, so benchmark comparisons should account for the intervening progress.
Llama Nemotron Ultra 253B is open weight, while Grok 3 mini is closed.
On LiveCodeBench, Grok 3 mini leads at 74.8% vs Llama Nemotron Ultra 253B at 66.3%.