Compare AI models

Specifications
ParametersThe learned values that shape how a model responds. B means billion and T means trillion. For mixture-of-experts models, the total count is larger than the number active for each token. Parameter count alone does not measure quality.
8B/49B—
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider.
128k256k
Overview
CompanyNVIDIASpaceXSI
Release dateMar 18 2025Jul 9 2025
AccessOpen WeightClosed
Model detailsView modelView model

Frequently asked questions

Llama Nemotron (Nano/Super) and Grok 4 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. Llama Nemotron (Nano/Super) shipped 113 days before Grok 4, so benchmark comparisons should account for the intervening progress.

Context windows are 128k (Llama Nemotron (Nano/Super)) vs 256k (Grok 4). Llama Nemotron (Nano/Super) is open weight, while Grok 4 is closed.

Direct benchmark comparisons are unavailable — Llama Nemotron (Nano/Super) and Grok 4 don't publish scores on any of the same benchmarks.