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. | 7B/13B/70B | — |
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. | 4k | 2M |
| Overview | ||
| Company | Meta | SpaceXSI |
| Release date | Jul 18 2023 | Sep 19 2025 |
| Access | Open Weight | Closed |
| Model details | View model | View model |
Other comparisons
LLaMA 2vsClaude Haiku 5.5Grok 4 FastvsClaude Haiku 5.5LLaMA 2vsGPT-6.1 SolGrok 4 FastvsGPT-6.1 SolLLaMA 2vsGemini 4 ArgonGrok 4 FastvsGemini 4 ArgonLLaMA 2vsDeepSeek-V4.1-Flash-1017Grok 4 FastvsDeepSeek-V4.1-Flash-1017LLaMA 2vsMistral Large 4Grok 4 FastvsMistral Large 4LLaMA 2vsKimi K3Grok 4 FastvsKimi K3Frequently asked questions
LLaMA 2 and Grok 4 Fast don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. LLaMA 2 shipped 794 days before Grok 4 Fast, so benchmark comparisons should account for the intervening progress.
Context windows are 4k (LLaMA 2) vs 2M (Grok 4 Fast). LLaMA 2 is open weight, while Grok 4 Fast is closed.
Direct benchmark comparisons are unavailable — LLaMA 2 and Grok 4 Fast don't publish scores on any of the same benchmarks.