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. | — | 6B |
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. | 2M | 2k |
| Overview | ||
| Company | SpaceXSI | Z.ai |
| Release date | Sep 19 2025 | Mar 14 2023 |
| Access | Closed | Open Weight |
| Model details | View model | View model |
Other comparisons
Grok 4 FastvsClaude Haiku 5.5ChatGLM-6BvsClaude Haiku 5.5Grok 4 FastvsGPT-6.1 SolChatGLM-6BvsGPT-6.1 SolGrok 4 FastvsGemini 4 ArgonChatGLM-6BvsGemini 4 ArgonGrok 4 FastvsMuse Spark OpenChatGLM-6BvsMuse Spark OpenGrok 4 FastvsDeepSeek-V4.1-Flash-1017ChatGLM-6BvsDeepSeek-V4.1-Flash-1017Grok 4 FastvsMistral Large 4ChatGLM-6BvsMistral Large 4Frequently asked questions
Grok 4 Fast and ChatGLM-6B don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. ChatGLM-6B shipped 920 days before Grok 4 Fast, so benchmark comparisons should account for the intervening progress.
Context windows are 2M (Grok 4 Fast) vs 2k (ChatGLM-6B). Grok 4 Fast is closed, while ChatGLM-6B is open weight.
Direct benchmark comparisons are unavailable — Grok 4 Fast and ChatGLM-6B don't publish scores on any of the same benchmarks.