Granite 4.1 8B LLMON Preview
Granite 4.1 8B LLMON Preview is an open-weight language model from IBM, released on November 12, 2026. IBM describes it as an experimental preview.
- Developer
- IBM
- Released
- November 12, 2026
- Total parameters
- 8B
- Active parameters per token
- 8B
- Architecture
- Dense
- Context window
- 128K
- Input
- Text
- License
- Apache 2.0
- Commercial use
- Yes
- Official weights, GB
- 17.6 GB
- Hugging Face repository
- huggingface.co
- Checked on
Granite 4.1 8B LLMON Preview is a dense model with 8B parameters, fine-tuned from the Granite 4.1 8B base model. Instead of a conventional chat template it reads prompts written in LLMON (LLM Object Notation), a markup that wraps instructions, data, documents and tool results in separate blocks and states which instruction applies to which input; the bundled chat template converts ordinary messages into this format. The model configuration sets a context window of 131,072 tokens. The model takes text input. The weights are released under the Apache 2.0 license, which allows commercial use.
The official BF16 weights on Hugging Face take about 17.6 GB. Running the model needs at least that much memory across GPUs and system RAM, plus room for the context cache; quantized versions need less.
- Total parameters, billions
- 8B
- Active parameters, billions
- 8B
- Context window, tokens
- 131.07K
- License type
- Apache 2.0
- License conditions
- Apache 2.0: keep the license text and notices; includes a patent grant.
- Weights precision
- BF16
- License text
- apache.org
- Sources
Page URL Hugging Face model card https://huggingface.co/ibm-granite/granite-4.1-8b-llmon-preview/raw/main/README.md Hugging Face model config https://huggingface.co/ibm-granite/granite-4.1-8b-llmon-preview/raw/main/config.json Hugging Face file list https://huggingface.co/api/models/ibm-granite/granite-4.1-8b-llmon-preview/tree/main IBM Granite blog https://huggingface.co/blog/ibm-granite/llmon-an-llm-native-markup-language-now-in-granite
Questions
What license does Granite 4.1 8B LLMON Preview use?
Can I use Granite 4.1 8B LLMON Preview commercially?
How much memory does Granite 4.1 8B LLMON Preview need?
What context window does Granite 4.1 8B LLMON Preview have?
Sources
Every figure comes from the developer’s model card, license text and official announcements, and from the model’s Hugging Face repository metadata. Each model page lists its sources and the date they were checked; the register is rechecked every week.