Mistral Small 4
Mistral Small 4 is an open-weight language model from Mistral AI, released on March 16, 2026.
- Developer
- Mistral AI
- Released
- March 16, 2026
- Total parameters
- 119B
- Active parameters per token
- 6.5B
- Architecture
- MoE
- Context window
- 256K
- Input
- Text, image
- License
- Apache 2.0
- Commercial use
- Yes
- Official weights, GB
- 120.9 GB
- Hugging Face repository
- huggingface.co
- Checked on
Mistral Small 4 is a mixture-of-experts model with 119B total parameters, of which 6.5B are active for each token. Mistral AI lists a context window of 256K tokens. The model accepts text and image input. The weights are released under Apache 2.0, which allows commercial use.
The official weights on Hugging Face take about 121 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
- 119B
- Active parameters, billions
- 6.5B
- Context window, tokens
- 256K
- License type
- Apache 2.0
- License conditions
- Apache 2.0, with no user or revenue limits.
- Weights precision
- FP8 + BF16
- Official quantized or alternative versions
- mistralai/Mistral-Small-4-119B-2603-NVFP4; mistralai/Mistral-Small-4-119B-2603-eagle (speculative-decoding head)
- License text
- apache.org
- Sources
Page URL Hugging Face model card https://huggingface.co/mistralai/Mistral-Small-4-119B-2603/raw/main/README.md Hugging Face weights index https://huggingface.co/mistralai/Mistral-Small-4-119B-2603/raw/main/model.safetensors.index.json Hugging Face API https://huggingface.co/api/models/mistralai/Mistral-Small-4-119B-2603?expand=safetensors mistral.ai announcement https://mistral.ai/news/mistral-small-4/
Questions
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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.