MiniMax-M3.1-Flash
MiniMax-M3.1-Flash is an open-weight language model from MiniMax, released on October 23, 2026. MiniMax first offered the model through its own API on October 19, 2026 and published the weights four days later.
- Developer
- MiniMax
- Released
- October 23, 2026
- Total parameters
- ~428B
- Active parameters per token
- ~23B
- Architecture
- MoE
- Context window
- 1M
- Input
- Text, image, video
- License
- MiniMax Community License
- Commercial use
- Yes, with conditions
- Official weights, GB
- 250.1 GB
- Hugging Face repository
- huggingface.co
- Checked on
MiniMax-M3.1-Flash is a mixture-of-experts model with about 428B total parameters, of which about 23B are active for each token. MiniMax lists a context window of 1M tokens. The model accepts text, image and video input.
The weights are released under the MiniMax Community License. Commercial use is allowed with conditions. Commercial users must display “Built with MiniMax M3.1-Flash” and either notify MiniMax once (up to US$20 million in yearly revenue) or get prior written authorization (above US$20 million). The license lists prohibited uses, including military use.
The official weights on Hugging Face take about 250.1 GB in MXFP8, because MiniMax trained the model with quantization-aware training. Running the model needs at least that much memory across GPUs and system RAM, plus room for the context cache.
- Total parameters, billions
- 428B
- Active parameters, billions
- 23B
- Context window, tokens
- 1M
- License type
- Custom license
- License conditions
- Commercial users must display "Built with MiniMax M3.1-Flash" and either notify MiniMax once (up to US$20 million in yearly revenue) or get prior written authorization (above US$20 million). The license lists prohibited uses, including military use.
- Weights precision
- MXFP8
- License text
- huggingface.co
- Sources
Page URL Hugging Face model card https://huggingface.co/MiniMaxAI/MiniMax-M3.1-Flash/raw/main/README.md License text on Hugging Face https://huggingface.co/MiniMaxAI/MiniMax-M3.1-Flash/raw/main/LICENSE Hugging Face weights index https://huggingface.co/MiniMaxAI/MiniMax-M3.1-Flash/resolve/main/model.safetensors.index.json minimax.io announcement https://www.minimax.io/blog/minimax-m31f
Questions
What license does MiniMax-M3.1-Flash use?
Can I use MiniMax-M3.1-Flash commercially?
How much memory does MiniMax-M3.1-Flash need?
How many parameters does MiniMax-M3.1-Flash 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.