MiniMax M3.1 Flash: developer tools for teams with their own GPUs
Official site link, not an affiliate link. We do not have an approved referral link for MiniMax M3.1 Flash.
MiniMax M3.1 Flash helps you build software by starting with an open-weight multimodal model from MiniMax for coding, agents and computer use. It is best for teams with their own GPUs who want an open multimodal model for coding and agent work. MiniMax describes M3.1 Flash as a native multimodal mixture-of-experts model for coding, agentic workflows, computer use and cybersecurity.
What it does
MiniMax describes M3.1 Flash as a native multimodal mixture-of-experts model for coding, agentic workflows, computer use and cybersecurity. It builds on MiniMax M3 with sparse attention throughout, quantization-aware training and DSpark speculative decoding. MiniMax reports 73.7% on DeepSWE v1.1 and 61.7 on OSWorld 2.0 (vendor-reported).
Official site:www.minimax.io.
Editorial note
MiniMax M3.1 Flash is an open-weight mixture-of-experts model. MiniMax’s model card lists about 428B total parameters with 23B active per token, text, image and video inputs, and up to 1M tokens of context.
Who it’s for
- For: Teams with their own GPUs who want an open multimodal model for coding and agent work.
- Not ideal for: people without serious GPU hardware who just want a chat app.
Key use cases
- Build apps & code
What you can do with it
- Free access: The weights are a free download on Hugging Face; check the license on the model card before commercial use. This matters when you want to test before you pay.
- MiniMax API and Agent plan: Hosted options listed on the model card. This matters when the free tier is not enough.
- Help documentation: Official pricing and product pages at www.minimax.io. This matters when you set it up yourself.
How to use MiniMax M3.1 Flash: step-by-step tutorial
Five to eight steps from the account to a first useful result. Where the official guide names a control, the step uses that name. Where it does not, the step stays general.
- Open minimax.io and create an account on the free plan. You can reach a first result before you choose a paid plan.
- Read the license and model card on Hugging Face.
- Download it with: hf download MiniMaxAI/MiniMax-M3.1-Flash
- Serve it with SGLang or vLLM using the recipes linked on the model card.
- Use temperature 1.0 and top_p 0.95, as MiniMax recommends.
- Set reasoning_effort (low to max) in the chat template to match the task.
These steps follow the official guide: MiniMax M3.1 Flash model card (Hugging Face).
Frequently asked questions
Is MiniMax M3.1 Flash free?
The weights are a free download on Hugging Face, checked October 25, 2026. Check the license before commercial use.
How big is it?
MiniMax’s model card lists about 428B total parameters, with 23B active per token.
What inputs does it take?
Text, image and video inputs with text output, per the model card.
How long is the context?
Up to 1,000,000 tokens, per MiniMax; usable length depends on your GPU memory.
Pricing
Prices checked on the official pricing page.
- Open weights
-
Free download
Run it yourself with SGLang, vLLM or TokenSpeed, per the model card
- MiniMax API and Agent
-
See MiniMax
Hosted options listed on the model card
- Limits: Large hardware needed to self-host; benchmarks are vendor-reported.
- Plans change: vendors update limits and prices; confirm on the official page before you buy.
Facts
- Access
- Ongoing free plan
- Paid plans from
- Free weights
- Checked
- Category
- Category: Development tools (31 in the library).
- On the record
- The weights are a free download on Hugging Face; check the license on the model card before commercial use.