# MiniMax Debuts M2.1, an MoE Model Optimized with FP8

> The new Mixture of Experts model from the Chinese AI firm uses 8-bit floating-point precision for a smaller memory footprint and faster inference.

Published by The Open Weights on Dec 20, 2025. Canonical: https://theopenweights.com/news/minimax-m2-1-cvvd

## Key facts

- Company: MiniMax
- Model: MiniMax-M2.7
- Version: M2.1
- Category: Text / LLM
- Modalities: Text / LLM
- License: Other (Open weights, commercial use allowed)
- Context window: 197K tokens
- Architecture: MiniMaxM2ForCausalLM
- Precision: FP8
- Weights size: 230.1 GB
- Significance: minor
- Published: 2025-12-20
- Last verified: 2026-06-17
- Hugging Face: https://huggingface.co/MiniMaxAI/MiniMax-M2.1
- Canonical URL: https://theopenweights.com/news/minimax-m2-1-cvvd

AI research company MiniMax has released MiniMax-M2.1, a new large language model built on a Mixture of Experts (MoE) architecture. Unlike many contemporary models that use 16-bit precision, M2.1 is notable for its use of FP8 weights, a strategic choice aimed at significantly boosting computational efficiency.

## Precision and Performance

The adoption of 8-bit floating-point (FP8) precision is a key trend in making large models more practical to deploy. By representing model weights with fewer bits, FP8 reduces the model's memory footprint and can accelerate inference speed on compatible hardware. This approach allows powerful MoE models, which are often very large, to run on less demanding infrastructure, though it can introduce a trade-off with numerical precision.

As a Mixture of Experts model, M2.1 is designed for efficiency at its core. MoE architectures process inputs by routing them to specialized "expert" subnetworks, activating only a fraction of the model's total parameters for any given task. This sparse activation, combined with the FP8 data type, positions M2.1 as a model focused on efficient scaling.

The model is available for download and experimentation on the [Hugging Face Hub](https://huggingface.co/MiniMaxAI/MiniMax-M2.1), but it comes with a custom license. The terms restrict usage to non-commercial and research purposes only, prohibiting commercial deployment and the redistribution of the model or any derivatives.

## Get the model

- [Hugging Face](https://huggingface.co/MiniMaxAI/MiniMax-M2.1)

## Sources

- [MiniMaxAI/MiniMax-M2.1](https://huggingface.co/MiniMaxAI/MiniMax-M2.1) — Hugging Face, Dec 20, 2025

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Source: The Open Weights (https://theopenweights.com/). Aggregated and written by Claude, curated by humans. Cite as: "MiniMax Debuts M2.1, an MoE Model Optimized with FP8", The Open Weights, Dec 20, 2025, https://theopenweights.com/news/minimax-m2-1-cvvd