MiniMax Reportedly Plans a 2.7 Trillion Parameter Open-Source Model
The Information reports the Chinese lab is preparing M3 Pro, which would be the largest Chinese AI model yet — and freely downloadable, possibly as early as Q3.
Chinese AI lab MiniMax is working on a language model with 2.7 trillion parameters and plans to release it as open source, The Information reports, citing two people familiar with the plans. Parameters are the internal settings a model learns during training — very roughly, more parameters mean more capacity for knowledge and complex reasoning. At 2.7 trillion, the model would be larger than any Chinese AI model currently on the market, and far larger than MiniMax’s current flagship M3, which has 428 billion.
Internally the project is called M3 Pro, though the name could change, and a release could reportedly come as early as the third quarter. “Open source” here means the model’s weights — the trained model itself — would be freely downloadable, the way MiniMax, DeepSeek, Zhipu, and Moonshot AI have released their recent models. That doesn’t mean you’d run it at home: a model this size needs serious data-center hardware. It means companies and researchers could use it, inspect it, and build on it without paying per-token API prices.
What’s behind it? Scale as a statement. Chinese open models have spent the year winning developers on price and “good enough” quality — recent analyses put Chinese models at 30 percent or more of the traffic on some Western developer platforms. A 2.7 trillion parameter release would test something different: whether open models can compete at the very top end, not just the value tier. Two honest caveats. First, this is a report from unnamed sources, not an announcement — treat the details as provisional. Second, parameter count alone doesn’t determine quality; training data, methods, and efficiency matter as much, and huge models are expensive to run even when they’re free to download. There’s also a wildcard: Beijing is reportedly considering export controls on top Chinese AI models, which could complicate an open release of exactly this kind.
What this means for you: For most people: nothing yet, and that’s fine. If you follow the industry, this is a signal worth logging — the open-versus-closed race is no longer about small models nipping at the leaders’ heels. If MiniMax ships M3 Pro as described, the world’s largest openly available model would come from China, and the price pressure on Western labs would ratchet up another notch.
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