MiniMax M3.1 Flash open weights at 252GB: quantization size rundown
The 428B-parameter, 23B-active M3.1 Flash ships a roughly 252GB checkpoint, and within hours the community produced MLX 3-bit (~196GB), EXL3 (~171GB) and Q2_K GGUF (~160GB) variants, with day-zero vLLM NVFP4 support.
MiniMax released the M3.1 Flash weights today at ~252GB. Localmaxxers immediately started squeezing them. And within hours we're already at 📦 Official checkpoint + DSpark → 252GB 🍎 MLX mixed 3-bit → ~196GB ⚡ EXL3 3.06 bpw → ~171GB 🦙 Q2_K GGUF → ~160GB This is a 428B parameter model. 🧠 ~428B total / 23B active per token 📚 1M context 👁️ text + image + video input ⚡ sparse attention throughout 🚀 DSpark speculative drafter included The official 252GB checkpoint is already heavily quantized. In fact, one new GGUF conversion shows: Q2_K → 160GB Q3_K_M → 208GB Q4_K_M → 262GB vLLM says M3.1's native quantization took the checkpoint from about M3 MXFP8 → 451.5GB M3.1 → 250.1GB And vLLM shipped day-zero support with 💾 NVFP4 KV cache ⚙️ NVFP4 MoE ⚡ DSpark speculative decoding 🟢 NVIDIA Blackwell/Rubin 🔴 AMD MI350 Now let's see who actually gets this thing running well on consumer hardware. Link in ALT