Open research on LLM quantization. Weight quant, KV cache quant, activation quant — anything sub-fp16. KLD-first quality measurement (PPL secondary, because PPL is easy to game and weakly correlated with downstream quality at low bitrates). Welcomes contributions from any quantization technique: GPTQ-family (GPTQ, GPTAQ, SmoothQuant), AWQ, lattice (E8, D₁₂, Leech, NestQuant), trellis (TCQ, QTIP, PolarQuant), product VQ (AQLM, GPTVQ), finetune-recovery (PV-Tuning, EfficientQAT, RoSTE, NVIDIA QAD), Hadamard rotations (QuaRot, SpinQuant, FWHT). Goal: a shared landscape of what works, what fails, what composes, and what is left to try — across model architectures, bit budgets, and hardware.