Post
1456
π SignRoundV2 for LLM quantization: PTQ-level cost, QAT-level accuracy β yes, even at 2 bits.
SignRoundV2: Closing the Performance Gap in Extremely Low-Bit Post-Training Quantization for LLMs (2512.04746)
SignRoundV2: Closing the Performance Gap in Extremely Low-Bit Post-Training Quantization for LLMs (2512.04746)