Living systematic review
LLM quantization
Compressing LLM weights and activations to low bit-widths (4-bit and below) for cheaper inference, while preserving quality — outlier handling, rotation, and post-training quantization.
97 papers151 critique receipts1,451 benchmark resultsupdated Jun 18, 2026
Most-superseded baselines
Ranked by how many distinct papers critique or beat each method — the standard baselines newer work routinely measures against.
- 1GPTQ
GPTQ: Accurate Post-Training Quantization for Generative Pre-trained Transformers
13 critique · 28 beaten on benchmarks
- 2AWQin GPTQ
AWQ: Activation-aware Weight Quantization for LLM Compression and Acceleration
9 critique · 15 beaten on benchmarks
- 3SmoothQuant
SmoothQuant: Accurate and Efficient Post-Training Quantization for Large Language Models
13 critique · 9 beaten on benchmarks
- 4QuaRotin SmoothQuant
QuaRot: Outlier-Free 4-Bit Inference in Rotated LLMs
7 critique · 12 beaten on benchmarks
- 5OmniQuantin GPTQ
OmniQuant: Omnidirectionally Calibrated Quantization for Large Language Models
2 critique · 14 beaten on benchmarks
- 6RTN
2 critique · 10 beaten on benchmarks
- 7SpinQuantin SmoothQuant
3 critique · 8 beaten on benchmarks
- 8AQLMin GPTQ
3 critique · 5 beaten on benchmarks
- 9QuIPin GPTQ
QuIP: 2-Bit Quantization of Large Language Models With Guarantees
3 critique · 4 beaten on benchmarks
- 10SVDQuantin SmoothQuant
SVDQuant: Absorbing Outliers by Low-Rank Components for 4-Bit Diffusion Models
3 critique · 4 beaten on benchmarks
- 11PB-LLMin GPTQ
PB-LLM: Partially Binarized Large Language Models
4 critique · 3 beaten on benchmarks
- 12FlatQuantin SmoothQuant
FlatQuant: Flatness Matters for LLM Quantization
2 critique · 4 beaten on benchmarks
The competition
Methods that fight on the same benchmarks cluster into distinct sub-problems.
SmoothQuant33 methods
SmoothQuant · QuaRot · SpinQuant · SVDQuant · FlatQuant · AffineQuant
FlexRound6 methods
FlexRound · LLM.int8() · ZeroQuant · SplitQuantV2 · LRQ · AdpQ
AQ-SGD3 methods
AQ-SGD · TAH-Quant (Tile-wise Adaptive Hadamard Quantization) · AMAQ
QServe3 methods
QServe · APEX4 · LiquidGEMM
The frontier
Recent methods not yet superseded in the knowledge base.
- Jun 7, 2026
- Jun 5, 2026
- Jun 4, 2026
- Jun 3, 2026
- May 29, 2026
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- May 11, 2026
- May 11, 2026