---
id: pr-vllm-35448
repo: vllm-project/vllm
pr: 35448
title: '[Quant][Feature] Support online MXFP8 quantization for MoE and dense models'
author: EdalatiAli
date: '2026-03-16'
url: https://github.com/vllm-project/vllm/pull/35448
source_category: upstream-code
architectures:
- sm100
tags:
- fp8
- kernel-fusion
- moe
- quantization
techniques:
- kernel-fusion
hardware_features:
- fp8
kernel_types:
- moe
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: e5b807607c8493155e6eccd665772d4c19b2114e
inclusion_reason: kernel file changes
changed_paths:
- tests/models/quantization/test_mxfp8.py
- vllm/model_executor/layers/fused_moe/experts/trtllm_fp8_moe.py
- vllm/model_executor/layers/fused_moe/oracle/fp8.py
- vllm/model_executor/layers/fused_moe/oracle/mxfp8.py
- vllm/model_executor/layers/fused_moe/utils.py
- vllm/model_executor/layers/quantization/__init__.py
- vllm/model_executor/layers/quantization/modelopt.py
- vllm/model_executor/layers/quantization/mxfp8.py
- vllm/model_executor/layers/quantization/utils/flashinfer_utils.py
- vllm/model_executor/layers/quantization/utils/quant_utils.py
head_ref_oid: 6b532f1fc03307fca8239952aabf67d2fcdbec86
artifact_dir: evidence/pull-bundles/vllm/gh-35448
---
# [Quant][Feature] Support online MXFP8 quantization for MoE and dense models

- Repository: `vllm-project/vllm`
- PR: [35448](https://github.com/vllm-project/vllm/pull/35448)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `tests/models/quantization/test_mxfp8.py`
- `vllm/model_executor/layers/fused_moe/experts/trtllm_fp8_moe.py`
- `vllm/model_executor/layers/fused_moe/oracle/fp8.py`
- `vllm/model_executor/layers/fused_moe/oracle/mxfp8.py`
- `vllm/model_executor/layers/fused_moe/utils.py`
- `vllm/model_executor/layers/quantization/__init__.py`
- `vllm/model_executor/layers/quantization/modelopt.py`
- `vllm/model_executor/layers/quantization/mxfp8.py`
- `vllm/model_executor/layers/quantization/utils/flashinfer_utils.py`
- `vllm/model_executor/layers/quantization/utils/quant_utils.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-35448`
