---
id: pr-vllm-22339
repo: vllm-project/vllm
pr: 22339
title: '[gpt-oss] flashinfer mxfp4'
author: zyongye
date: '2025-08-06'
url: https://github.com/vllm-project/vllm/pull/22339
source_category: upstream-code
architectures:
- sm100
tags:
- fp4
- kernel-fusion
- moe
- quantization
techniques:
- kernel-fusion
hardware_features:
- fp4
kernel_types:
- moe
- quantization
languages:
- python
captured_at: '2026-04-27'
status: merged
merge_sha: 31f09c615f4f067dba765ce5fe7d00d880212a6d
inclusion_reason: kernel file changes
changed_paths:
- vllm/envs.py
- vllm/model_executor/layers/fused_moe/layer.py
- vllm/model_executor/layers/quantization/__init__.py
- vllm/model_executor/layers/quantization/mxfp4.py
- vllm/model_executor/layers/quantization/utils/mxfp4_utils.py
head_ref_oid: 357a11b4c4ff39cdef1e50f9008d4591bb56319e
artifact_dir: evidence/pull-bundles/vllm/gh-22339
---
# [gpt-oss] flashinfer mxfp4

- Repository: `vllm-project/vllm`
- PR: [22339](https://github.com/vllm-project/vllm/pull/22339)
- Decision: `kernel file changes`
- Reason: kernel file changes

## Changed Paths

- `vllm/envs.py`
- `vllm/model_executor/layers/fused_moe/layer.py`
- `vllm/model_executor/layers/quantization/__init__.py`
- `vllm/model_executor/layers/quantization/mxfp4.py`
- `vllm/model_executor/layers/quantization/utils/mxfp4_utils.py`

## Evidence Bundle

`evidence/pull-bundles/vllm/gh-22339`
