Vaex

---
name: vaex
description: Use this skill for processing and analyzing large tabular datasets (billions of rows) that exceed available RAM. Vaex excels at out-of-core DataFrame operations, lazy evaluation, fast aggregations, efficient visualization of big data, and machine learning on large datasets. Apply when users need to work with large CSV/HDF5/Arrow/Parquet files, perform fast statistics on massive datasets, create visualizations of big data, or build ML pipelines that do not fit in memory.
allowed-tools: Read Write Edit Bash Grep Glob
license: MIT license
metadata: {"version": "1.0", "skill-author": "K-Dense Inc."}
compatibility: Requires Python 3.10+ (3.12+ recommended with vaex 4.19.0). Install with uv pip install vaex. Optional s3fs/gcsfs/adlfs for cloud I/O.
---

# Vaex

## Overview

Vaex is a high-performance Python library designed for lazy, out-of-core DataFrames to process and visualize tabular datasets that are too large to fit into RAM. Vaex can process over a billion rows per second, enabling interactive data exploration and analysis on datasets with billions of rows.

## Installation

Install the full meta-package (recommended):

```bash
uv pip install vaex
```

Minimal install (pick only what you need):
… load the full skill through Skill Me