Reflex Open Sources XY: A Rust-Backed Super-Fast Python Charting Library That Keeps 100 Million Point Charts Interactive
Reflex AI has released XY, an Apache-2.0 Python charting library for interactive 2D visualization. Most Python charting stacks create one drawable object per row, so past a few hundred thousand points, render, hover, and zoom degrade. XY moves the work into a native Rust core, sends the browser typed binary buffers instead of JSON, and draws with WebGL2. In the terms of the benchmark, XY holds 0.071 s at 10,000 points and 0.081 s at 100 million. It ships as pip install xy and requires Python 3.
Reflex AI released XY, a Python charting library that uses a Rust core and WebGL2 rendering to keep interactive charts responsive even with 100 million data points. Traditional Python charting libraries create one drawable object per row, which causes rendering and interaction to degrade with large datasets, but XY instead sends typed binary buffers to the browser and applies screen-bounded representations. The library is currently at version 0.0.1 alpha and best suits internal analytics, notebooks, and fields like quantitative finance and genomics where large point counts are common.
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