@PrajwalTomar_: WAIT. This is actually insane. You know how charts start freezing and lagging the moment your app or notebook has real …

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Summary

Reflex open-sourced xy, a high-performance Python charting library built in Rust that renders 10 million data points in 5.4 milliseconds by only drawing visible points, offering a direct replacement for Matplotlib, Plotly, and Bokeh.

WAIT. This is actually insane. You know how charts start freezing and lagging the moment your app or notebook has real data in them? That just became a solved problem. Reflex open-sourced xy, a new charting library for Python built in Rust. It plots 10 million data points in 5.4 milliseconds. I read that number three times before I believed it. The trick is actually simple. Old charting tools try to draw every single data point, even the ones your eyes could never see. xy only draws what fits on your screen. That one idea makes it fast every single time, and you can still zoom into any point and read its exact value. Live data streams straight into your charts, and your developer (or your AI agent) can swap it in with one line. Fully open source. pip install xy is all it takes. If you're building anything with data, this is the new default. Go test it yourself, the repo is public. We are so early.
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Cached at: 07/28/26, 08:39 PM

WAIT. This is actually insane.

You know how charts start freezing and lagging the moment your app or notebook has real data in them? That just became a solved problem.

Reflex open-sourced xy, a new charting library for Python built in Rust. It plots 10 million data points in 5.4 milliseconds. I read that number three times before I believed it.

The trick is actually simple. Old charting tools try to draw every single data point, even the ones your eyes could never see. xy only draws what fits on your screen. That one idea makes it fast every single time, and you can still zoom into any point and read its exact value.

Live data streams straight into your charts, and your developer (or your AI agent) can swap it in with one line.

Fully open source. pip install xy is all it takes. If you’re building anything with data, this is the new default. Go test it yourself, the repo is public.

We are so early.

Nikhil Rao (@nikhi1rao): Introducing xy by @getreflex: an extremely performant Python charting library, written in Rust.

xy is a direct replacement for Matplotlib, Plotly, Bokeh, and other Python charting libraries.

At 10 million points, xy renders 523× faster than Plotly. We used it to render the

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