Reflex Open Sources XY: A Rust-Backed Super-Fast Python Charting Library That Keeps 100 Million Point Charts Interactive

Kwon Crash

Published Aug 4, 2026, 2:04 PM UTC

Source: AISource
- Reflex dropped XY, a Rust-backed Python charting lib that renders 100M points in ~0.08s. Plotly chokes at 50M; XY treats data like unsealed cargo, slicing it into binary buffers for WebGL2. It’s alpha v0.0.1, so don’t put it on a critical path unless you enjoy watching your dashboard crash harder than a leveraged long during a flash crash. For quant teams drowning in tick data, this is the only way to keep hover states from lagging behind the market. Stop trying to plot everything and start decimating. Where's my cut?