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Phones can't run a 2.5 GB music model, so we moved stem separation to Cloudflare Containers

This story is from 2026-10-16. It is preserved in the archive; the latest stories are on the live feed.

Our stem separator ran entirely in the browser: htdemucs exported to ONNX, onnxruntime-web, WebGPU when available. On a desktop it splits a 3-minute song in a minute or two and nothing leaves the user's computer. Then we looked at yesterday's logs. Three paying users opened the tool on phones. Zero…

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  1. 2026-10-16 08:13 · DEV Community — AI
    Phones can't run a 2.5 GB music model, so we moved stem separation to Cloudflare Containers

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