Piper
A fast, local open-source text-to-speech system designed to run well on small devices.
Piper is a lightweight neural text-to-speech system built for speed and low resource use: it runs well even on a Raspberry Pi. It ships voices across many languages and is a common choice in offline voice assistants.
It trades the last degree of naturalness for being genuinely fast, small, and fully local.
Where it fits
A fit for offline or embedded voice (devices, kiosks, local assistants) where speed and footprint outrank polish.
Where it does not fit
Not the choice when voice quality is front and centre of the user experience.
Alternatives to Piper
The closest options on the map, and where each fits instead.
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Kokoro Text-to-speech model
A fit when you need good-quality, self-hosted text-to-speech on limited hardware, with a permissive licence.
Unlike Piper Open weightMaturity: growing
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ElevenLabs Text-to-speech API
The pick when voice quality is part of the product experience (assistants, narration, conversational agents) and hosted is acceptable.
Unlike Piper ProprietaryNot self-hostableHosted API
Pairs with
Commonly used alongside it.
