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Dev tools · January 9, 2023

Tortoise TTS as an at-cost open-source pay-per-second API

Tortoise TTS is the best TTS available today. We built an open-source, at cost, pay per second API for it. The quality of intonation it generates is unparalleled, and we hope our at-cost API will make it easier for people to build on top! This allows folks to run via a single API call - it costs $0.03/query. The WAV file is downloadable, we apply no restrictions. We're open-sourcing all our work — we made Tortoise run 30% faster, and have more improvements coming. If you're keen to contribute we can help with ideas, pointers, compute and data; just DM us. Our fork with the improvements…

Tortoise TTS as an at-cost open-source pay-per-second API launched on January 9, 2023 with 5 votes, #1,950 of 3,901 launches that month and more than 50% of that year's launches. The site was still online in September 2026, 3 years on.

What it does

@sidroopdaska, @tetmin, and I just built an open-source, at cost, pay per second API for Tortoise TTS. 🐢 (by @neonbjb) is the best TTS available today.

In the maker’s words, at launch

Tortoise TTS is the best TTS available today. We built an open-source, at cost, pay per second API for it. The quality of intonation it generates is unparalleled, and we hope our at-cost API will make it easier for people to build on top! This allows folks to run via a single API call - it costs $0.03/query. The…

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