NVIDIA Mellotron

by NVIDIA

Multispeaker prosody TTS — historical NVIDIA release.

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TL;DR

Best for reference for prosody-controlled TTS. Pricing: free.

Category
Open source
License
BSD-3-Clause
Stars
★ 870
Last push
2023-07-22
Pricing
free
Platforms
Linux

What it is

The Mellotron paper code. BSD-3-Clause.

Best for: Reference for prosody-controlled TTS.
Watch out for: Superseded by Mixer-TTS, FastPitch++.

Install / use

git clone https://github.com/NVIDIA/mellotron

Features

Speaker diarizationNo
Word-level timestampsYes
Streaming / real-timeNo
Languages supported1
HIPAA eligibleNo

Links

GitHub repo ↗

NVIDIA Mellotron vs Whipscribe

FeatureNVIDIA MellotronWhipscribe
CategoryOpen sourceTranscription APIs
Pricingfree$4–$24 one-time packs (credits never expire) · $2 single unlock · 60 min free on signup
Speaker diarizationNoYes
Word timestampsYesYes
StreamingNoNo
Languages199
PlatformsLinuxWeb, API, MCP

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