HiFi-GAN (reference)

by Jungil Kong (research)

GAN-based neural vocoder reference — fast and high-quality.

TL;DR

GAN-based neural vocoder reference — fast and high-quality.

Best for researchers building TTS pipelines that need a fast, high-quality vocoder back-end. Pricing: free (MIT).

Category
Open source
License
—
Stars
—
Last push
—
Pricing
free (MIT)
Platforms
Linux

What it is

HiFi-GAN (2020) is the GAN-based vocoder used in most modern open-source TTS pipelines. MIT-licensed. Often paired with FastSpeech 2 or Glow-TTS as the back-end. Consent posture: vocoder architecture only.

Best for: Researchers building TTS pipelines that need a fast, high-quality vocoder back-end.
Watch out for: Vocoder only — needs to be paired with a Mel-spectrogram TTS front-end like FastSpeech 2 or Glow-TTS.

Install / use

git clone https://github.com/jik876/hifi-gan

Features

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

HiFi-GAN (reference) vs Whipscribe

FeatureHiFi-GAN (reference)Whipscribe
CategoryOpen sourceTranscription APIs
Pricingfree (MIT)free beta
Speaker diarization—Yes
Word timestamps—Yes
Streaming—No
Languages199
PlatformsLinuxWeb, API, MCP

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