Text to speechSpeech to text

Higgs Audio

Expressive speech and dialogue synthesis with voice cloning, plus recognition models. Version 3 of the synthesis supports about 100 languages, including Russian, but is non-commercial.

Developer
Boson AI, USA
First release
Jul 2025
Latest release
Jun 2026
Sizes
about 3B – 8B
License
Commercial use with conditionsHiggs Audio v2 uses the Boson Community License based on the Llama 3 license (above 100,000 users a year a separate license is needed); v3 recognition models are Apache 2.0; higgs-tts-3 is non-commercial only
Russian
Supported
Ready-made builds
GGUF
Running
On your own serverNeeds a GPU
Industries
Media and production, Marketing and content
Deploy on your server Hugging Face GitHub

What it does

  • Expressive video voiceover
  • Voicing dialogues
  • Voice cloning
  • Speech transcription

Where it is used

MediaGamesMarketing

Hardware requirements

LaptopLaptop or regular PC, up to 8 GB of VRAM — smaller versions
no versions
1 GPUOne GPU with 16–80 GB — mid-size versions
fits
ClusterServer with several GPUs — flagship versions
no versions

Versions

  1. Higgs TTS 3 (4B)
  2. Higgs Audio v3 8B STT v2
  3. Higgs Audio v3 STT
  4. Higgs Audio v2 (3B)

How to run it

On your own serverWeights are downloaded from Hugging Face and served with vLLM (load and API) or llama.cpp (modest hardware). The model then runs in a closed network with no per-request fees.Hugging Face
How much hardware you needCalculate the VRAM for the model size, context length and number of concurrent requests.Open the hardware calculator

I can set this up end to end: pick the model size, deploy it on your server and connect it to your systems. Quantization compresses a model so it takes less video memory and runs on more modest hardware. Answers change slightly, so quality is checked on your own examples.

Frequently asked questions

Can Higgs Audio be used in a commercial project?

With conditions. License: Higgs Audio v2 uses the Boson Community License based on the Llama 3 license (above 100,000 users a year a separate license is needed); v3 recognition models are Apache 2.0; higgs-tts-3 is non-commercial only. Restrictions vary — region, company revenue, attribution requirements. Have a lawyer check the terms before a commercial launch.

What hardware does Higgs Audio need?

At minimum: One GPU with 16–80 GB — mid-size versions. Without a GPU the model is not practical. You can calculate the exact VRAM for your model size and context in the hardware calculator.

Does Higgs Audio support Russian?

Yes, Russian is listed on the model card.

Where can I download Higgs Audio and what does it cost?

The Higgs Audio weights are open and free to download. You only pay for the hardware it runs on and for the setup. Source links are at the bottom of this page.

How I deploy it for clients

  1. SelectionI pick the model size for your task and hardware and test it on your examples.
  2. DeploymentI deploy it on your server or in a closed network and provide an API.
  3. Fine-tuningI fine-tune it on your data (LoRA) or connect a knowledge base — whichever is cheaper for the task.
  4. IntegrationI connect it to your CRM, ERP, bot, website or team chat and set up monitoring.

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Text to speechMOSS-TTS / MOSS-TTSDOpenMOSS (Fudan University) · ChinaCommercial use allowed

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DetailsSpeech to textVibeVoiceMicrosoft · USACommercial use allowed

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DetailsText to speechFish Speech / OpenAudioFish Audio · USA / ChinaNon-commercial only

Speech synthesis with voice cloning and emotion control in 80+ languages, including Russian. Quality is close to paid services, but the weights are for research only.

Details

Source: huggingface.co/bosonai/higgs-tts-3-4b. Data checked against the model card on 22 Sep 2026. Have a lawyer review the license before commercial launch.