StyleTTS 2
No estimate
No hardware requirements for this model
This model's weights are open, but no parameter count has been published for it. Every memory and speed figure starts from that number, so we would rather show nothing than a fabricated estimate.
On record
Full specification
Everything on record for this model. Most of it describes how it was trained rather than how it runs — useful context for judging how much work went into it, and how it compares with models built at a different scale.
Origin
Who built this model, where, and when it was published.
- Organisation
- Columbia University
- Organisation type
- Academia
- Country
- United States of America
- Published
- 20 November 2023
- Authors
- Yinghao Aaron Li, Cong Han, Vinay S. Raghavan, Gavin Mischler, Nima Mesgarani
What it does
The problem areas the model was built for. A model can carry several of each.
- Domain
- Speech
- Task
- Text-to-speech (TTS), Speech synthesis
Size
How large the model is and how much data it was trained on. Parameters are the figure that decides whether it fits on a given graphics card.
- Training data
- tokens
Acoustic modules were pre-trained for 100, 50, and 30 epochs on the LJSpeech, VCTK, and LibriTTS datasets, and joint training followed for 60, 40, and 25 epochs, respectively.
The training run
What it physically took to train: which chips, how many, for how long, and what that drew from the wall.
- Training hardware
- NVIDIA A40 PCIe
- Chips used
- 4
- Power draw
- 2.4 kW
Availability
Whether you can obtain the model and run it on your own hardware, which is what decides if any of the graphics-card figures on this page apply.
- Weights
- Open — downloadable
- Model access
- Open weights (unrestricted)
- Training code
- Open source
MIT license https://github.com/yl4579/StyleTTS2
How it is classified
Labels the source dataset applies when tracking notable models, and how confident it is in the entry.
- Record confidence
- Unknown
Sources
Where this record came from and when it was last checked.
- Reference
- StyleTTS 2: Towards Human-Level Text-to-Speech through Style Diffusion and Adversarial Training with Large Speech Language Models
- Last updated
- 28 November 2025
What the numbers mean
About this model
StyleTTS 2 was published by Columbia University, in the country recorded as United States of America, during November 2023. The category the publisher falls under is academia.
It works in the domain of Speech, and is recorded as performing the task of text-to-speech (TTS), Speech synthesis.
Because its weights were released, nothing about running it depends on a provider staying available — it is yours once downloaded.
Answers
StyleTTS 2 — common questions
StyleTTS 2— who created it?
It was published by Columbia University, based in United States of America, an organisation categorised as academia.
StyleTTS 2— when was it released?
It was published in November 2023. Capability per parameter has improved considerably since, so a newer model of the same size is often the better use of the same hardware.
StyleTTS 2— what is it used for?
It works in the domain of Speech, and is recorded as handling the task of text-to-speech (TTS), Speech synthesis. These are the areas it was designed around; they describe intent rather than a hard boundary.
StyleTTS 2— where can I download it?
The weights are published, though we do not hold a repository link for it. This site calculates hardware requirements rather than hosting model files.
StyleTTS 2— what GPU do I need to run it?
We cannot say. It has open weights, but no parameter count has been published for it, and every memory and speed calculation starts from that number. We would rather show nothing than a fabricated estimate.
StyleTTS 2— is it open source?
Its weights are published, so it can be downloaded and run on your own hardware. Note that open weights is not the same as open source in the full sense — it says nothing about the training data, the training code, or the commercial terms attached.
StyleTTS 2— how many parameters does it have?
No parameter count has been published for it, which is why no memory or speed figure appears on this page.
The other direction
Looking at it from the other side?
This page starts from the model. If you already own a card and want to know everything it will run, start from the hardware instead.