index-tts
An Industrial-Level Controllable and Efficient Zero-Shot Text-To-Speech System
Our verdict
A notable project that carries real maintenance risk. This assessment is derived from GitHub's own repository metrics on 2026-08-30, not from hands-on testing.
An Industrial-Level Controllable and Efficient Zero-Shot Text-To-Speech System. The project is written primarily in Python, published without a recognised SPDX licence, and has 23,589 stars and 2,833 forks on GitHub. 30 contributors have committed to it, and the most recent push was 2026-08-18. The latest tagged release is v2.5.0 (2026-08-13). Figures come from the GitHub API on 2026-08-30 and are refreshed daily; the score below weighs adoption, maintenance, release discipline, contributor breadth, licence clarity and issue hygiene.
Repository
- Licence
- Not declared
- Language
- Python
- Last push
- 2026-08-18
Releases
-
v2.5.0IndexTTS-2.5 -
v2.0.0IndexTTS-2.0 -
v1.5.0IndexTTS-1.5
Pros and cons
Pros
Cons
Pricing
- Free tierYes
- LicenceNot declared
- Self-hostYes, source is public
- Public price listNot published
index-tts does not publish a web price list. For consumer apps that usually means pricing appears inside the product; for enterprise tools it means talking to sales. Why we do this
Visit github.comTrends
Price points are recorded when a price moves, not on a schedule, so a flat run means the price held. Release cadence comes from GitHub releases. A series appears only once we have watched it for long enough to have more than one observation.
What users actually say
- IndexTTS2, the most realistic and expressive text-to- … Reddit · 2025
- Introducing IndexTTS-2.0: A Breakthrough in Emotionally … Reddit · 2025
We link to discussions rather than reproducing them. Opinions belong to their authors.
User reviews
No one has reviewed index-tts here yet. Reviews are moderated before they appear, and our own score is editorial and separate from user ratings, though once reviews land they do lift it.
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index-tts alternatives
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Side by side
| Tool | Our score | From | Free tier | Best for | |
|---|---|---|---|---|---|
| index-tts this page | 5.8 | - | Yes | ||
| ElevenLabs | 8.5 | $6 | Yes | Creators publishing in several languages, developers who need… | |
| GPT-SoVITS | 6.2 | - | Yes | ||
| ChatTTS | 5.5 | - | Yes | ||
| Descript | 5.5 | $16 | Yes | ||
| Krisp | 5.2 | $8 | - | ||
| Coqui TTS | 5.1 | - | Yes |
Questions
Is index-tts free?
Yes. index-tts advertises a free tier on its own site.
How much does index-tts cost?
index-tts does not publish a web price list. For consumer apps that usually means pricing appears inside the product; for enterprise tools it means talking to sales.
Is index-tts open source?
Yes. index-tts is a public repository released under Not declared. You can self-host or inspect the source directly.
How is index-tts scored here?
index-tts scores 5.8 out of 10. That comes from a desk review of public evidence, which is capped at 8.5 out of 10: public pricing, documentation, maintenance signals and how much we could actually verify. Affiliate relationships are excluded from scoring entirely. The full rubric is published on our methodology page.