index-tts
A Breakthrough in Emotionally Expressive and Duration-Controlled Auto-Regressive Zero-Shot Text-to-Speech
GraphCanon updated Sep 20, 2026 · GitHub synced Sep 20, 2026
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Decision brief
IndexTTS is an industrial-level controllable zero-shot text-to-speech system that excels in duration control and emotionally expressive speech generation using autoregressive models.
Good fit when
- Use IndexTTS when precise speech duration control is required, such as for professional video dubbing projects where audio-visual synchronization needs to be exact.
- Choose it for applications needing independent adjustment of timbre and emotional tone without the need for extensive customization per speaker or emotion.
Avoid when
- Avoid using IndexTTS in scenarios where minimal latency is critical, as its autoregressive generation mode may introduce processing delays compared to non-autoregressive methods.
- Do not use if you require support for a wide variety of languages beyond what the system's zero-shot capabilities cover.
Observed Jul 16, 2026 · Source: enrich:decision_facts
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Maintenance and security
Full trust report- Maintenance
- Steady (33d since push)
- As of Sep 20, 2026
- Provenance
- Not a fork · Personal account
- As of Sep 20, 2026
- Security (OSV)
- No lockfile
- As of Jul 11, 2026
Public GitHub metadata and optional OSV scans. Signals, not a guarantee. Trust methodology.
Install
pip install index-ttsSimilar tools
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Evidence and technical details
Sourced facts, taxonomy, compatibility claims, README excerpt, and machine-readable endpoints.
Overview
IndexTTS2 proposes a novel method for controlling the duration of synthesized speech in autoregressive models, enhancing their flexibility and usability in applications like video dubbing.
Capability facts
- CLI
- CLI entrypoint
Source: pyproject.toml:[project.scripts] · Sep 20, 2026
- Languages
- python
Source: github.language+pyproject.toml · Sep 20, 2026
Categories
Compatibility
Sourced claims from the README excerpt - not unsourced marketing copy.
Source: README excerpt (regex_v1, Sep 20, 2026)
versions of Python and all required dependencies.Source link
Tags
README
2. Install Dependencies We use uv to manage the project's dependency environment. It is required for a reliable installation: This automatically creates a project directory and installs the correct versions of Python and all required dependencies. If the download is slow, use a l...
For agents
This page has a .md twin and JSON over the API.