--- title: "index-tts vs dc_tts" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/index-tts-index-tts-vs-kyubyong-dc-tts" tools: ["index-tts-index-tts", "kyubyong-dc-tts"] --- # index-tts vs dc_tts *GraphCanon updated Jul 30, 2026* ## Verdict Pick index-tts if 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; pick dc_tts if dc_tts is a text-to-speech model based on TensorFlow and requires specific version dependencies. [index-tts](https://github.com/index-tts/index-tts) reports 22k GitHub stars, 2.7k forks, and 369 open issues, last pushed Jul 14, 2026. [dc_tts](https://github.com/Kyubyong/dc_tts) has 1.2k stars, 360 forks, and 68 open issues, last pushed Apr 14, 2023. Figures are from public GitHub metadata via [index-tts's repository](https://github.com/index-tts/index-tts) and [dc_tts's repository](https://github.com/Kyubyong/dc_tts). | | [index-tts](/tools/index-tts-index-tts.md) | [dc_tts](/tools/kyubyong-dc-tts.md) | | --- | --- | --- | | Tagline | A Breakthrough in Emotionally Expressive and Duration-Controlled Auto-Regressive Zero-Shot Text-to-Speech | A TensorFlow Implementation of DC-TTS | | Stars | 22,239 | 1,156 | | Forks | 2,709 | 360 | | Open issues | 369 | 68 | | Language | Python | Python | | Adopt for | 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. | dc_tts is a text-to-speech model based on TensorFlow and requires specific version dependencies. | | Persona | - | - | | Runtime | - | - | | License | Other | Apache-2.0 | | Categories | Speech & Audio | Speech & Audio | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [index-tts](/tools/index-tts-index-tts.md) | [dc_tts](/tools/kyubyong-dc-tts.md) | | --- | --- | --- | | Maintenance | Active (82%) | Dormant (18%) | | Days since push | 14d | 1203d | | Open issues (now) | 369 | 68 | | Full report | [trust report](/tools/index-tts-index-tts/trust.md) | [trust report](/tools/kyubyong-dc-tts/trust.md) | ## Decision facts: index-tts - **Adopt for:** 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. - **Runtime:** unknown ## Decision facts: dc_tts - **Requirements:** Depends on TensorFlow >=1.3 and has compatibility issues with updated APIs for `tf.contrib.layers.layer_norm`.; Requires Python packages like NumPy, librosa, tqdm, matplotlib, and scipy. - **Adopt for:** dc_tts is a text-to-speech model based on TensorFlow and requires specific version dependencies. ## Choose when ### Choose index-tts if… - License: index-tts is Other, dc_tts is Apache-2.0. - Tags unique to index-tts: bigvgan, cross-lingual, indextts, text-to-speech. - 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 dc_tts if… - License: dc_tts is Apache-2.0, index-tts is Other. - Requirements: Depends on TensorFlow >=1.3 and has compatibility issues with updated APIs for `tf.contrib.layers.layer_norm`.; Requires Python packages like NumPy, librosa, tqdm, matplotlib, and scipy.. - Tags unique to dc_tts: speech, speech-to-text, tensorflow. - dc_tts is a text-to-speech model based on TensorFlow and requires specific version dependencies. ## When NOT to use index-tts - 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. ## When NOT to use dc_tts - Last GitHub push was 1229 days ago (dormant maintenance, Apr 14, 2023). Validate activity before betting a new project on dc_tts. ## Common questions ### What is the difference between index-tts and dc_tts? index-tts: A Breakthrough in Emotionally Expressive and Duration-Controlled Auto-Regressive Zero-Shot Text-to-Speech. dc_tts: A TensorFlow Implementation of DC-TTS. See the comparison table for live GitHub stats and shared categories. ### When should I choose index-tts over dc_tts? Choose index-tts over dc_tts when License: index-tts is Other, dc_tts is Apache-2.0; Tags unique to index-tts: bigvgan, cross-lingual, indextts, text-to-speech; Use IndexTTS when precise speech duration control is required, such as for professional video dubbing projects where audio-visual synchronization needs to be exact. ### When should I choose dc_tts over index-tts? Choose dc_tts over index-tts when License: dc_tts is Apache-2.0, index-tts is Other; Requirements: Depends on TensorFlow >=1.3 and has compatibility issues with updated APIs for `tf.contrib.layers.layer_norm`.; Requires Python packages like NumPy, librosa, tqdm, matplotlib, and scipy.; Tags unique to dc_tts: speech, speech-to-text, tensorflow; dc_tts is a text-to-speech model based on TensorFlow and requires specific version dependencies. ### When should I avoid index-tts? 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. ### When should I avoid dc_tts? Last GitHub push was 1229 days ago (dormant maintenance, Apr 14, 2023). Validate activity before betting a new project on dc_tts. ### Is index-tts or dc_tts more popular on GitHub? index-tts has more GitHub stars (22,239 vs 1,156). Stars measure visibility, not whether either tool fits your constraints. ### Are index-tts and dc_tts open source? Yes - both are open-source projects on GitHub (index-tts: Other, dc_tts: Apache-2.0). ### Where can I find alternatives to index-tts or dc_tts? GraphCanon lists graph-backed alternatives at [index-tts alternatives](/tools/index-tts-index-tts/alternatives) and [dc_tts alternatives](/tools/kyubyong-dc-tts/alternatives) ([index-tts markdown twin](/tools/index-tts-index-tts/alternatives.md), [dc_tts markdown twin](/tools/kyubyong-dc-tts/alternatives.md)), ranked by typed relationship edges rather than popularity votes. ### Is there a machine-readable version of this comparison? Yes. The markdown twin at [this comparison](/compare/index-tts-index-tts-vs-kyubyong-dc-tts.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, index-tts or dc_tts? index-tts: Active. dc_tts: Dormant. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance. ### Where are the full trust reports for index-tts and dc_tts? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [index-tts trust report](/tools/index-tts-index-tts/trust); [dc_tts trust report](/tools/kyubyong-dc-tts/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=index-tts-index-tts`](/api/graphcanon/graph?tool=index-tts-index-tts) - LLM index: [/llms.txt](/llms.txt) - Full corpus: [/llms-full.txt](/llms-full.txt) _GraphCanon - The knowledge graph for AI development. https://www.graphcanon.com/_