--- title: "TTS vs TensorFlowTTS" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/coqui-ai-tts-vs-tensorspeech-tensorflowtts" tools: ["coqui-ai-tts", "tensorspeech-tensorflowtts"] --- # TTS vs TensorFlowTTS *GraphCanon updated Jul 11, 2026* ## Verdict Pick TTS when license: TTS is MPL-2.0, TensorFlowTTS is Apache-2.0; pick TensorFlowTTS when license: TensorFlowTTS is Apache-2.0, TTS is MPL-2.0. [TTS](http://coqui.ai) reports 46k GitHub stars, 6.2k forks, and 4 open issues, last pushed Aug 16, 2024. [TensorFlowTTS](https://tensorspeech.github.io/TensorFlowTTS/) has 4.0k stars, 799 forks, and 2 open issues, last pushed Jul 5, 2024. Figures are from public GitHub metadata via [TTS's repository](https://github.com/coqui-ai/TTS) and [TensorFlowTTS's repository](https://github.com/TensorSpeech/TensorFlowTTS). | | [TTS](/tools/coqui-ai-tts.md) | [TensorFlowTTS](/tools/tensorspeech-tensorflowtts.md) | | --- | --- | --- | | Tagline | 🐸💬 - a deep learning toolkit for Text-to-Speech, battle-tested in research and production | :stuck_out_tongue_closed_eyes: TensorFlowTTS: Real-Time State-of-the-art Speech Synthesis for Tensorflow 2 (supported including English, French, Korean, Chinese, German and Easy to adapt for other lan | | Stars | 45,737 | 3,991 | | Forks | 6,152 | 799 | | Open issues | 4 | 2 | | Language | Python | Python | | Adopt for | - | - | | Persona | - | - | | Runtime | - | - | | License | MPL-2.0 | Apache-2.0 | | Categories | Inference & Serving, Model Training, Speech & Audio | Model Training, Speech & Audio | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [TTS](/tools/coqui-ai-tts.md) | [TensorFlowTTS](/tools/tensorspeech-tensorflowtts.md) | | --- | --- | --- | | Days since push | 693d | 736d | | Open issues (now) | 4 | 2 | | Security scan | 137 low (137 low) | No lockfile | | Full report | [trust report](/tools/coqui-ai-tts/trust.md) | [trust report](/tools/tensorspeech-tensorflowtts/trust.md) | ## Shared compatibility - **Python**: [TTS](/tools/coqui-ai-tts.md) - Python runtime; [TensorFlowTTS](/tools/tensorspeech-tensorflowtts.md) - Python runtime ## Choose when ### Choose TTS if… - License: TTS is MPL-2.0, TensorFlowTTS is Apache-2.0. - Tags unique to TTS: deep-learning, glow-tts, hifigan, multi-speaker-tts. - Also covers Inference & Serving. ### Choose TensorFlowTTS if… - License: TensorFlowTTS is Apache-2.0, TTS is MPL-2.0. - Tags unique to TensorFlowTTS: chinese-tts, fastspeech, fastspeech2, german-tts. - Leaner open-issue backlog (2). ## When NOT to use TTS - Last GitHub push was 695 days ago (dormant maintenance, Aug 16, 2024). Validate activity before betting a new project on TTS. - Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic. - Model Training: Try prompting and RAG first; fine-tuning is the answer to style/format, not missing knowledge. ## When NOT to use TensorFlowTTS - Last GitHub push was 737 days ago (dormant maintenance, Jul 5, 2024). Validate activity before betting a new project on TensorFlowTTS. - Model Training: Try prompting and RAG first; fine-tuning is the answer to style/format, not missing knowledge. ## Common questions ### What is the difference between TTS and TensorFlowTTS? TTS: 🐸💬 - a deep learning toolkit for Text-to-Speech, battle-tested in research and production. TensorFlowTTS: :stuck_out_tongue_closed_eyes: TensorFlowTTS: Real-Time State-of-the-art Speech Synthesis for Tensorflow 2 (supported including English, French, Korean, Chinese, German and Easy to adapt for other lan. See the comparison table for live GitHub stats and shared categories. ### When should I choose TTS over TensorFlowTTS? Choose TTS over TensorFlowTTS when License: TTS is MPL-2.0, TensorFlowTTS is Apache-2.0; Tags unique to TTS: deep-learning, glow-tts, hifigan, multi-speaker-tts; Also covers Inference & Serving. ### When should I choose TensorFlowTTS over TTS? Choose TensorFlowTTS over TTS when License: TensorFlowTTS is Apache-2.0, TTS is MPL-2.0; Tags unique to TensorFlowTTS: chinese-tts, fastspeech, fastspeech2, german-tts; Leaner open-issue backlog (2). ### When should I avoid TTS? Last GitHub push was 695 days ago (dormant maintenance, Aug 16, 2024). Validate activity before betting a new project on TTS. Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic. Model Training: Try prompting and RAG first; fine-tuning is the answer to style/format, not missing knowledge. ### When should I avoid TensorFlowTTS? Last GitHub push was 737 days ago (dormant maintenance, Jul 5, 2024). Validate activity before betting a new project on TensorFlowTTS. Model Training: Try prompting and RAG first; fine-tuning is the answer to style/format, not missing knowledge. ### Is TTS or TensorFlowTTS more popular on GitHub? TTS has more GitHub stars (45,737 vs 3,991). Stars measure visibility, not whether either tool fits your constraints. ### Are TTS and TensorFlowTTS open source? Yes - both are open-source projects on GitHub (TTS: MPL-2.0, TensorFlowTTS: Apache-2.0). ### Where can I find alternatives to TTS or TensorFlowTTS? GraphCanon lists graph-backed alternatives at [TTS alternatives](/tools/coqui-ai-tts/alternatives) and [TensorFlowTTS alternatives](/tools/tensorspeech-tensorflowtts/alternatives) ([TTS markdown twin](/tools/coqui-ai-tts/alternatives.md), [TensorFlowTTS markdown twin](/tools/tensorspeech-tensorflowtts/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/coqui-ai-tts-vs-tensorspeech-tensorflowtts.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, TTS or TensorFlowTTS? TTS: Dormant. TensorFlowTTS: 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 TTS and TensorFlowTTS? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [TTS trust report](/tools/coqui-ai-tts/trust); [TensorFlowTTS trust report](/tools/tensorspeech-tensorflowtts/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=coqui-ai-tts`](/api/graphcanon/graph?tool=coqui-ai-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/_