--- title: "RealtimeSTT vs chatterbox-tts-api" type: "comparison" canonical_url: "https://www.graphcanon.com/compare/koljab-realtimestt-vs-travisvn-chatterbox-tts-api" tools: ["koljab-realtimestt", "travisvn-chatterbox-tts-api"] --- # RealtimeSTT vs chatterbox-tts-api *GraphCanon updated Aug 13, 2026* ## Verdict Pick RealtimeSTT if realtimeSTT is an efficient Python library for low-latency speech-to-text transcription with advanced voice activity detection and wake word support; pick chatterbox-tts-api if chatterbox-TTS-API is a locally hosted Python-based text-to-speech API with capabilities similar to ElevenLabs, offering an OpenAI-compatible interface for generating voice-cloned speech. [RealtimeSTT](https://github.com/KoljaB/RealtimeSTT) reports 10k GitHub stars, 850 forks, and 147 open issues, last pushed Jun 12, 2026. [chatterbox-tts-api](https://chatterboxtts.com) has 666 stars, 152 forks, and 16 open issues, last pushed Dec 23, 2025. Figures are from public GitHub metadata via [RealtimeSTT's repository](https://github.com/KoljaB/RealtimeSTT) and [chatterbox-tts-api's repository](https://github.com/travisvn/chatterbox-tts-api). | | [RealtimeSTT](/tools/koljab-realtimestt.md) | [chatterbox-tts-api](/tools/travisvn-chatterbox-tts-api.md) | | --- | --- | --- | | Tagline | Realtime speech-to-text library with advanced voice activity detection and wake word activation | Local OpenAI-compatible text-to-speech API using Chatterbox | | Stars | 10,014 | 666 | | Forks | 850 | 152 | | Open issues | 147 | 16 | | Language | Python | Python | | Adopt for | RealtimeSTT is an efficient Python library for low-latency speech-to-text transcription with advanced voice activity detection and wake word support. | Chatterbox-TTS-API is a locally hosted Python-based text-to-speech API with capabilities similar to ElevenLabs, offering an OpenAI-compatible interface for generating voice-cloned speech. | | Persona | - | - | | Runtime | - | - | | License | MIT License allows free use and modification, provided original copyright notice and license is retained in all copies or substantial portions of the software. | Chatterbox-TTS-API is distributed under the AGPL-3.0 license, ensuring any modifications or derivative works must be shared openly. | | Categories | Speech & Audio | Speech & Audio | ## Trust and health _Sourced signals - not a safety guarantee. No winner column._ | | [RealtimeSTT](/tools/koljab-realtimestt.md) | [chatterbox-tts-api](/tools/travisvn-chatterbox-tts-api.md) | | --- | --- | --- | | Maintenance | Steady (60%) | Slowing (36%) | | Days since push | 47d | 232d | | Open issues (now) | 147 | 16 | | Full report | [trust report](/tools/koljab-realtimestt/trust.md) | [trust report](/tools/travisvn-chatterbox-tts-api/trust.md) | ## Shared compatibility - **Python**: [RealtimeSTT](/tools/koljab-realtimestt.md) - Python runtime; [chatterbox-tts-api](/tools/travisvn-chatterbox-tts-api.md) - Python runtime ## Decision facts: RealtimeSTT - **Adopt for:** RealtimeSTT is an efficient Python library for low-latency speech-to-text transcription with advanced voice activity detection and wake word support. - **License detail:** MIT License allows free use and modification, provided original copyright notice and license is retained in all copies or substantial portions of the software. ## Decision facts: chatterbox-tts-api - **Requirements:** Requires a local setup environment that supports CUDA for optimal performance; Docker can simplify deployment. - **Adopt for:** Chatterbox-TTS-API is a locally hosted Python-based text-to-speech API with capabilities similar to ElevenLabs, offering an OpenAI-compatible interface for generating voice-cloned speech. - **License detail:** Chatterbox-TTS-API is distributed under the AGPL-3.0 license, ensuring any modifications or derivative works must be shared openly. ## Choose when ### Choose RealtimeSTT if… - License: RealtimeSTT is MIT, chatterbox-tts-api is AGPL-3.0. - Tags unique to RealtimeSTT: python, realtime, speech-to-text. - RealtimeSTT ships Docker support for self-hosted deployment. - You need a tool that supports voice activity detection and instant transcription upon waking words in real-time. ### Choose chatterbox-tts-api if… - License: chatterbox-tts-api is AGPL-3.0, RealtimeSTT is MIT. - Requirements: Requires a local setup environment that supports CUDA for optimal performance; Docker can simplify deployment.. - Tags unique to chatterbox-tts-api: ai, chatgpt, chatterbox, cuda. - When you need a self-hosted solution that mirrors the functionality of ElevenLabs or other proprietary TTS services and requires compatibility with existing ecosystems like Open WebUI or AnythingLLM. ## When NOT to use RealtimeSTT - Your speech-to-text solution requires support for programming languages other than Python. - You cannot meet the requirement to have Python 3.11 or newer installed in your development environment. ## When NOT to use chatterbox-tts-api - If you require integrations specific to ElevenLabs' proprietary voice models as Chatterbox-TTS-API, despite its capabilities, does not directly support their unique voice libraries. - For users needing a fully managed service without the complexities of local deployment and maintenance, like that offered by cloud-based TTS providers. ## Common questions ### What is the difference between RealtimeSTT and chatterbox-tts-api? RealtimeSTT: Realtime speech-to-text library with advanced voice activity detection and wake word activation. chatterbox-tts-api: Local OpenAI-compatible text-to-speech API using Chatterbox. See the comparison table for live GitHub stats and shared categories. ### When should I choose RealtimeSTT over chatterbox-tts-api? Choose RealtimeSTT over chatterbox-tts-api when License: RealtimeSTT is MIT, chatterbox-tts-api is AGPL-3.0; Tags unique to RealtimeSTT: python, realtime, speech-to-text; RealtimeSTT ships Docker support for self-hosted deployment; You need a tool that supports voice activity detection and instant transcription upon waking words in real-time. ### When should I choose chatterbox-tts-api over RealtimeSTT? Choose chatterbox-tts-api over RealtimeSTT when License: chatterbox-tts-api is AGPL-3.0, RealtimeSTT is MIT; Requirements: Requires a local setup environment that supports CUDA for optimal performance; Docker can simplify deployment.; Tags unique to chatterbox-tts-api: ai, chatgpt, chatterbox, cuda; When you need a self-hosted solution that mirrors the functionality of ElevenLabs or other proprietary TTS services and requires compatibility with existing ecosystems like Open WebUI or AnythingLLM. ### When should I avoid RealtimeSTT? Your speech-to-text solution requires support for programming languages other than Python. You cannot meet the requirement to have Python 3.11 or newer installed in your development environment. ### When should I avoid chatterbox-tts-api? If you require integrations specific to ElevenLabs' proprietary voice models as Chatterbox-TTS-API, despite its capabilities, does not directly support their unique voice libraries. For users needing a fully managed service without the complexities of local deployment and maintenance, like that offered by cloud-based TTS providers. ### Is RealtimeSTT or chatterbox-tts-api more popular on GitHub? RealtimeSTT has more GitHub stars (10,014 vs 666). Stars measure visibility, not whether either tool fits your constraints. ### Are RealtimeSTT and chatterbox-tts-api open source? Yes - both are open-source projects on GitHub (RealtimeSTT: MIT, chatterbox-tts-api: AGPL-3.0). ### Where can I find alternatives to RealtimeSTT or chatterbox-tts-api? GraphCanon lists graph-backed alternatives at [RealtimeSTT alternatives](/tools/koljab-realtimestt/alternatives) and [chatterbox-tts-api alternatives](/tools/travisvn-chatterbox-tts-api/alternatives) ([RealtimeSTT markdown twin](/tools/koljab-realtimestt/alternatives.md), [chatterbox-tts-api markdown twin](/tools/travisvn-chatterbox-tts-api/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/koljab-realtimestt-vs-travisvn-chatterbox-tts-api.md) mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers. ### Which is better maintained, RealtimeSTT or chatterbox-tts-api? RealtimeSTT: Steady. chatterbox-tts-api: Slowing. 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 RealtimeSTT and chatterbox-tts-api? GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: [RealtimeSTT trust report](/tools/koljab-realtimestt/trust); [chatterbox-tts-api trust report](/tools/travisvn-chatterbox-tts-api/trust). --- **Machine-readable endpoints** - JSON: [`/api/graphcanon/graph?tool=koljab-realtimestt`](/api/graphcanon/graph?tool=koljab-realtimestt) - 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/_