Comparison
vosk-api vs chatterbox-tts-api
Verdict
Pick vosk-api if vosk-api is an offline speech recognition toolkit enabling continuous large-vocabulary transcription for over 20 languages, fitting onto small devices while offering speaker identification; 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.
Markdown twin · vosk-api alternatives · chatterbox-tts-api alternatives
GraphCanon updated 1w
vs
Trust & integrity
| Signal | vosk-api | chatterbox-tts-api |
|---|---|---|
| Maintenance | Active (27d since push) As of 3w · github_public_v1 | Slowing (232d since push) As of 1w · github_public_v1 |
| Provenance | Not a fork · Organization account As of 3w · github_public_v1 | Not a fork · Personal account As of 1w · github_public_v1 |
| OSV dependency advisories | No lockfile (source not queried) As of 1mo · osv@v1 | No lockfile (source not queried) As of 1mo · osv@v1 |
| deps.dev advisories | Not queried deps.dev@v1 | Not queried deps.dev@v1 |
| OpenSSF Scorecard | Not queried openssf-scorecard@v1 | Not queried openssf-scorecard@v1 |
Tagline
- vosk-api
- Offline speech recognition API
- chatterbox-tts-api
- Local OpenAI-compatible text-to-speech API using Chatterbox
Stars
- vosk-api
- 15k
- chatterbox-tts-api
- 666
Forks
- vosk-api
- 1.7k
- chatterbox-tts-api
- 152
Open issues
- vosk-api
- 600
- chatterbox-tts-api
- 16
Language
- vosk-api
- Jupyter Notebook
- chatterbox-tts-api
- Python
Adopt for
- vosk-api
- Vosk-api is an offline speech recognition toolkit enabling continuous large-vocabulary transcription for over 20 languages, fitting onto small devices while offering speaker identification.
- chatterbox-tts-api
- 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
- vosk-api
- -
- chatterbox-tts-api
- -
Runtime
- vosk-api
- -
- chatterbox-tts-api
- -
License
- vosk-api
- Apache-2.0
- chatterbox-tts-api
- Chatterbox-TTS-API is distributed under the AGPL-3.0 license, ensuring any modifications or derivative works must be shared openly.
Last pushed
- vosk-api
- Jul 2, 2026
- chatterbox-tts-api
- Dec 23, 2025
Categories
- vosk-api
- Speech & Audio
- chatterbox-tts-api
- Speech & Audio
Trust and health
Maintenance
- vosk-api
- Active (82%)
- chatterbox-tts-api
- Slowing (36%)
Days since push
- vosk-api
- 27d
- chatterbox-tts-api
- 232d
Open issues (now)
- vosk-api
- 600
- chatterbox-tts-api
- 16
Owner type
- vosk-api
- Organization
- chatterbox-tts-api
- User
Full report
- vosk-api
- Trust report
- chatterbox-tts-api
- Trust report
Shared compatibility
- Python · vosk-api: Python runtime · chatterbox-tts-api: Python runtime
Choose vosk-api if…
- vosk-api is primarily Jupyter Notebook; chatterbox-tts-api is Python.
- License: vosk-api is Apache-2.0, chatterbox-tts-api is AGPL-3.0.
- Tags unique to vosk-api: android, asr, deep-learning, deeplearning.
- When offline operation is required as Vosk operates without internet connection
When NOT to use vosk-api
- When the project requires real-time transcription with high accuracy, possibly surpassing Vosk's performance limitations
- For projects limited to languages not currently supported by Vosk's model lineup
- If the application necessitates a cloud solution or benefits from regular over-the-air updates and improvements
Choose chatterbox-tts-api if…
- chatterbox-tts-api is primarily Python; vosk-api is Jupyter Notebook.
- License: chatterbox-tts-api is AGPL-3.0, vosk-api is Apache-2.0.
- 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 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.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (alphacep/vosk-api) · observed Jul 30, 2026
- GitHub forks (alphacep/vosk-api) · observed Jul 30, 2026
- Last push (alphacep/vosk-api) · observed Jul 2, 2026
- License file (Apache-2.0) · observed Jul 30, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (travisvn/chatterbox-tts-api) · observed Aug 13, 2026
- GitHub forks (travisvn/chatterbox-tts-api) · observed Aug 13, 2026
- Last push (travisvn/chatterbox-tts-api) · observed Dec 23, 2025
- License file (AGPL-3.0) · observed Aug 13, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 15, 2026
GitHub stars on cards: vosk-api 15k · chatterbox-tts-api 666 (synced Jul 30, 2026).
Common questions
- What is the difference between vosk-api and chatterbox-tts-api?
- vosk-api: Offline speech recognition API. 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 vosk-api over chatterbox-tts-api?
- Choose vosk-api over chatterbox-tts-api when vosk-api is primarily Jupyter Notebook; chatterbox-tts-api is Python; License: vosk-api is Apache-2.0, chatterbox-tts-api is AGPL-3.0; Tags unique to vosk-api: android, asr, deep-learning, deeplearning; When offline operation is required as Vosk operates without internet connection.
- When should I choose chatterbox-tts-api over vosk-api?
- Choose chatterbox-tts-api over vosk-api when chatterbox-tts-api is primarily Python; vosk-api is Jupyter Notebook; License: chatterbox-tts-api is AGPL-3.0, vosk-api is Apache-2.0; 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 vosk-api?
- When the project requires real-time transcription with high accuracy, possibly surpassing Vosk's performance limitations For projects limited to languages not currently supported by Vosk's model lineup If the application necessitates a cloud solution or benefits from regular over-the-air updates and improvements
- 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 vosk-api or chatterbox-tts-api more popular on GitHub?
- vosk-api has more GitHub stars (15,013 vs 666). Stars measure visibility, not whether either tool fits your constraints.
- Are vosk-api and chatterbox-tts-api open source?
- Yes - both are open-source projects on GitHub (vosk-api: Apache-2.0, chatterbox-tts-api: AGPL-3.0).
- Where can I find alternatives to vosk-api or chatterbox-tts-api?
- GraphCanon lists graph-backed alternatives at vosk-api alternatives and chatterbox-tts-api alternatives (vosk-api markdown twin, chatterbox-tts-api markdown twin), 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 mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.
- Which is better maintained, vosk-api or chatterbox-tts-api?
- vosk-api: Active. 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 vosk-api and chatterbox-tts-api?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: vosk-api trust report; chatterbox-tts-api trust report.