Comparison
pyttsx3 vs chatterbox-tts-api
Verdict
Pick pyttsx3 if pyttsx3 is an offline text-to-speech library for Python applications that can convert written text into spoken words without internet access; 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 · pyttsx3 alternatives · chatterbox-tts-api alternatives
GraphCanon updated 1w
vs
Trust & integrity
| Signal | pyttsx3 | chatterbox-tts-api |
|---|---|---|
| Maintenance | Active (7d since push) As of 3w · github_public_v1 | Slowing (232d since push) As of 1w · github_public_v1 |
| Provenance | Not a fork · Personal 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
- pyttsx3
- Offline Text To Speech synthesis for python
- chatterbox-tts-api
- Local OpenAI-compatible text-to-speech API using Chatterbox
Stars
- pyttsx3
- 2.5k
- chatterbox-tts-api
- 666
Forks
- pyttsx3
- 358
- chatterbox-tts-api
- 152
Open issues
- pyttsx3
- 90
- chatterbox-tts-api
- 16
Language
- pyttsx3
- Python
- chatterbox-tts-api
- Python
Adopt for
- pyttsx3
- pyttsx3 is an offline text-to-speech library for Python applications that can convert written text into spoken words without internet access.
- 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
- pyttsx3
- -
- chatterbox-tts-api
- -
Runtime
- pyttsx3
- -
- chatterbox-tts-api
- -
License
- pyttsx3
- Licensed under the Mozilla Public License (MPL-2.0), allowing for both free and proprietary software usage.
- 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
- pyttsx3
- Jul 22, 2026
- chatterbox-tts-api
- Dec 23, 2025
Categories
- pyttsx3
- Speech & Audio
- chatterbox-tts-api
- Speech & Audio
Trust and health
Maintenance
- pyttsx3
- Active (82%)
- chatterbox-tts-api
- Slowing (36%)
Days since push
- pyttsx3
- 7d
- chatterbox-tts-api
- 232d
Open issues (now)
- pyttsx3
- 90
- chatterbox-tts-api
- 16
Full report
- pyttsx3
- Trust report
- chatterbox-tts-api
- Trust report
Shared compatibility
- Python · pyttsx3: Python runtime · chatterbox-tts-api: Python runtime
Choose pyttsx3 if…
- License: pyttsx3 is MPL-2.0, chatterbox-tts-api is AGPL-3.0.
- Requirements: Ensure that wheel is upgraded to avoid installation errors.; On macOS, install pyobjc version >=9.0.1 as a dependency..
- Tags unique to pyttsx3: offline-tts, python, speech-synthesis, text-to-speech.
- Use pyttsx3 when you need to implement speech functionality in a Python application and have limited or unreliable internet access, since it operates completely offline.
When NOT to use pyttsx3
- Avoid using pyttsx3 if you require a wide range of voice options or natural speech synthesis quality, as it relies on built-in operating system voices which may not meet all project requirements.
- Do not use pyttsx3 in projects where high-fidelity sound output is critical, such as professional audio applications, given its focus on ease of use rather than advanced speech functionality.
Choose chatterbox-tts-api if…
- License: chatterbox-tts-api is AGPL-3.0, pyttsx3 is MPL-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 (nateshmbhat/pyttsx3) · observed Jul 29, 2026
- GitHub forks (nateshmbhat/pyttsx3) · observed Jul 29, 2026
- Last push (nateshmbhat/pyttsx3) · observed Jul 22, 2026
- License file (MPL-2.0) · observed Jul 29, 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: pyttsx3 2.5k · chatterbox-tts-api 666 (synced Jul 29, 2026).
Common questions
- What is the difference between pyttsx3 and chatterbox-tts-api?
- pyttsx3: Offline Text To Speech synthesis for python. 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 pyttsx3 over chatterbox-tts-api?
- Choose pyttsx3 over chatterbox-tts-api when License: pyttsx3 is MPL-2.0, chatterbox-tts-api is AGPL-3.0; Requirements: Ensure that wheel is upgraded to avoid installation errors.; On macOS, install pyobjc version >=9.0.1 as a dependency.; Tags unique to pyttsx3: offline-tts, python, speech-synthesis, text-to-speech; Use pyttsx3 when you need to implement speech functionality in a Python application and have limited or unreliable internet access, since it operates completely offline.
- When should I choose chatterbox-tts-api over pyttsx3?
- Choose chatterbox-tts-api over pyttsx3 when License: chatterbox-tts-api is AGPL-3.0, pyttsx3 is MPL-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 pyttsx3?
- Avoid using pyttsx3 if you require a wide range of voice options or natural speech synthesis quality, as it relies on built-in operating system voices which may not meet all project requirements. Do not use pyttsx3 in projects where high-fidelity sound output is critical, such as professional audio applications, given its focus on ease of use rather than advanced speech functionality.
- 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 pyttsx3 or chatterbox-tts-api more popular on GitHub?
- pyttsx3 has more GitHub stars (2,523 vs 666). Stars measure visibility, not whether either tool fits your constraints.
- Are pyttsx3 and chatterbox-tts-api open source?
- Yes - both are open-source projects on GitHub (pyttsx3: MPL-2.0, chatterbox-tts-api: AGPL-3.0).
- Where can I find alternatives to pyttsx3 or chatterbox-tts-api?
- GraphCanon lists graph-backed alternatives at pyttsx3 alternatives and chatterbox-tts-api alternatives (pyttsx3 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, pyttsx3 or chatterbox-tts-api?
- pyttsx3: 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 pyttsx3 and chatterbox-tts-api?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: pyttsx3 trust report; chatterbox-tts-api trust report.