Comparison
OuteTTS vs chatterbox-tts-api
Verdict
Pick OuteTTS if outeTTS is a text-to-speech tool for Python that interfaces with its model library and integrates llama.cpp; 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 · OuteTTS alternatives · chatterbox-tts-api alternatives
GraphCanon updated 1w
vs
Trust & integrity
| Signal | OuteTTS | chatterbox-tts-api |
|---|---|---|
| Maintenance | Slowing (128d 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 | Published findings 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
- OuteTTS
- Interface for OuteTTS models using Python
- chatterbox-tts-api
- Local OpenAI-compatible text-to-speech API using Chatterbox
Stars
- OuteTTS
- 1.4k
- chatterbox-tts-api
- 666
Forks
- OuteTTS
- 119
- chatterbox-tts-api
- 152
Open issues
- OuteTTS
- 41
- chatterbox-tts-api
- 16
Language
- OuteTTS
- Python
- chatterbox-tts-api
- Python
Adopt for
- OuteTTS
- OuteTTS is a text-to-speech tool for Python that interfaces with its model library and integrates llama.cpp.
- 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
- OuteTTS
- -
- chatterbox-tts-api
- -
Runtime
- OuteTTS
- -
- chatterbox-tts-api
- -
License
- OuteTTS
- 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
- OuteTTS
- Mar 23, 2026
- chatterbox-tts-api
- Dec 23, 2025
Categories
- OuteTTS
- Speech & Audio
- chatterbox-tts-api
- Speech & Audio
Trust and health
Days since push
- OuteTTS
- 128d
- chatterbox-tts-api
- 232d
Open issues (now)
- OuteTTS
- 41
- chatterbox-tts-api
- 16
OSV dependency advisories
- OuteTTS
- Published findings
- chatterbox-tts-api
- No lockfile (source not queried)
Full report
- OuteTTS
- Trust report
- chatterbox-tts-api
- Trust report
Shared compatibility
- Python · OuteTTS: Python runtime · chatterbox-tts-api: Python runtime
Choose OuteTTS if…
- License: OuteTTS is Apache-2.0, chatterbox-tts-api is AGPL-3.0.
- Tags unique to OuteTTS: gguf, llama, text-to-speech, transformers.
- Use when you need access to OuteTTS-specific models.
When NOT to use OuteTTS
- Avoid if your hardware does not support the required dependencies for llama.cpp.
- Not suitable if you require a tool that does not install llama.cpp by default.
Choose chatterbox-tts-api if…
- License: chatterbox-tts-api is AGPL-3.0, OuteTTS 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 (edwko/OuteTTS) · observed Jul 30, 2026
- GitHub forks (edwko/OuteTTS) · observed Jul 30, 2026
- Last push (edwko/OuteTTS) · observed Mar 23, 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: OuteTTS 1.4k · chatterbox-tts-api 666 (synced Jul 30, 2026).
Common questions
- What is the difference between OuteTTS and chatterbox-tts-api?
- OuteTTS: Interface for OuteTTS models using 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 OuteTTS over chatterbox-tts-api?
- Choose OuteTTS over chatterbox-tts-api when License: OuteTTS is Apache-2.0, chatterbox-tts-api is AGPL-3.0; Tags unique to OuteTTS: gguf, llama, text-to-speech, transformers; Use when you need access to OuteTTS-specific models.
- When should I choose chatterbox-tts-api over OuteTTS?
- Choose chatterbox-tts-api over OuteTTS when License: chatterbox-tts-api is AGPL-3.0, OuteTTS 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 OuteTTS?
- Avoid if your hardware does not support the required dependencies for llama.cpp. Not suitable if you require a tool that does not install llama.cpp by default.
- 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 OuteTTS or chatterbox-tts-api more popular on GitHub?
- OuteTTS has more GitHub stars (1,436 vs 666). Stars measure visibility, not whether either tool fits your constraints.
- Are OuteTTS and chatterbox-tts-api open source?
- Yes - both are open-source projects on GitHub (OuteTTS: Apache-2.0, chatterbox-tts-api: AGPL-3.0).
- Where can I find alternatives to OuteTTS or chatterbox-tts-api?
- GraphCanon lists graph-backed alternatives at OuteTTS alternatives and chatterbox-tts-api alternatives (OuteTTS 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, OuteTTS or chatterbox-tts-api?
- OuteTTS: Slowing. 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 OuteTTS and chatterbox-tts-api?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: OuteTTS trust report; chatterbox-tts-api trust report.