Comparison
RealtimeTTS vs chatterbox-tts-api
Verdict
Pick RealtimeTTS when license: RealtimeTTS is MIT, chatterbox-tts-api is AGPL-3.0; pick chatterbox-tts-api when license: chatterbox-tts-api is AGPL-3.0, RealtimeTTS is MIT.
Markdown twin · RealtimeTTS alternatives · chatterbox-tts-api alternatives
GraphCanon updated 1w
vs
Trust & integrity
| Signal | RealtimeTTS | chatterbox-tts-api |
|---|---|---|
| Maintenance | Steady (58d 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 published findings from this source as of 2026-07-11 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
- RealtimeTTS
- Converts text to speech in realtime
- chatterbox-tts-api
- Local OpenAI-compatible text-to-speech API using Chatterbox
Stars
- RealtimeTTS
- 4.0k
- chatterbox-tts-api
- 666
Forks
- RealtimeTTS
- 399
- chatterbox-tts-api
- 152
Open issues
- RealtimeTTS
- 125
- chatterbox-tts-api
- 16
Language
- RealtimeTTS
- Python
- chatterbox-tts-api
- Python
Adopt for
- RealtimeTTS
- -
- 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
- RealtimeTTS
- -
- chatterbox-tts-api
- -
Runtime
- RealtimeTTS
- -
- chatterbox-tts-api
- -
License
- RealtimeTTS
- MIT
- 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
- RealtimeTTS
- May 31, 2026
- chatterbox-tts-api
- Dec 23, 2025
Categories
- RealtimeTTS
- Speech & Audio
- chatterbox-tts-api
- Speech & Audio
Trust and health
Maintenance
- RealtimeTTS
- Steady (60%)
- chatterbox-tts-api
- Slowing (36%)
Days since push
- RealtimeTTS
- 58d
- chatterbox-tts-api
- 232d
Open issues (now)
- RealtimeTTS
- 125
- chatterbox-tts-api
- 16
OSV dependency advisories
- RealtimeTTS
- No published findings from this source as of 2026-07-11
- chatterbox-tts-api
- No lockfile (source not queried)
Full report
- RealtimeTTS
- Trust report
- chatterbox-tts-api
- Trust report
Shared compatibility
- Python · RealtimeTTS: Python runtime · chatterbox-tts-api: Python runtime
Choose RealtimeTTS if…
- License: RealtimeTTS is MIT, chatterbox-tts-api is AGPL-3.0.
- Tags unique to RealtimeTTS: python, realtime, speech-synthesis, text-to-speech.
- Use RealtimeTTS when you need to integrate real-time text-to-speech capabilities into a Python application that requires immediate audio output without delays.
When NOT to use RealtimeTTS
- Avoid using RealtimeTTS in scenarios where pre-recorded or highly customized voice outputs are crucial, given its focus on speed over customization options.
- Do not use RealtimeTTS if heavy reliance on external cloud services is a requirement, since it emphasizes local execution for performance.
Choose chatterbox-tts-api if…
- License: chatterbox-tts-api is AGPL-3.0, RealtimeTTS 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 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 (KoljaB/RealtimeTTS) · observed Jul 29, 2026
- GitHub forks (KoljaB/RealtimeTTS) · observed Jul 29, 2026
- Last push (KoljaB/RealtimeTTS) · observed May 31, 2026
- License file (MIT) · observed Jul 29, 2026
- Decision facts (enrichment) · observed Jul 16, 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: RealtimeTTS 4.0k · chatterbox-tts-api 666 (synced Jul 29, 2026).
Common questions
- What is the difference between RealtimeTTS and chatterbox-tts-api?
- RealtimeTTS: Converts text to speech in realtime. 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 RealtimeTTS over chatterbox-tts-api?
- Choose RealtimeTTS over chatterbox-tts-api when License: RealtimeTTS is MIT, chatterbox-tts-api is AGPL-3.0; Tags unique to RealtimeTTS: python, realtime, speech-synthesis, text-to-speech; Use RealtimeTTS when you need to integrate real-time text-to-speech capabilities into a Python application that requires immediate audio output without delays.
- When should I choose chatterbox-tts-api over RealtimeTTS?
- Choose chatterbox-tts-api over RealtimeTTS when License: chatterbox-tts-api is AGPL-3.0, RealtimeTTS 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 RealtimeTTS?
- Avoid using RealtimeTTS in scenarios where pre-recorded or highly customized voice outputs are crucial, given its focus on speed over customization options. Do not use RealtimeTTS if heavy reliance on external cloud services is a requirement, since it emphasizes local execution for performance.
- 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 RealtimeTTS or chatterbox-tts-api more popular on GitHub?
- RealtimeTTS has more GitHub stars (4,002 vs 666). Stars measure visibility, not whether either tool fits your constraints.
- Are RealtimeTTS and chatterbox-tts-api open source?
- Yes - both are open-source projects on GitHub (RealtimeTTS: MIT, chatterbox-tts-api: AGPL-3.0).
- Where can I find alternatives to RealtimeTTS or chatterbox-tts-api?
- GraphCanon lists graph-backed alternatives at RealtimeTTS alternatives and chatterbox-tts-api alternatives (RealtimeTTS 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, RealtimeTTS or chatterbox-tts-api?
- RealtimeTTS: 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 RealtimeTTS and chatterbox-tts-api?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: RealtimeTTS trust report; chatterbox-tts-api trust report.