Comparison
merlin vs Amphion
Verdict
Pick merlin when license: merlin is Apache-2.0, Amphion is MIT; pick Amphion when license: Amphion is MIT, merlin is Apache-2.0.
Markdown twin · merlin alternatives · Amphion alternatives
GraphCanon updated today
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Trust & integrity
| Signal | merlin | Amphion |
|---|---|---|
| Maintenance | Dormant (2321d since push) As of today · github_public_v1 | Slowing (107d since push) As of today · github_public_v1 |
| Provenance | Not a fork · Organization account As of today · github_public_v1 | Not a fork · Organization account As of today · github_public_v1 |
| Security (OSV) | 594 low (594 low) As of today · osv@v1 | No lockfile As of today · none |
Tagline
- merlin
- Neural Network based Speech Synthesis System
- Amphion
- Amphion (/æmˈfaɪən/) is a toolkit for Audio, Music, and Speech Generation. Its purpose is to support reproducible research and help junior researchers and engineers get started in the field of audio,
Stars
- merlin
- 1.3k
- Amphion
- 9.9k
Forks
- merlin
- 431
- Amphion
- 822
Open issues
- merlin
- 207
- Amphion
- 175
Language
- merlin
- Python
- Amphion
- Python
Adopt for
- merlin
- Merlin is an open-source Python toolkit for building Deep Neural Network models for statistical parametric speech synthesis that requires pairing with a text processor and vocoder.
- Amphion
- -
Persona
- merlin
- -
- Amphion
- -
Runtime
- merlin
- -
- Amphion
- -
License
- merlin
- Apache-2.0
- Amphion
- MIT
Last pushed
- merlin
- Mar 3, 2020
- Amphion
- Mar 25, 2026
Categories
- merlin
- Speech & Audio
- Amphion
- Inference & Serving, Speech & Audio, Computer Vision
Trust and health
Maintenance
- merlin
- Dormant (18%)
- Amphion
- Slowing (36%)
Days since push
- merlin
- 2321d
- Amphion
- 107d
Open issues (now)
- merlin
- 207
- Amphion
- 175
Security scan
- merlin
- 594 low (594 low)
- Amphion
- No lockfile
Full report
- merlin
- Trust report
- Amphion
- Trust report
Shared compatibility
- Python · merlin: Python runtime · Amphion: Python runtime
Choose merlin if…
- License: merlin is Apache-2.0, Amphion is MIT.
- Tags unique to merlin: voice-conversion, deep-learning, text-to-speech, keras.
- Merlin is an open-source Python toolkit for building Deep Neural Network models for statistical parametric speech synthesis that requires pairing with a text processor and vocoder.
When NOT to use merlin
- Last GitHub push was 2321 days ago (dormant maintenance, Mar 3, 2020). Validate activity before betting a new project on merlin.
Choose Amphion if…
- License: Amphion is MIT, merlin is Apache-2.0.
- Tags unique to Amphion: audioldm, audio-synthesis, audio-generation, emilia.
- Also covers Inference & Serving, Computer Vision.
- Amphion ships Docker support for self-hosted deployment.
When NOT to use Amphion
- Last GitHub push was 108 days ago (slowing maintenance, Mar 25, 2026). Validate activity before betting a new project on Amphion.
- Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (CSTR-Edinburgh/merlin) · observed Jul 11, 2026
- GitHub forks (CSTR-Edinburgh/merlin) · observed Jul 11, 2026
- Last push (CSTR-Edinburgh/merlin) · observed Mar 3, 2020
- License file (Apache-2.0) · observed Jul 11, 2026
- Decision facts (enrichment) · observed Jul 12, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (open-mmlab/Amphion) · observed Jul 11, 2026
- GitHub forks (open-mmlab/Amphion) · observed Jul 11, 2026
- Last push (open-mmlab/Amphion) · observed Mar 25, 2026
- License file (MIT) · observed Jul 11, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: merlin 1.3k · Amphion 9.9k (synced Jul 11, 2026).
Common questions
- What is the difference between merlin and Amphion?
- merlin: Neural Network based Speech Synthesis System. Amphion: Amphion (/æmˈfaɪən/) is a toolkit for Audio, Music, and Speech Generation. Its purpose is to support reproducible research and help junior researchers and engineers get started in the field of audio, . See the comparison table for live GitHub stats and shared categories.
- When should I choose merlin over Amphion?
- Choose merlin over Amphion when License: merlin is Apache-2.0, Amphion is MIT; Tags unique to merlin: voice-conversion, deep-learning, text-to-speech, keras; Merlin is an open-source Python toolkit for building Deep Neural Network models for statistical parametric speech synthesis that requires pairing with a text processor and vocoder.
- When should I choose Amphion over merlin?
- Choose Amphion over merlin when License: Amphion is MIT, merlin is Apache-2.0; Tags unique to Amphion: audioldm, audio-synthesis, audio-generation, emilia; Also covers Inference & Serving, Computer Vision; Amphion ships Docker support for self-hosted deployment.
- When should I avoid merlin?
- Last GitHub push was 2321 days ago (dormant maintenance, Mar 3, 2020). Validate activity before betting a new project on merlin.
- When should I avoid Amphion?
- Last GitHub push was 108 days ago (slowing maintenance, Mar 25, 2026). Validate activity before betting a new project on Amphion. Inference & Serving: Self-hosting rarely beats a hosted API on cost until you have steady, high-volume traffic.
- Is merlin or Amphion more popular on GitHub?
- Amphion has more GitHub stars (9,927 vs 1,319). Stars measure visibility, not whether either tool fits your constraints.
- Are merlin and Amphion open source?
- Yes - both are open-source projects on GitHub (merlin: Apache-2.0, Amphion: MIT).
- Where can I find alternatives to merlin or Amphion?
- GraphCanon lists graph-backed alternatives at merlin alternatives and Amphion alternatives (merlin markdown twin, Amphion 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, merlin or Amphion?
- merlin: Dormant. Amphion: 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 merlin and Amphion?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: merlin trust report; Amphion trust report.