Comparison
hifi-gan vs dia2
Verdict
Pick hifi-gan when license: hifi-gan is MIT, dia2 is Apache-2.0; pick dia2 when license: dia2 is Apache-2.0, hifi-gan is MIT.
Markdown twin · hifi-gan alternatives · dia2 alternatives
GraphCanon updated 3w
Trust & integrity
| Signal | hifi-gan | dia2 |
|---|---|---|
| Maintenance | Dormant (731d since push) As of 3w · github_public_v1 | Slowing (243d since push) As of 3w · github_public_v1 |
| Provenance | Not a fork · Personal account As of 3w · github_public_v1 | Not a fork · Organization account As of 3w · 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
- hifi-gan
- Generative Adversarial Networks for Efficient and High Fidelity Speech Synthesis
- dia2
- TTS model capable of streaming conversational audio in real-time.
Stars
- hifi-gan
- 2.4k
- dia2
- 1.2k
Forks
- hifi-gan
- 555
- dia2
- 99
Open issues
- hifi-gan
- 111
- dia2
- 5
Language
- hifi-gan
- Python
- dia2
- Python
Adopt for
- hifi-gan
- HiFi-GAN is optimized for generating high-fidelity speech efficiently and supports both training from scratch and fine-tuning with pretrained models.
- dia2
- -
Persona
- hifi-gan
- -
- dia2
- -
Runtime
- hifi-gan
- -
- dia2
- -
License
- hifi-gan
- MIT
- dia2
- Apache-2.0
Last pushed
- hifi-gan
- Jul 27, 2024
- dia2
- Nov 29, 2025
Categories
- hifi-gan
- Speech & Audio
- dia2
- Speech & Audio
Trust and health
Maintenance
- hifi-gan
- Dormant (18%)
- dia2
- Slowing (36%)
Days since push
- hifi-gan
- 731d
- dia2
- 243d
Open issues (now)
- hifi-gan
- 111
- dia2
- 5
Owner type
- hifi-gan
- User
- dia2
- Organization
OSV dependency advisories
- hifi-gan
- Published findings
- dia2
- No lockfile (source not queried)
Full report
- hifi-gan
- Trust report
- dia2
- Trust report
Choose hifi-gan if…
- License: hifi-gan is MIT, dia2 is Apache-2.0.
- Tags unique to hifi-gan: deep-learning, gan, hifi-gan, pytorch.
- When you require real-time generation capabilities up to 167.9 times faster than real time on a single V100 GPU, or even 13.4 times faster on CPU than real time for the small footprint version
When NOT to use hifi-gan
- If your application prioritizes sample quality above speed, despite the competitive position of HiFi-GAN in both criteria
- When the computational resources for running models on a V100 GPU or leveraging the small footprint version's CPU efficiency are not available
- In scenarios requiring more than just high-fidelity speech synthesis but also complex text-to-speech natural language processing capabilities
Choose dia2 if…
- License: dia2 is Apache-2.0, hifi-gan is MIT.
- Tags unique to dia2: open-weight.
- When you need real-time streaming capabilities for text-to-speech applications.
When NOT to use dia2
- For projects aimed at batch processing or non-realtime TTS applications where instantaneous audio output isn't required.
- If you are looking for an open-source model that does not include specific proprietary components like the Kyutai Mimi codec.
Explore
Sources
Every stat on this page traces to a dated GitHub sync, license file, enrichment field, or trust scan.
- GitHub stars (jik876/hifi-gan) · observed Jul 29, 2026
- GitHub forks (jik876/hifi-gan) · observed Jul 29, 2026
- Last push (jik876/hifi-gan) · observed Jul 27, 2024
- License file (MIT) · observed Jul 29, 2026
- Decision facts (enrichment) · observed Jul 16, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
- GitHub stars (nari-labs/dia2) · observed Jul 30, 2026
- GitHub forks (nari-labs/dia2) · observed Jul 30, 2026
- Last push (nari-labs/dia2) · observed Nov 29, 2025
- License file (Apache-2.0) · observed Jul 30, 2026
- Decision facts (enrichment) · observed Jul 12, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: hifi-gan 2.4k · dia2 1.2k (synced Jul 29, 2026).
Common questions
- What is the difference between hifi-gan and dia2?
- hifi-gan: Generative Adversarial Networks for Efficient and High Fidelity Speech Synthesis. dia2: TTS model capable of streaming conversational audio in real-time.. See the comparison table for live GitHub stats and shared categories.
- When should I choose hifi-gan over dia2?
- Choose hifi-gan over dia2 when License: hifi-gan is MIT, dia2 is Apache-2.0; Tags unique to hifi-gan: deep-learning, gan, hifi-gan, pytorch; When you require real-time generation capabilities up to 167.9 times faster than real time on a single V100 GPU, or even 13.4 times faster on CPU than real time for the small footprint version.
- When should I choose dia2 over hifi-gan?
- Choose dia2 over hifi-gan when License: dia2 is Apache-2.0, hifi-gan is MIT; Tags unique to dia2: open-weight; When you need real-time streaming capabilities for text-to-speech applications.
- When should I avoid hifi-gan?
- If your application prioritizes sample quality above speed, despite the competitive position of HiFi-GAN in both criteria When the computational resources for running models on a V100 GPU or leveraging the small footprint version's CPU efficiency are not available In scenarios requiring more than just high-fidelity speech synthesis but also complex text-to-speech natural language processing capabilities
- When should I avoid dia2?
- For projects aimed at batch processing or non-realtime TTS applications where instantaneous audio output isn't required. If you are looking for an open-source model that does not include specific proprietary components like the Kyutai Mimi codec.
- Is hifi-gan or dia2 more popular on GitHub?
- hifi-gan has more GitHub stars (2,363 vs 1,160). Stars measure visibility, not whether either tool fits your constraints.
- Are hifi-gan and dia2 open source?
- Yes - both are open-source projects on GitHub (hifi-gan: MIT, dia2: Apache-2.0).
- Where can I find alternatives to hifi-gan or dia2?
- GraphCanon lists graph-backed alternatives at hifi-gan alternatives and dia2 alternatives (hifi-gan markdown twin, dia2 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, hifi-gan or dia2?
- hifi-gan: Dormant. dia2: 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 hifi-gan and dia2?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: hifi-gan trust report; dia2 trust report.