Comparison
hifi-gan vs dia
Verdict
Pick hifi-gan if hiFi-GAN is optimized for generating high-fidelity speech efficiently and supports both training from scratch and fine-tuning with pretrained models; pick dia if dia is an open-weight text-to-dialogue model providing full control over scripts and voices, ideal for generating ultra-realistic dialogue.
Markdown twin · hifi-gan alternatives · dia alternatives
GraphCanon updated 3w
Trust & integrity
| Signal | hifi-gan | dia |
|---|---|---|
| Maintenance | Dormant (731d since push) As of 3w · github_public_v1 | Slowing (251d 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
- dia
- A TTS model for generating ultra-realistic dialogue
Stars
- hifi-gan
- 2.4k
- dia
- 19k
Forks
- hifi-gan
- 555
- dia
- 1.7k
Open issues
- hifi-gan
- 111
- dia
- 91
Language
- hifi-gan
- Python
- dia
- 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.
- dia
- Dia is an open-weight text-to-dialogue model providing full control over scripts and voices, ideal for generating ultra-realistic dialogue.
Persona
- hifi-gan
- -
- dia
- -
Runtime
- hifi-gan
- -
- dia
- -
License
- hifi-gan
- MIT
- dia
- Apache-2.0
Last pushed
- hifi-gan
- Jul 27, 2024
- dia
- Nov 19, 2025
Categories
- hifi-gan
- Speech & Audio
- dia
- Speech & Audio
Trust and health
Maintenance
- hifi-gan
- Dormant (18%)
- dia
- Slowing (36%)
Days since push
- hifi-gan
- 731d
- dia
- 251d
Open issues (now)
- hifi-gan
- 111
- dia
- 91
Owner type
- hifi-gan
- User
- dia
- Organization
OSV dependency advisories
- hifi-gan
- Published findings
- dia
- No lockfile (source not queried)
Full report
- hifi-gan
- Trust report
- dia
- Trust report
Shared compatibility
- Python · hifi-gan: Python runtime · dia: Python runtime
Choose hifi-gan if…
- License: hifi-gan is MIT, dia 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 dia if…
- License: dia is Apache-2.0, hifi-gan is MIT.
- Tags unique to dia: dialogue-generation.
- When you require precise control over voice and script in the creation of highly realistic dialogues
When NOT to use dia
- If your setup lacks a GPU, as Dia has not yet added CPU support
- In scenarios where immediate real-time performance is critical since the first run could be longer due to additional codec downloads
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/dia) · observed Jul 29, 2026
- GitHub forks (nari-labs/dia) · observed Jul 29, 2026
- Last push (nari-labs/dia) · observed Nov 19, 2025
- License file (Apache-2.0) · observed Jul 29, 2026
- Decision facts (enrichment) · observed Jul 17, 2026
- Trust scan (lockfile / OSV) · observed Jul 11, 2026
GitHub stars on cards: hifi-gan 2.4k · dia 19k (synced Jul 29, 2026).
Common questions
- What is the difference between hifi-gan and dia?
- hifi-gan: Generative Adversarial Networks for Efficient and High Fidelity Speech Synthesis. dia: A TTS model for generating ultra-realistic dialogue. See the comparison table for live GitHub stats and shared categories.
- When should I choose hifi-gan over dia?
- Choose hifi-gan over dia when License: hifi-gan is MIT, dia 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 dia over hifi-gan?
- Choose dia over hifi-gan when License: dia is Apache-2.0, hifi-gan is MIT; Tags unique to dia: dialogue-generation; When you require precise control over voice and script in the creation of highly realistic dialogues.
- 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 dia?
- If your setup lacks a GPU, as Dia has not yet added CPU support In scenarios where immediate real-time performance is critical since the first run could be longer due to additional codec downloads
- Is hifi-gan or dia more popular on GitHub?
- dia has more GitHub stars (19,361 vs 2,363). Stars measure visibility, not whether either tool fits your constraints.
- Are hifi-gan and dia open source?
- Yes - both are open-source projects on GitHub (hifi-gan: MIT, dia: Apache-2.0).
- Where can I find alternatives to hifi-gan or dia?
- GraphCanon lists graph-backed alternatives at hifi-gan alternatives and dia alternatives (hifi-gan markdown twin, dia 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 dia?
- hifi-gan: Dormant. dia: 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 dia?
- GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: hifi-gan trust report; dia trust report.