Suno AI’s Replace Sections and Udio’s Inpainting both let creators tweak specific parts of AI-generated songs, but they cater to different needs and workflows. Here’s how they stack up:
Lyric Editing
- Suno AI: Focuses on direct lyric replacement with a streamlined interface. You can select 10-30 second sections, rewrite text, and instantly generate two alternatives. This works well for refining storytelling or adjusting phrasing.
- Udio: Uses a more technical approach, requiring users to mark lyrics with asterisks (*) for regeneration. While flexible, this method demands precise formatting and trial-and-error to avoid abrupt transitions.
Instrumental Adjustments
- Suno AI: Simplifies adding instrumental breaks (e.g., guitar solos) through metatags in lyrics. However, it lacks stem separation, limiting edits to full sections rather than individual tracks.
- Udio: Excels at isolating elements like vocals or drums via stem separation. This allows granular edits—replacing a single bassline or adjusting vocal pitch without affecting other layers.
Transitions and Cohesion
- Suno AI: Prioritizes smooth transitions by encouraging 30-second edits. Longer selections help blend new and existing sections seamlessly.
- Udio: Struggles with abrupt endings in regenerated sections, often requiring manual stitching in external editors like Audacity for polished results.
User Experience
- Suno AI: Built for simplicity. The right-click menu and preview options make it accessible for quick tweaks, though advanced users may find it limiting.
- Udio: Offers deeper customization but steeper learning curve. Features like “Show Tree” help navigate complex projects, though editing workflows feel clunkier compared to Suno.
Accessibility and Pricing
- Suno AI: Free daily replacements (up to 1,000 sections) for Pro/Premier users, transitioning to a credit system later.
- Udio: Inpainting is locked behind paid subscriptions ($10–$30/month), making it less accessible for casual creators.
The Bottom Line
| Suno AI Replace SectionsUdio Inpainting | ||
|---|---|---|
| Best For | Quick lyric/instrumental tweaks | Detailed, multi-track edits |
| Strengths | User-friendly, smooth transitions | Stem separation, precision |
| Weaknesses | No stem isolation | Steeper learning curve |
Suno shines for rapid iterations, while Udio suits producers needing surgical control. Both tools underscore how AI music editing is evolving—balancing creativity with technical finesse.
