Udio vs Sonauto AI

Udio9.0Visit Sonauto AI8.8Visit

Higher score Udio #3 in AI Song Extenders 9.0/10 Free plan · 7-day trial Free planFree trial✓ 1 of 6 features Visit Udio

vs

Sonauto AI #5 in AI Song Extenders 8.8/10 Free plan Free plan✓ 5 of 6 features Visit Sonauto

• Udio fits best

  Creators extending songs with timeline editing

• Sonauto AI fits best

  Guided song sections and MIDI-aware workflows

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Side by side

Feature	Udio 9.0/10 Visit ↗	Sonauto AI 8.8/10 Visit ↗
At a glance
Editor score	9.0	8.8
Ranking	#3 in AI Song Extenders	#5 in AI Song Extenders
Best for	Creators extending songs with timeline editing	Guided song sections and MIDI-aware workflows
Pricing model	Free plan + paid	Free plan + paid
Starting price	$96/yr	$10/mo
Free plan	✓	✓
Free trial	7 days	—
Deployment	Cloud, Mobile	Cloud
Platforms	Web, iOS	Web
Support	Live chat, Docs	Email
Built for	Solo, Small business	Solo, Small business
Features Udio 1/6 · Sonauto AI 5/6
Section inpainting	Not checked yet	Not checked yet
Audio upload	✓	✓
WAV export	Not checked yet	✓ (best)
Stem export	—	✓ (best)
Commercial licence	Not checked yet	✓ (best)
Style reference	Not checked yet	✓ (best)
Specs
Max extension length	Not checked yet	Not checked yet
Our review
Pros	Sessions timeline editing supports song extensions and structured refinement Upload audio for extending, remixing, inpainting, and styling Voice and style blending plus four-way stem separation	Continue from a selected point in an upload or library track Direct intros, bridges, breaks, outros or longer sections Paid plans include vocal removal, stem splitting and MIDI drafts
Cons	Tracks are limited to about 2.17 minutes Audio, video, and stem downloads are disabled during its transition Mobile access is limited to iOS	Free songs are public by default and kept in cloud storage for 30 days Song extension and MP3/WAV downloads require a paid plan Commercial-use rights apply only to eligible annual-plan generations
Our verdict	Udio is a cloud and mobile AI music creation service for turning text prompts, lyrics, styles, and voice references into vocal or instrumental songs. It supports automatic or custom lyrics, lyric editing and effects, and lets creators… Read the review →	Sonauto AI is a browser-based music creation and editing service for people who want to extend a track by shaping what comes next. Its extension tool starts from a point the user selects in an uploaded MP3 or a song in the Sonauto library,… Read the review →

Strengths and trade-offs

• Udio — where it wins

  • Sessions timeline editing supports song extensions and structured refinement
  • Upload audio for extending, remixing, inpainting, and styling
  • Voice and style blending plus four-way stem separation

  Where it doesn't

  • Tracks are limited to about 2.17 minutes
  • Audio, video, and stem downloads are disabled during its transition
  • Mobile access is limited to iOS

• Sonauto AI — where it wins

  • Continue from a selected point in an upload or library track
  • Direct intros, bridges, breaks, outros or longer sections
  • Paid plans include vocal removal, stem splitting and MIDI drafts

  Where it doesn't

  • Free songs are public by default and kept in cloud storage for 30 days
  • Song extension and MP3/WAV downloads require a paid plan
  • Commercial-use rights apply only to eligible annual-plan generations

• Udio9.0/10 · Free plan · 7-day trial

  A flexible AI song editor with Sessions timeline tools, but short tracks and disabled downloads.

  Visit UdioFull verdict →
• Sonauto AI8.8/10 · Free plan

  A browser-based song extender with section directions, stem tools and MIDI drafts.

  Visit SonautoFull verdict →