SongToolbox AI Song Extender
Extend uploaded songs with AI-generated continuations.
At a glance
- Editor score6.1 / 10
- PricingFree plan · paid from $9/mo
- Best forShort, clearly bounded free extensions
- Free planYes
- Paid from$9/mo
- Section inpaintingNo
- Facts checked26 Sep 2026
Where it wins
- Accepts MP3, WAV, M4A, OGG, and FLAC source audio
- Offers 30-second, one-minute, and two-minute target lengths
- Free plan allows two daily extensions without an account
Where it doesn't
- Extended tracks are available as MP3, not WAV
- No stem export or section inpainting
- The model determines the exact ending length
Our verdict on SongToolbox AI Song Extender
SongToolbox AI Song Extender is a web-based tool for creating a continuation from uploaded audio. It suits solo creators and small teams who want to extend a track with a chosen direction and a bounded target length, rather than edit individual sections or export separated stems. Source files can be MP3, WAV, M4A, OGG, or FLAC, up to 25 MB and eight minutes long. Users can add a text direction, preview the result in an in-page player, and download the extended track as an MP3.
Length controls make the tool’s scope clear: the available targets are 30 seconds, one minute, or two minutes. The two-minute choice is a target, not a guaranteed duration; the model determines the exact ending length. That distinction matters when an extension needs to meet a precise runtime. SongToolbox focuses on continuing an uploaded track, with a style reference indicated among its category capabilities, rather than section inpainting or stem-level work. It is a better fit for a straightforward continuation than for detailed arrangement or export workflows.
The Free plan provides two extensions per day without requiring an account. Pro costs $9 per month and adds unlimited extensions, priority processing, early access to new AI tools, and cancellation anytime. The feature page specifies MP3 for the generated result, so buyers needing WAV export or stems should look elsewhere. Choose SongToolbox for occasional guided extensions, or Pro when the daily cap is too restrictive; skip it if exact duration or more advanced audio deliverables are central to the job.
SongToolbox AI Song Extender pricing
All 2 SongToolbox AI Song Extender plans and prices →
SongToolbox AI Song Extender fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $9/mo |
| Max extension length | 120 seconds |
| Section inpainting | No |
| Audio upload | Yes |
| WAV export | No |
| Stem export | No |
| Commercial licence | Not verified |
| Style reference | Yes |
| Money-back guarantee | 7 days |
| Deployment | Cloud |
| Platforms | Web |
| Support | |
| Built for | Solo, Small business (editorial estimate) |
| Pricing | Free plan · paid from $9/mo (source) |
| Website | songtoolbox.tools |
| Facts checked | 26 Sep 2026 |
Alternatives to SongToolbox AI Song Extender
- SunoA song-generation and editing suite with extension tools, stems, and a browser-based studio.6.1
- MusicWave.aiA broad web-based AI music toolkit with free access and paid commercial-use tiers.6.1
- UdioA flexible AI song editor with Sessions timeline tools, but short tracks and disabled downloads.6.5
See all SongToolbox AI Song Extender alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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