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Head-to-head · AI Music APIs

Stable Audio vs Loudly

  • Updated Sep 2026
  • Both researched from official sources
  • 3 checks side by side
Stable Audio #3 in AI Music APIs 3.8/10 Free plan Free plan✓ 0 of 2 features Visit Stable Audio
Higher score Loudly #4 in AI Music APIs 5.8/10 Free plan Free plan✓ 1 of 2 features Visit Loudly

Stable Audio leads on 0 checks, Loudly on 1, and 2 are even. Who comes out ahead on the 3 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreLoudly · 5.8/10
  • Free planboth
  • Most featuresLoudly · 1 of 2

Loudly scores higher on our rubric for ai music apis: 5.8 against 3.8 out of 10; our editors rank them #4 and #3.

Loudly offers vocal generation; Stable Audio doesn't.

Stable Audio is the better fit for teams building customizable audio-generation workflows. Loudly is the better fit for teams needing a versatile music API and stem workflows.

  • Stable Audio fits best

    Teams building customizable audio-generation workflows

  • Loudly fits best

    Teams needing a versatile music API and stem workflows

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Side by side

Feature Stable Audio 3.8/10 Visit ↗ Loudly 5.8/10 Visit ↗
At a glance
Editor score 3.8 5.8
Ranking #3 in AI Music APIs #4 in AI Music APIs
Best for Teams building customizable audio-generation workflows Teams needing a versatile music API and stem workflows
Pricing model Free plan + paid Free plan + paid
Starting price Not published Not published
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted, Browser extension Cloud, Browser extension
Platforms Web Web
Support Email, Tickets, Docs Email, Docs
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features Stable Audio 0/2 · Loudly 1/2
Vocal generation — ✓ (best)
Official SDKs — Not published
Specs
Output license Commercial Not published
Max track length 6 min Not published
API pricing basis Call Not published
Generation latency Unspecified Not published
Our review
Pros
  • Generates music and sound effects from text or audio samples.
  • Supports inpainting, track extension, and segment reworking.
  • Offers open-weight models and self-hosted deployment.
  • Prompt and formula generation with detailed musical controls
  • Stem, WAV and MP3 exports plus remixing and mastering
  • Music API, commercial licensing and distribution options
Cons
  • Does not support vocal generation.
  • API costs credits for each successful generation.
  • Published API documentation and homepage describe different model versions.
  • Free plan includes limited feature access and usage allowances
  • Plan names repeat across variants with and without Distro Plus
  • Support is provided through email and documentation
Our verdict

Stable Audio is Stability AI’s generative audio model family for developers, creators, and enterprise teams building audio workflows. It combines a managed API and web app with open-weight models, and can be deployed in the cloud or…

Read the review →

Loudly is an online AI music creation platform for musicians, producers, video creators, advertisers, podcasters and other professionals. It supports prompt-based and formula-based generation, with controls for genre, BPM, key, duration,…

Read the review →
  1. Stable AudioAI Music APIs 3.8Free plan
  2. LoudlyAI Music APIs 5.8Free plan

Strengths and trade-offs

  • Stable Audio — where it wins

    • Generates music and sound effects from text or audio samples.
    • Supports inpainting, track extension, and segment reworking.
    • Offers open-weight models and self-hosted deployment.

    Where it doesn't

    • Does not support vocal generation.
    • API costs credits for each successful generation.
    • Published API documentation and homepage describe different model versions.

  • Loudly — where it wins

    • Prompt and formula generation with detailed musical controls
    • Stem, WAV and MP3 exports plus remixing and mastering
    • Music API, commercial licensing and distribution options

    Where it doesn't

    • Free plan includes limited feature access and usage allowances
    • Plan names repeat across variants with and without Distro Plus
    • Support is provided through email and documentation

More comparisons

All AI music APIs comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026