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AceStep AI Music Remixer

acestep.io

From $9/mo Free plan Open source WebWindowsmacOSLinuxAPISelf-hosted
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Spec score 9.5 #1 of 27 in AI Short Video Music Generators

What it is

AceStep AI Music Remixer creates an original song arrangement with drums, bass, harmonies, and vocals from a prompt and selected settings. Users can set genre, key, BPM, and energy, then choose male, female, or duet vocals. It can organize a remix into an intro, build, drop, breakdown, climax, and outro. The remixer accepts MP3 or WAV uploads up to 50 MB; the page says the file stays in the browser until generation. It offers MP3 and WAV downloads and describes the stereo mix as royalty-free. Lyrics and vocals are supported in English, Spanish, Japanese, Korean, and Chinese. The page says a full 2–3 minute remix typically renders in roughly 20 seconds, depending on duration and quality settings. A free plan allows 10 credits per day for personal use only; paid plans start at $9/mo. Free use excludes monetization, client work, DSP distribution, and Content ID registration. Stem upload, mashup mode, and stem export are listed as coming soon.

Spec sheet

What it does
The remixer accepts an uploaded song and generates a new arrangement with a selected genre, vocal style or tempo.Read 14 Oct 2026 · acestep.io
Intended users
The page names DJs, producers, content creators, TikTok and Reels editors, podcasters, indie artists, brands and remix fans.Read 3 Oct 2026 · acestep.io
Support
The pricing page lists standard support for Creator, priority support for Pro / Artist, and dedicated support plus API for Studio.Read 3 Oct 2026 · acestep.io
API access restriction
API-key creation and live calls require an active Studio subscription priced at $49 per month on the API page.Read 14 Oct 2026 · acestep.io
API capabilities
The API page lists endpoints for generation, extension, section replacement, adding stems, cover creation and lyric generation.Read 14 Oct 2026 · acestep.io
Arrangement
It can generate a remix structure with an intro, build, drop, breakdown, climax and outro.Read 3 Oct 2026 · acestep.io
Browser multitrack editor
Studio layers generated songs, user uploads and separated stems on a timeline with trimming, clip movement, volume, panning and stereo export.Read 14 Oct 2026 · acestep.io
Commercial use
The remixer FAQ says generated remixes are original and royalty-free for personal and commercial projects, including ads, videos and releases.Read 3 Oct 2026 · acestep.io
Content restrictions
The acceptable-use policy prohibits copyright infringement, deceptive deepfakes, hate speech, explicit sexual content and graphic violence.Read 14 Oct 2026 · acestep.io
Developer documentation
The repository provides guides for Gradio, Python, REST API, CLI, installation, GPU compatibility, troubleshooting, benchmarking and LoRA training.Read 14 Oct 2026 · github.com
Exports
The remixer page lists MP3 and WAV downloads and describes the stereo mix as royalty-free.Read 3 Oct 2026 · acestep.io
Flow editing
Studio can retake verses, swap hooks and extend outros without regenerating the entire song.Read 14 Oct 2026 · acestep.io
Free use limit
The pricing page limits free generations to personal projects and excludes monetization, client work, DSP distribution and Content ID registration.Read 3 Oct 2026 · acestep.io
Generation speed
The product advertises a full three-minute remix in about 20 seconds.Read 14 Oct 2026 · acestep.io
Genre and language coverage
The service claims more than 15 genres and vocals in at least 10 languages, including English, Spanish, Japanese and Chinese.Read 14 Oct 2026 · acestep.io
Independent paper date
The ACE-Step 1.5 technical paper was submitted to arXiv on January 31, 2026 and revised on February 6, 2026.Read 14 Oct 2026 · arxiv.org
Independent research result
The ACE-Step 1.5 arXiv paper reports generation under two seconds on an A100, under ten seconds on an RTX 3090, operation below 4 GB VRAM and LoRA personalization from a few songs.Read 14 Oct 2026 · arxiv.org
Input-rights limitation
Terms place responsibility on users to have rights or permissions for uploaded audio, lyrics, prompts and other source materials.Read 14 Oct 2026 · acestep.io
Integrations and destinations
Paid plans list distribution destinations including Spotify, Apple Music, YouTube Music and SoundCloud; the site also advertises TikTok and other social publishing use.Read 14 Oct 2026 · acestep.io
Integrations and distribution
The pricing page lists Spotify, Apple Music, YouTube Music and SoundCloud distribution rights with Pro / Artist, and client project uses with Studio.Read 3 Oct 2026 · acestep.io
Languages
The model supports lyrics and vocals in English, Spanish, Japanese, Korean and Chinese, with more languages planned.Read 3 Oct 2026 · acestep.io
Limit: audio artifacts
The same independent reviewer reported noticeable vocal artifacts and weaker compositional moments in personal tests compared with leading proprietary tools.Read 14 Oct 2026 · linkedin.com
Limit: cloud concurrency
A July 8, 2026 podcast report said its tests saw four concurrent requests succeed, half of eight succeed and all sixteen fail with HTTP 504 errors.Read 14 Oct 2026 · podcasts.apple.com
Limit: fine-grained control
The reviewer said musicians and prosumers still need much more precise hands-on control over generation.Read 14 Oct 2026 · linkedin.com
Limitations
Stem upload, mashup mode and stem export are listed as coming soon.Read 3 Oct 2026 · acestep.io
Local model limits
The repository says 2B models need roughly 4.7 GB for weights, while XL models need at least 12 GB VRAM with offload or 20 GB without it.Read 14 Oct 2026 · github.com
Local platform support
Launch scripts are provided for Windows, Linux and macOS, with CUDA, AMD ROCm and Apple Silicon MLX variants.Read 14 Oct 2026 · github.com
Local requirements
The repository specifies Python 3.11 or 3.12, recommends CUDA GPUs, and also documents MPS, ROCm, Intel XPU and CPU support.Read 14 Oct 2026 · github.com
Maker information
The About page describes ACE-Step’s mission as making AI music creation accessible and provides [email protected] for questions or collaboration; it does not state a headquarters or founding year.Read 3 Oct 2026 · acestep.io
Mastering
The browser mastering tool provides EQ, multiband compression, stereo width and limiting with targets such as -14 LUFS streaming and -9 LUFS club/radio.Read 14 Oct 2026 · acestep.io
Music extension
The extender adds 30, 60 or 90 seconds to an intro or outro while matching the source key, style and BPM.Read 14 Oct 2026 · acestep.io
Music generation
The home page describes text-to-song generation with vocals in about 20 seconds and no account required for an initial preview.Read 14 Oct 2026 · acestep.io
Notable news: XL release
The official repository records ACE-Step 1.5 XL, using a 4B DiT decoder, as released on April 2, 2026 with at least 12 GB VRAM required and 20 GB recommended.Read 14 Oct 2026 · github.com
Open-source licence
The official ACE-Step 1.5 GitHub repository identifies the project as MIT licensed.Read 14 Oct 2026 · github.com
Praise: open model
A LinkedIn reviewer described ACE-Step as a clear improvement over earlier open-source audio models and praised its hybrid architecture.Read 14 Oct 2026 · linkedin.com
Public API
AceStep exposes an asynchronous REST API at acestep.io/api/v2 with generate-audio and task-status endpoints using bearer authentication.Read 14 Oct 2026 · acestep.io
Remix controls
Users can choose preset style flips and set remix strength from 0 to 1 in 0.05 steps.Read 14 Oct 2026 · acestep.io
Remix outputs
Generated remixes can be downloaded, saved to the library or opened in the browser Studio.Read 14 Oct 2026 · acestep.io
Remixer inputs
The browser remixer accepts MP3 or WAV files up to 50 MB and offers optional lyrics input.Read 14 Oct 2026 · acestep.io
Security and privacy
The privacy policy says inputs are processed for service operation and support, are not used to train generative models, and are protected with encryption, firewalls and access controls.Read 14 Oct 2026 · acestep.io
Self-hosting
The hosted API page says ACE-Step 1.5 is open source and can be run independently, while the hosted service supplies post-processing and infrastructure.Read 14 Oct 2026 · acestep.io
Speed
The page says a full 2–3 minute remix typically renders in roughly 20 seconds, depending on duration and quality settings.Read 3 Oct 2026 · acestep.io
Stem splitting
The stem tool offers 4-stem, 6-stem and Hi-Fi 12-stem modes, with downloadable WAV stems and ZIP export.Read 14 Oct 2026 · acestep.io
Upload limit
The remixer accepts MP3 or WAV uploads up to 50 MB, and says the file stays in the browser until generation.Read 3 Oct 2026 · acestep.io

Plans and prices

Free Free 10 credits/day · generations up to 120 seconds · personal use only Read 14 Oct 2026 · acestep.io
50 Credits $7, paid once One-time payment 50 credits · credits never expire Read 3 Oct 2026 · acestep.io
Credit pack $7, paid once one-time payment 50 credits · advertised as about 10 more songs · no subscription Read 14 Oct 2026 · acestep.io
Creator $9 a month monthly 100 credits/month · about 40 standard song versions · up to 4 minutes · social monetization · 2 concurrent generations Read 14 Oct 2026 · acestep.io
Pro / Artist $19 a month monthly 300 credits/month · about 120 standard song versions · DSP distribution rights · batch up to 5 · 4 concurrent generations Read 14 Oct 2026 · acestep.io
Studio $49 a month monthly 900 credits/month · about 360 standard song versions · client and agency work · 3 team seats · dedicated support and API · 8 concurrent generations Read 14 Oct 2026 · acestep.io

Every AceStep AI Music Remixer plan and price →

Strong points and limits

Strong points

  • Set genre, key, BPM, and energy.
  • Choose male, female, or duet vocals.
  • Accepts MP3 and WAV uploads up to 50 MB.
  • Exports MP3 and WAV.

Limits

  • Free generations are limited to personal projects.
  • Mashup mode is listed as coming soon.
  • Stem upload and stem export are not yet listed as available.

Who it suits

The remixer suits DJs, producers, content creators, editors, podcasters, indie artists, brands, and remix fans who want to shape an arrangement with genre, tempo, energy, and vocal controls. Free use is limited to personal projects; paid tiers list additional use rights.

AceStep AI Music Remixer in depth

Read the full write-up

Overview

AceStep AI Music Remixer turns an uploaded track and musical choices into a newly arranged song. It suits creators who want to shape a remix by genre, tempo and vocal style without assembling the arrangement themselves. Its appeal is a guided, section-aware workflow; its key caveat is that commercial permissions vary by plan.

Key features

Users can set genre, key, BPM and energy, then choose male, female or duet vocals. The generated arrangement can move through an intro, build, drop, breakdown, climax and outro, which gives editors more control over a track’s progression than a simple genre transformation. It generates drums, bass, harmonies and vocals, but stem upload, mashup mode and stem export are still coming soon. That makes it a weaker fit for producers who need to combine tracks or work with individual stems.

Uploads can be MP3 or WAV files up to 50 MB, and the remixer says the file stays in the browser until generation. A typical 2–3 minute remix is said to render in roughly 20 seconds, with duration and quality settings affecting the time. MP3 and WAV downloads are offered, and the stereo mix is described as royalty-free. Lyrics and vocals are supported in English, Spanish, Japanese, Korean and Chinese, with more languages planned.

The FAQ describes generated remixes as original and royalty-free for personal and commercial projects, including ads, videos and releases. But the free plan restricts use to personal projects and excludes monetization, client work, DSP distribution and Content ID registration. Paid plans broaden those permissions, so the advertised royalty-free status should not be treated as the same permission on every tier.

Pricing

The free plan costs nothing and provides 10 credits/day, up to 120 seconds, for personal use only. It is useful for trying the workflow, but the duration cap and restrictions rule it out for monetized publishing, client delivery or distribution through streaming services.

The one-time 50 Credits plan costs $7 as a one-time purchase; credits never expire. It avoids a monthly commitment, but the plan details do not specify a duration allowance, commercial permissions or other workflow entitlements, so it is best suited to occasional credit use rather than a clearly defined publishing need.

Creator costs $9 a month, billed $9 / month; the page also shows $12. It includes 100 credits, tracks up to 4 minutes, social monetization and two concurrent generations, plus standard support. This is the practical entry point for regular social publishing, but it does not include the stated DSP distribution rights, WAV export or client and agency work.

Pro / Artist costs $19 a month, billed $19 / month; the page also shows $24. It includes 300 credits, tracks up to 4 minutes, DSP distribution rights, WAV export, four concurrent generations and priority support. It fits artists and producers who need distribution permissions and WAV delivery, although it does not include Studio’s client-work terms, team seats, API or dedicated support.

Studio costs $49 a month, billed $49 / month; the page also shows $62. It includes 900 credits, tracks up to 4 minutes, client and agency work, three team seats, dedicated support, API access and eight concurrent generations. This is the tier for teams handling client projects or higher generation volume; the price and seat allowance are harder to justify for an individual creator.

Platforms

AceStep is available on web and through an API. The browser-based upload flow and API option cover direct use and programmatic access, but no desktop or mobile app platforms are given.

Who it's for

The tool is aimed at DJs, producers, content creators, TikTok and Reels editors, podcasters, indie artists, brands and remix fans. Its arrangement controls and short stated render time suit creators seeking a quick, shaped remix for content. Choose a paid tier if the intended work involves social monetization, client projects or DSP distribution; free use is limited to personal projects.

Pros and cons

Pros: Genre, key, BPM, energy and vocal choices provide meaningful direction without requiring stem-level editing.

Pros: A sectioned arrangement and MP3/WAV downloads support creators who need a track with an intentional arc and export options.

Pros: The 50-credit one-time purchase has no expiry, offering an alternative to monthly billing for occasional use.

Cons: Free generations are capped at 120 seconds and cannot be used for monetization, client work, DSP distribution or Content ID registration.

Cons: Mashup mode and stem handling are not ready, limiting more detailed remix and production workflows.

Cons: Tracks are capped at 4 minutes on the listed monthly plans, and commercial permissions differ by tier.

Alternatives

AI Music Remixing Tools is the broader category for comparing remix options.

Fadr is a freemium choice with vocals, melodies, drums and bass, MP3 downloads, MIDI detection and Remix Maker on its free Fadr Basic plan. Choose it when those capabilities or its api, ios, macos, web and windows platform range matter more.

Audjust AI Music Remixer is another freemium web option with a free trial. Consider it when you want to compare a separate remixer with a trial, while its opened pricing page does not state the free plan’s credits and included limits.

MeloLab AI Remix offers 8 lifetime credits, one concurrent generation, seven-day song storage and personal use on its free plan. Pick it if a small, finite credit allowance and temporary storage suit your needs.

MusicWave.ai gives 10 signup credits for streaming-only personal use, including two song generations on its free plan. It may suit readers who want to start with a clearly stated two-generation allowance.

StemForge is free and open-source, runs locally on your hardware and has no subscriptions or per-track fees. Choose it when local operation matters more than AceStep’s prompt-based hosted workflow.

AetherWave Music Studio is a freemium web and API option with a free plan that includes zero monthly credits, one station, one band, a 100 MB gallery and 30-day file retention. It is worth comparing when those studio and gallery allowances are more relevant to your workflow.

Mubert AI Music Remixer has a free plan with 24 credits/month, two songs/month and one music generation/month for personal use. Choose it if those stated monthly allowances align better with your expected usage.

RiffGen Remixer AI is another freemium web remixer to consider.

Verdict

AceStep is a strong fit for creators who want a guided remix with control over musical direction, vocals and arrangement structure, plus a clear route from personal experimentation to social monetization or DSP distribution. Its main reason to choose another tool is the gap between the free tier’s personal-use limits and the paid permissions, along with the lack of mashup and stem workflows. Pick it for shaped, prompt-driven remixes; look elsewhere for stem-level production or a free commercial workflow.

Verdict

AceStep AI Music Remixer offers arrangement controls and audio exports, with a free personal-use tier and paid plans from $9/mo. Check the listed use restrictions and upcoming-feature limits against your intended workflow.

Where Specifiction places it

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