StepAudio 3

StepAudio 3

StepFun
+
+

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About

Muse is an AI-native MIDI composition and editing tool that empowers users to compose musical ideas with a smart co-writer by generating chords, melodies, basslines, drums, and full arrangements from natural-language descriptions or existing materials, then refining them interactively with context-aware feedback. It understands music theory concepts like harmonic function and voice leading, helping users explore musical ideas they might not discover on their own, and lets creators upload, expand, or remix MIDI tracks, collaborate with an AI agent in real time, and iterate rapidly. It supports multiple AI models, including GPT-5.2, Gemini, and custom agents tuned for musical reasoning, and offers features such as chat-with-your-track feedback, real-time MIDI editing, multi-track generation, extended arrangement tools, and the ability to export compositions as standard MIDI or audio files for use in digital audio workstations.

About

StepAudio 3 is StepFun’s next-generation audio model family, built to understand, generate, and interact through voice, sound, and music. The lineup includes StepAudio 3 Realtime for natural full-duplex conversation, StepAudio 3 ASR for speech recognition, StepAudio 3 TTS for speech synthesis, StepAudio 3 Gen for general-purpose audio generation, and StepAudio 3 Music for long-form music creation. Realtime is designed around a continuous listen-converse-think-act loop, understanding not only words but also hesitation, laughter, emotion, pauses, backchannels, and interruptions. It can think while speaking, reason through harder questions without breaking conversational flow, and use tools to complete tasks once it understands the user’s intent. StepAudio 3 Gen unifies zero-shot TTS, voice design, vocal generation, sound effects, music, and mixed audio generation within one framework, while StepAudio 3 Music supports text-controlled songs, instrumentals, vocal arrangement, and more.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Musicians, composers, music producers, and creative technologists looking for a tool that helps generate, edit, refine, and export MIDI compositions using natural language and deep musical understanding

Audience

Developers, AI teams, and creators needing to build real-time voice agents, speech applications, transcription systems, and generative audio or music experiences

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

$15 per month
Free Version
Free Trial

Pricing

No information available.
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

Muse
United States
www.muse.art/

Company Information

StepFun
United States
static.stepfun.com/blog/stepaudio3/

Alternatives

Melodea

Melodea

Audoir

Alternatives

Seed-Music

Seed-Music

ByteDance
Fugatto

Fugatto

NVIDIA

Categories

Categories

Integrations

Claude Opus 4.5
GPT-5.2
GPT-5.4 Pro
GPT-5.6 Luna
GPT‑5.4 Thinking
Gemini

Integrations

Claude Opus 4.5
GPT-5.2
GPT-5.4 Pro
GPT-5.6 Luna
GPT‑5.4 Thinking
Gemini
Claim Muse and update features and information
Claim Muse and update features and information
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Claim StepAudio 3 and update features and information