--- title: RunAPI Music API - AI Music Generation API | RunAPI description: Create full tracks, instrumentals, and stems through one AI music generation API. url: https://runapi.ai/music.md canonical: https://runapi.ai/music locale: en site: RunAPI image: https://runapi.ai/assets/opengraph-f702f2b1.png alternates: en: https://runapi.ai/music zh-CN: https://runapi.ai/zh-CN/music es: https://runapi.ai/es/music ja: https://runapi.ai/ja/music de: https://runapi.ai/de/music fr: https://runapi.ai/fr/music pt-BR: https://runapi.ai/pt-BR/music ko: https://runapi.ai/ko/music it: https://runapi.ai/it/music nl: https://runapi.ai/nl/music pl: https://runapi.ai/pl/music tr: https://runapi.ai/tr/music zh-TW: https://runapi.ai/zh-TW/music zh-HK: https://runapi.ai/zh-HK/music ar: https://runapi.ai/ar/music x-default: https://runapi.ai/music --- > HTML version: https://runapi.ai/music > Site index for agents: https://runapi.ai/llms.txt # AI Music Generation API Create full tracks, instrumentals, and stems through one AI music generation API. - [Get API Key](https://runapi.ai/login) - [Browse Models](https://runapi.ai/models.md) 14 music models · full tracks with vocals · pay per second ## Playground Available models: Producer/fuzz-0.8 ($0.13 / track), Suno/suno-v4 ($0.17 / track) ## Listen to AI-Generated Tracks - **Cinematic Orchestral — Epic** - Orchestral, Trailer, Heroic - 3:24 - Suno v4 - **Lo-Fi Study Loop** - Lo-fi, Chill, Instrumental - 2:48 - Suno v4 - **Synthwave Night Drive** - Synthwave, Retro, Driving - 4:02 - Udio 2 - **Acoustic Folk Sunrise** - Folk, Acoustic, Warm - 3:10 - Udio 2 ## Everything the music endpoint can do - **Text to Music** - Describe genre, mood, and tempo and get a finished track — with or without vocals. - **Extend Music** - Continue an existing track to a target length while keeping key, tempo, and arrangement. - **Separate Stems** - Split a render into vocals, drums, bass, and other for mixing or re-scoring. - **Generate Lyrics** - Draft structured lyrics with verse and chorus markers, then feed them straight into a vocal render. ## Music models on one key | Model | Provider | Price | | --- | --- | --- | | Producer/fuzz-0.8 | Producer | $0.13 / track | | Suno/suno-v4 | Suno | $0.17 / track | [View all 14 music models](https://runapi.ai/models.md) ## Quickstart ### Generate a track #### curl ```bash curl https://runapi.ai/api/v1/producer/text_to_music \ -H "Authorization: Bearer $RUNAPI_API_KEY" \ -H "Content-Type: application/json" \ -d '{"model":"fuzz-0.8","vocal_mode":"instrumental","prompt":"Soft piano with gentle percussion."}' ``` #### Python ```python import json import os import requests response = requests.post( "https://runapi.ai/api/v1/producer/text_to_music", headers={"Authorization": f"Bearer {os.environ['RUNAPI_API_KEY']}"}, json=json.loads("{\"model\":\"fuzz-0.8\",\"vocal_mode\":\"instrumental\",\"prompt\":\"Soft piano with gentle percussion.\"}") ) response.raise_for_status() print(response.json()) ``` #### Node.js ```javascript const response = await fetch("https://runapi.ai/api/v1/producer/text_to_music", { method: "POST", headers: { "Authorization": "Bearer " + process.env.RUNAPI_API_KEY, "Content-Type": "application/json" }, body: JSON.stringify({"model":"fuzz-0.8","vocal_mode":"instrumental","prompt":"Soft piano with gentle percussion."}) }); console.log(await response.json()); ``` #### Go ```go package main import ( "io" "net/http" "os" "strings" ) func main() { payload := strings.NewReader("{\"model\":\"fuzz-0.8\",\"vocal_mode\":\"instrumental\",\"prompt\":\"Soft piano with gentle percussion.\"}") request, err := http.NewRequest("POST", "https://runapi.ai/api/v1/producer/text_to_music", payload) if err != nil { panic(err) } request.Header.Set("Authorization", "Bearer "+os.Getenv("RUNAPI_API_KEY")) request.Header.Set("Content-Type", "application/json") response, err := http.DefaultClient.Do(request) if err != nil { panic(err) } defer response.Body.Close() io.Copy(os.Stdout, response.Body) } ``` #### Response ```json { "id": "tsk_example", "status": "processing" } ``` ## Four Steps to Your First Generation **How it works** 1. **Get Your API Key** - One key for all music generation models. 2. **Describe Your Track** - Write a prompt with genre, mood, tempo, and instrumentation details. 3. **Generate** - POST to /api/v1/producer/text_to_music. Choose from the available music models. 4. **Stream or Download** - Get your generated track as MP3/WAV. Stems separation available. ## Why Developers Choose RunAPI - **One Key, All Models** - Stop juggling API keys. One integration gives you access to 230+ models across all providers. - **15-25% Cost Savings** - Our volume agreements with providers mean lower prices than going direct. No markup on top. - **Automatic Failover** - If a provider goes down, we route to the next best option. Your app stays up. - **OpenAI-Compatible** - Drop-in replacement for OpenAI SDK. Change one line of code to access any model. - **Real-Time Billing** - Pay only for what you use. Per-request pricing with no minimums. Track costs per model, per project. - **Data Privacy** - Our Privacy Policy explains how request data and generated content are processed and retained. ### Explore ## More AI APIs - [Video API](https://runapi.ai/models?modality=video) - Generate, edit, and upscale video with 80 models [Learn more](https://runapi.ai/models?modality=video) - [Image API](https://runapi.ai/models?modality=image) - Create and transform images with 49 models [Learn more](https://runapi.ai/models?modality=image) - [Audio API](https://runapi.ai/models?modality=audio_music) - Create speech and sound with 31 models [Learn more](https://runapi.ai/models?modality=audio_music) - [LLM API](https://runapi.ai/models?modality=text) - Chat completions with 66 language models [Learn more](https://runapi.ai/models?modality=text) ## What teams build with it - **Background Music**: Score product videos and demos with cleared, generated tracks instead of a stock library. - **Podcasts**: Generate intros, stingers, and bed music that match a show's tone across every episode. - **Video Soundtracks**: Pair with the video endpoint: generate the clip, then score it to the exact runtime. - **Game Audio**: Produce looping ambience per level or biome, and re-render on a theme change. ## RunAPI vs alternatives | Feature | RunAPI | Suno Direct | Replicate | | --- | --- | --- | --- | | Music models | 14 | Unavailable | Unavailable | | Pricing | $0.13 / track | Unavailable | Unavailable | | Stems separation | Yes | Unavailable | Unavailable | | Unified billing | Yes | Unavailable | Unavailable | | MCP server | Yes | Unavailable | Unavailable | | Provider failover | Yes | Unavailable | Unavailable | ## Music API questions ### How is music billed? Per second of rendered audio. A 30-second track on Suno lands near a dollar, and failed renders are never charged. ### Can I get vocals? Yes. Leave instrumental false and pass lyrics, or let the model write them with the lyrics endpoint first. ### Can I get separate stems? Yes. Use task_type separate_stems on a finished render to get vocals, drums, bass, and other as files. ### How long can a track be? Up to 4 minutes in one call on Suno and Udio. Longer pieces are built by extending an existing render. ### Can I use the output commercially? That depends on the model provider's license, which the catalog links per model. RunAPI adds no extra restriction. ### How long does a render take? Roughly 40-90 seconds for a 30-second track. Use a webhook rather than polling the task. ## Score your product with generated music Suno and Udio behind one key, billed per second. Start free, no credit card required. - [Get API Key](https://runapi.ai/login) - [Read the Docs](https://runapi.ai/docs/guides) --- ## More from RunAPI - [Home](https://runapi.ai/.md) ### Product - [Model Catalog](https://runapi.ai/models.md) - [Pricing](https://runapi.ai/pricing.md) - [Providers](https://runapi.ai/models#all-models) ### Developers - [Documentation](https://runapi.ai/docs/guides) - [SDKs](https://runapi.ai/sdk.md) - [CLI](https://runapi.ai/cli.md) - [MCP Server](https://runapi.ai/mcp.md) ### Guides - [Claude Code vs Cursor](https://runapi.ai/claude-code-vs-cursor.md) - [Cursor API Setup](https://runapi.ai/cursor-api-setup.md) - [RunAPI vs OpenRouter](https://runapi.ai/openrouter-alternative.md) ### Company - [Enterprise](https://runapi.ai/contact.md) - [Contact](https://runapi.ai/contact.md) ### Legal - [Terms](https://runapi.ai/terms.md) - [Privacy](https://runapi.ai/privacy.md) - [Site index for agents](https://runapi.ai/llms.txt) Contact: contact@runapi.ai ## Structured data ```json [ { "@context": "https://schema.org", "inLanguage": "en", "@type": "WebSite", "name": "RunAPI", "url": "https://runapi.ai/", "potentialAction": { "@type": "SearchAction", "target": { "@type": "EntryPoint", "urlTemplate": "https://runapi.ai/models?q={search_term_string}" }, "query-input": "required name=search_term_string" } }, { "@context": "https://schema.org", "inLanguage": "en", "@type": "Organization", "name": "RunAPI", "url": "https://runapi.ai/", "logo": { "@type": "ImageObject", "url": "https://runapi.ai/icon.svg" }, "sameAs": [ "https://github.com/runapi-ai" ] } ] ```