# CassetteAI Music Generator

> CassetteAI's fast, low-cost music generator via fal.ai. Produces 10 to 180 seconds of music from a text prompt. Returns a WAV file.

- **Provider**: fal
- **Model ID**: cassetteai/music-generator
- **Category**: music_generation
- **Credits**: from 47 for the default configuration — varies by input, see Pricing
- **Pricing Type**: formula

## API Endpoint

Base URL: https://api.core.today/v1

### Create Prediction
POST /predictions

### Get Status
GET /predictions/{job_id}

### Cancel
DELETE /predictions/{job_id}

## Authentication

Header: `X-API-Key: YOUR_API_KEY`

## Input Parameters

- `duration` (integer, **required**): Duration of the generated music in seconds (10-180). Billed per second. (Default: `60`; Range: min: 10, max: 180)
- `prompt` (string, **required**): The prompt to generate music from (genre, mood, instruments, tempo).

## Example Request

```json
{
  "model": "cassetteai/music-generator",
  "input": {
    "duration": 60,
    "prompt": "Chill lo-fi hip hop beat with warm piano chords, vinyl crackle and a laid-back drum groove"
  }
}
```

## Response Format

```json
{
  "job_id": "abc123",
  "status": "pending",
  "provider": "fal",
  "model": "cassetteai/music-generator",
  "created_at": "2026-01-01T00:00:00Z",
  "result": null,
  "error": null,
  "credits_used": null
}
```

Status values: `pending`, `processing`, `completed`, `failed`, `cancelled`

When the job is `completed`, `result` holds the output URL(s) or data and `credits_used` the net credits charged. When it is `failed`, `error` and `error_code` say why and the charge is refunded.

## Usage Flow

1. POST /predictions with model and input → receive job_id
2. Poll GET /predictions/{job_id} until status is `completed` or `failed`
3. Result contains output URL(s) or data

## Pricing

- Formula: `rate * duration` credits
  - `duration`: the `duration` input (default 60)
  - `rate`: 0.775

Default configuration: 47 credits.

These are list prices. The amount charged is rounded, and large charges are discounted progressively. `POST /predictions/estimate` with the same `model` and `input` returns the charge for that input without creating a job (an estimate when the price depends on the output).

## Output Type

json

## Tags

music-generation, text-to-music, instrumental, low-cost, cassetteai

## Documentation

https://fal.ai/models/cassetteai/music-generator