# 01Router — Gateway API reference

> A single REST API for image, video, audio and chat models across fal.ai, Replicate, WaveSpeedAI, KIE AI, APIMart, EvoLink, AtlasCloud, Vercel AI Gateway and OpenRouter.

Base URL: https://01router.com/api/v1
Documentation: https://01router.com/docs
Index: https://01router.com/docs/llms.txt?locale=en
Full reference: https://01router.com/docs/llms-full.txt?locale=en

Generation, task history, cancellation and chat require a key. Catalogs, prompts and quotes are public. Keep the API key on your server.

Responses are illustrative. IDs, usage, prices and results depend on the actual request.


## Model reference

Source: https://01router.com/docs/models/suno-v6

# Suno V6 API

Suno V6 music generation: full songs with vocals or instrumentals from a description, or your own lyrics and style in custom mode. Each request returns two tracks.

`POST /api/v1/generations`

Bearer API key

## Input parameters

| Field | Type | Required | Description | Constraints |
| --- | --- | --- | --- | --- |
| model | string | yes | Model slug from the catalog. Project keys may use a project-specific model slug. | options: [   "suno-v6" ] |
| input | object | yes | Model-specific input object. See the selected model reference for required fields, defaults and limits. |  |
| provider | string | no | Optional provider slug. Omit for automatic routing; project settings may pin the provider. |  |
| project | string | no | Optional project ID. Use its published model catalog and routing configuration. |  |
| callback_url | string<uri> | no | Public HTTPS URL, up to 1,000 characters. Receives the final generation object. Private network addresses are rejected. |  |
| input.prompt | string | no | Song description (simple mode) or lyrics (custom mode) |  |
| input.custom_mode | boolean | no | Use your own lyrics, style and title | default: false |
| input.instrumental | boolean | no |  | default: false |
| input.style | string | no | Custom mode only, e.g. "dream pop, female vocals" |  |
| input.title | string | no | Custom mode only |  |
| input.negative_tags | string | no |  |  |
| input.vocal_gender | enum | no |  | options: [   "m",   "f" ] |
| input.duration | integer | no | Custom mode only | min: 10; max: 360 |

## Response fields

| Field | Type | Required | Description | Constraints |
| --- | --- | --- | --- | --- |
| id | string | — | Generation ID returned by the create request. |  |
| object | "generation" | — | generation |  |
| model | string | — | Model slug from the catalog. Project keys may use a project-specific model slug. |  |
| type | video \| image \| audio \| chat | — |  |  |
| provider | string | — | Optional provider slug. Omit for automatic routing; project settings may pin the provider. |  |
| status | string | — | queued / processing / succeeded / failed. Stop polling on succeeded or failed. |  |
| input | object | — | Model-specific input object. See the selected model reference for required fields, defaults and limits. |  |
| outputs | string[] | — | Result file URLs. Empty until available; download promptly because URLs may expire. |  |
| error | string \| null | — | Error message on failure; null otherwise. |  |
| credits | number | — | Credits charged for this generation; zero after a refund. |  |
| price_usd | number | — | Price of this generation in USD; zero after a refund. |  |
| created_at | string | — | Creation time in ISO 8601 format. |  |
| completed_at | string \| null | — | Completion time in ISO 8601 format, or null while running. |  |

## cURL

```bash
curl 'https://01router.com/api/v1/generations' \
  -H "Authorization: Bearer $API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "suno-v6",
  "input": {
    "prompt": "A cinematic landscape at sunrise.",
    "custom_mode": false,
    "instrumental": false
  }
}'
```

## 200 · application/json

```json
{
  "id": "gen_example",
  "object": "generation",
  "model": "suno-v6",
  "type": "audio",
  "provider": "kie",
  "status": "processing",
  "input": {
    "prompt": "A cinematic landscape at sunrise.",
    "custom_mode": false,
    "instrumental": false
  },
  "outputs": [],
  "error": null,
  "credits": 100,
  "price_usd": 1,
  "created_at": "2026-10-25T08:00:00.000Z",
  "completed_at": null
}
```

## Usage notes

- Poll at intervals of at least 3 seconds. A 504 from the synchronous image endpoint means the task may still be running: poll its error.id instead of submitting it again.


## Endpoints for this model

- [POST /api/v1/generations](https://01router.com/docs/llms-full.txt?locale=en&section=create): Create a generation
- [GET /api/v1/generations/{id}](https://01router.com/docs/llms-full.txt?locale=en&section=poll): Get the result
- [POST /api/v1/generations/{id}/cancel](https://01router.com/docs/llms-full.txt?locale=en&section=cancel): Cancel a task
- [POST /api/v1/quote](https://01router.com/docs/llms-full.txt?locale=en&section=quote): Quote
- [GET /api/v1/models/{slug}](https://01router.com/docs/llms-full.txt?locale=en&section=model-detail): Get one model

For /generations and /quote, put these parameters inside input. For /images/generations, put them at the top level. Chat parameters go at the top level of /chat/completions.

Select a provider to see its effective parameter limits. Automatic routing chooses a provider that supports your input. Examples include defaults and required inputs; replace example media URLs with accessible files.

### Provider parameter schemas

```json
[
  {
    "provider": "kie",
    "params": [
      {
        "name": "prompt",
        "type": "text",
        "label": "Prompt / lyrics",
        "description": "Song description (simple mode) or lyrics (custom mode)",
        "maxLength": 5000
      },
      {
        "name": "custom_mode",
        "type": "boolean",
        "label": "Custom mode",
        "description": "Use your own lyrics, style and title",
        "default": false
      },
      {
        "name": "instrumental",
        "type": "boolean",
        "label": "Instrumental",
        "default": false
      },
      {
        "name": "style",
        "type": "string",
        "label": "Style",
        "description": "Custom mode only, e.g. \"dream pop, female vocals\"",
        "maxLength": 1000
      },
      {
        "name": "title",
        "type": "string",
        "label": "Title",
        "description": "Custom mode only",
        "maxLength": 80
      },
      {
        "name": "negative_tags",
        "type": "string",
        "label": "Exclude styles"
      },
      {
        "name": "vocal_gender",
        "type": "enum",
        "label": "Vocal gender",
        "options": [
          "m",
          "f"
        ]
      },
      {
        "name": "duration",
        "type": "integer",
        "label": "Duration (s)",
        "description": "Custom mode only",
        "min": 10,
        "max": 360
      }
    ]
  },
  {
    "provider": "apimart",
    "params": [
      {
        "name": "prompt",
        "type": "text",
        "label": "Prompt / lyrics",
        "description": "Song description (simple mode) or lyrics (custom mode)",
        "maxLength": 5000
      },
      {
        "name": "custom_mode",
        "type": "boolean",
        "label": "Custom mode",
        "description": "Use your own lyrics, style and title",
        "default": false
      },
      {
        "name": "instrumental",
        "type": "boolean",
        "label": "Instrumental",
        "default": false
      },
      {
        "name": "style",
        "type": "string",
        "label": "Style",
        "description": "Custom mode only, e.g. \"dream pop, female vocals\"",
        "maxLength": 1000
      },
      {
        "name": "title",
        "type": "string",
        "label": "Title",
        "description": "Custom mode only",
        "maxLength": 80
      },
      {
        "name": "negative_tags",
        "type": "string",
        "label": "Exclude styles"
      },
      {
        "name": "vocal_gender",
        "type": "enum",
        "label": "Vocal gender",
        "options": [
          "m",
          "f"
        ]
      },
      {
        "name": "duration",
        "type": "integer",
        "label": "Duration (s)",
        "description": "Custom mode only",
        "min": 10,
        "max": 360
      }
    ]
  },
  {
    "provider": "evolink",
    "params": [
      {
        "name": "prompt",
        "type": "text",
        "label": "Prompt / lyrics",
        "description": "Song description (simple mode) or lyrics (custom mode)"
      },
      {
        "name": "custom_mode",
        "type": "boolean",
        "label": "Custom mode",
        "description": "Use your own lyrics, style and title",
        "default": false
      },
      {
        "name": "instrumental",
        "type": "boolean",
        "label": "Instrumental",
        "default": false
      },
      {
        "name": "style",
        "type": "string",
        "label": "Style",
        "description": "Custom mode only, e.g. \"dream pop, female vocals\""
      },
      {
        "name": "title",
        "type": "string",
        "label": "Title",
        "description": "Custom mode only"
      },
      {
        "name": "negative_tags",
        "type": "string",
        "label": "Exclude styles"
      },
      {
        "name": "vocal_gender",
        "type": "enum",
        "label": "Vocal gender",
        "options": [
          "m",
          "f"
        ]
      },
      {
        "name": "duration",
        "type": "integer",
        "label": "Duration (s)",
        "description": "Custom mode only",
        "min": 10,
        "max": 360
      }
    ]
  },
  {
    "provider": "atlascloud",
    "params": [
      {
        "name": "prompt",
        "type": "text",
        "label": "Prompt / lyrics",
        "description": "Song description (simple mode) or lyrics (custom mode)",
        "maxLength": 3000
      },
      {
        "name": "custom_mode",
        "type": "boolean",
        "label": "Custom mode",
        "description": "Use your own lyrics, style and title",
        "default": false
      },
      {
        "name": "instrumental",
        "type": "boolean",
        "label": "Instrumental",
        "default": false
      },
      {
        "name": "style",
        "type": "string",
        "label": "Style",
        "description": "Custom mode only, e.g. \"dream pop, female vocals\"",
        "maxLength": 500
      },
      {
        "name": "title",
        "type": "string",
        "label": "Title",
        "description": "Custom mode only",
        "maxLength": 200
      },
      {
        "name": "negative_tags",
        "type": "string",
        "label": "Exclude styles",
        "maxLength": 500
      },
      {
        "name": "vocal_gender",
        "type": "enum",
        "label": "Vocal gender",
        "options": [
          "m",
          "f"
        ]
      },
      {
        "name": "duration",
        "type": "integer",
        "label": "Duration (s)",
        "description": "Custom mode only",
        "min": 10,
        "max": 360
      }
    ]
  }
]
```

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