API.box AI Music API

API.box provides an affordable, unofficial API for Suno AI music generation, enabling developers and businesses to integrate text-to-music capabilities into applications, websites, and creative workflows. The service wraps Suno AI models behind a third-party API layer with enhanced features including vocal separation, AI-generated lyrics, timestamped lyrics, and multiple download formats designed for both development and production use.

Key Features

• Multiple AI model support: The API supports Suno models V4.5, V4, and V3.5, giving developers flexibility to choose the appropriate version for their use case. New model versions are continuously integrated as they become available.
• Music duration extension: The extend feature increases track length without altering the original tone or style. Users can upload existing audio files to generate seamless extended versions that stay true to the initial composition.
• Multi-format downloads: Generated tracks are downloadable in MP3, WAV, and MP4 formats. WAV delivers high-quality audio for post-production, while MP4 is optimized for social media and promotional channels.
• Vocal removal: The vocal separation feature isolates vocals from instrumentals, supporting remixing, karaoke applications, and stem-based audio production.
• AI lyrics generation: The built-in AI Lyrics Generator produces structured, context-aware lyrics that guide the model toward more coherent and expressive music compositions.
• Timestamped lyrics for synchronized playback: The API supports timed lyrics that sync precisely with music timing, suitable for karaoke displays, lyric videos, and streaming services.

Developer Experience

• Fast streaming output: The API can return generated music in as fast as 20 seconds using streaming responses. The infrastructure supports high concurrency for large-scale deployments.
• Watermark-free commercial use: All generated audio is delivered without watermarks, making the API suitable for commercial projects in content creation, marketing, and public distribution.
• Documentation and support: API.box provides API documentation covering authentication, endpoints, and parameters. Technical support is available for integration across Python and other programming languages.

Pricing

API.box operates on a credit-based pricing model with transparent usage reporting through its dashboard. Purchased credits do not expire, and refunds are supported. Detailed pricing is available after account registration.

Intended Users

The API is designed for developers building music applications, game developers requiring dynamic soundtrack generation, content creators producing background music, and businesses integrating AI-generated audio into their products or marketing materials.

Limitations

As an unofficial third-party wrapper, API.box is not affiliated with or endorsed by Suno. The service depends on upstream API availability and may be impacted by changes to Suno's access policies. Users should review the terms of service regarding acceptable use and commercial licensing for AI-generated content.