Suno V4.5

Suno V4.5 is a generative music model designed to produce high-fidelity, studio-quality audio from text prompts. Released as a major upgrade to the Suno platform, it introduced the capability to generate complete tracks up to eight minutes long in a single pass. The model features enhanced vocal expressiveness, including improved vibrato and emotional range, and supports a library of over 1,200 musical styles for complex genre mashups.

Key Capabilities

The V4.5 series introduced professional-grade production tools such as Add Vocals, which layers AI-generated voices onto uploaded instrumentals, and Add Instrumentals, which builds arrangements around existing vocal recordings. A new Prompt Helper expanded input capacity to 1,000 characters, enabling more granular control over musical structure, instrumentation, and atmospheric detail.

Additional updates include the ability to combine Covers and Personas to remix vocal identities and musical styles simultaneously. The model's output is optimized for 44.1 kHz audio with reduced digital artifacts, and it includes a remastering feature to upgrade tracks generated with earlier Suno versions to modern quality standards.