Suno Releases "v4" — Major Gains in Vocal Quality and Song Structure

Suno announced its new music generation model, “v4.” It features clearer audio quality, more intelligible lyrics, and more dynamic song structure than before, and was launched alongside a new “Remaster” feature that lets users upgrade existing songs to v4 quality.

Details

• Improved audio and lyrics: Achieves clearer audio quality and more intelligible lyrics than previous models
• Evolved song structure: Supports more dynamic, lively song arrangements
• Remaster feature: A new feature that lets users upgrade songs previously generated with earlier versions, such as v3, to v4 quality
• Timing context: The announcement came amid ongoing lawsuits from major labels, and coincided with reports that renowned producer Timbaland had joined as a strategic advisor, along with a partnership with Audible Magic and the appointment of a new Chief Product Officer (CPO)

What happened next

v4 significantly raised the quality of Suno’s music generation, further expanding both professional and amateur use. Half a year later, in May 2025, “v4.5” arrived, supporting song generation of up to eight minutes and continuing the pace of feature improvements.