Stability AI closes $76M Series B backed by Universal Music, Sony Music, and Warner Music
The AMW Read
Major labels shift from litigation against AI music platforms to direct equity investment in Stability AI, tying model licensing terms to cap-table influence while artist-payout disputes remain unresolved.
Stability AI closes $76M Series B backed by Universal Music, Sony Music, and Warner Music
Stability AI announced on August 25 that it closed a $76 million Series B round, with new investors including Electronic Arts, AMD Ventures, and — for the first time as direct equity holders — Universal Music Group, Sony Music Group, and Warner Music Group. Per the AI Market Watch index, this brings Stability AI's tracked funding to roughly $231 million, including an $80 million round in June 2024 and a WPP strategic investment in March 2025 (coverage limited to companies matched in AMW's index, not a full financing history). The capital funds creative-production tools, applied research, and professional services under CEO Prem Akkaraju, who took over in mid-2024 after founder Emad Mostaque departed and several core Stable Diffusion researchers exited.
The round marks a reversal for the three labels, which in June 2024 sued AI music platforms Suno and Udio over training on copyrighted recordings; Warner and Universal have since settled with those platforms while Sony's suit continues. Stability AI's route onto the labels' cap table ran through licensing rather than litigation: co-development agreements signed with Universal and Warner in late 2025, followed by Stable Audio 3.0 in May 2026 — which the company says trains only on licensed audio and carries commercial indemnification — and a DAW plugin shipped this month. That structure gives labels a stake in how AI-generated music royalties get routed, instead of leaving licensing terms to be set unilaterally by AI vendors.
The split outcome inside Stability AI's own alumni network is instructive: researchers who left in 2024 to found Black Forest Labs reached a $3.25 billion valuation by December 2025 on Nvidia- and a16z-backed capital plus a Meta licensing deal, while Stability AI rebuilt around enterprise licensing and entertainment-industry governance instead. For builders, "trained on licensed data" is becoming a sellable enterprise feature rather than just a legal shield. For investors, the underlying payout mechanics remain contested — the U.S. musicians' union sued Universal and Warner in June over undistributed AI-settlement proceeds, meaning rights-holder economics are still being litigated even as equity deals close.
