Music Majors Buy a Seat Inside Stability AI

Stability AI closed a $76 million Series B on August 25, with Sony Music Group, Universal Music Group and Warner Music Group all taking equity. Electronic Arts, AMD Ventures and Pacific Alliance Ventures joined them. The round takes funding under chief executive Prem Akkaraju to $232 million since June 2024, counting two equity rounds and convertible notes.

No valuation was disclosed. The money is earmarked for creative-production products, applied research and a professional-services arm, the company said from Los Angeles. The more durable asset on that cap table is not the cash. It is the catalogues, the studios and the distribution pipes those new shareholders already control.

All Three Majors Wrote the Same Check

Coatue, Greycroft, Kadmos Capital, Sean Parker and former Google chief executive Eric Schmidt came back for a second round under Akkaraju. They sit beside older names on the register, among them Lightspeed Venture Partners, Mantis Capital, Sound Ventures and WPP. Individual holders listed in the release include Academy Award-winning filmmaker James Cameron, Kevin Mayer, Mark Burnett, Patrick Whitesell and Robert Nelsen.

Coatue co-founder Thomas Laffont joined the board. He sits with Cameron, Parker, Greycroft co-founder Dana Settle and Akkaraju, who ran Weta Digital before taking the Stability job. Parker is executive chairman.

The company framed the raise as a vote for tools built with rights holders. Akkaraju, who replaced founder Emad Mostaque in June 2024, put it in those terms in the release.

This unmatched group of investors is an affirmation of our vision where generative AI empowers every producer, musician and storyteller. Stability is unique in the AI field because we are creative people making tools for creatives.

Prem Akkaraju, chief executive, Stability AI, Series B announcement

Three of the four entertainment checks follow pacts already on the books. Electronic Arts signed on October 23, 2025, to co-develop models, tools and workflows for its artists and developers. Universal Music Group announced a strategic alliance on October 30, 2025, to co-develop professional music-creation tools. Warner Music Group followed on November 19, 2025. Sony Music Group has no matching public product deal. Its name appears as a new investor, not as a listed co-developer.

THE SERIES B CAP TABLE

Laffont’s line in the same release was the vertical pitch in one sentence: others are building general models, he said, while Stability is building creative tools “alongside the artists, studios, and rights holders whose work defines the field.”

The company’s own account posted the round the same morning, stressing who sat in the room rather than a mark.

Today marks a new milestone for Stability AI. We've closed our Series B, bringing total funding to $232M under new leadership. This moment is more than the number, it's about who's in the room. pic.twitter.com/Wyz3J7KcyP

— Stability AI (@StabilityAI) August 25, 2026

Why Sony Can Invest and Still Sue

The three majors spent 2024 in court against the consumer song generators. The Recording Industry Association of America sued Suno and Udio that June, accusing both of training on copyrighted recordings without a license. Warner later settled with Udio and with Suno in November 2025 and took licensing deals instead. Universal settled with Udio in October 2025. Sony did not settle either case.

Sony remains a plaintiff against Suno in Massachusetts and against Udio in New York. Universal is still beside Sony on the Suno docket. Equity in Stability AI does not close those files. It buys a different posture on a different stack: a company that already publishes licensed training lists and sells enterprise cover, rather than a consumer app still arguing fair use.

Warner has been willing to sit on both sides of that line. It is an equity holder in Stability, a co-developer on music tools, and a licensing partner on Suno’s v6 models, which shipped on September 9 with BMG and Believe. Universal signed a multi-year licensing pact with ElevenLabs on September 10 for a separate fan-facing platform. The majors are placing several licensed bets at once. Stability is the one that came with a board seat and a shared cap table.

Robert Kyncl, Warner’s chief executive, wrote to staff on September 9 that talent could now take a cut from music creation as well as from consumption. He listed Stability among the partners he expects to open those streams, alongside Spotify, Udio and Klay. The memo treats generation as a new royalty event, not as a threat to be sued out of existence.

Stable Audio 3.0 Still Will Not Sing

The product sitting under that pitch is narrower than a hit-song machine. On May 20 the company released a family of open-weight music models called Stable Audio 3.0, trained on fully licensed data. Three of the four variants ship as downloadable weights. The large model stays on the API and in enterprise self-hosting.

It does not generate vocals or lyrics. That is a product choice, not a footnote. Suno and Udio built their audiences on sung tracks from a text prompt. Stable Audio 3.0 is an instrumental and sound-design kit aimed at people who already work in a DAW. A plugin and a rebuilt StableAudio.com editor followed on August 18.

THE STABLE AUDIO 3.0 FAMILY

Small’s 2 minutes compares with 11 seconds on Stable Audio Open Small and 47 seconds on Stable Audio Open. Medium and Large stretch to 6 minutes 20 seconds with per-second control, so a cue does not have to be padded with silence. The company says generation runs in under two seconds on an H200 GPU and in a few seconds on a MacBook Pro M4, as set out in the Stable Audio 3.0 technical report.

Developers can download the weights on Hugging Face for Small SFX, Small and Medium, then fine-tune with published LoRa docs. That is the Stable Diffusion habit applied to audio: put the weights out, let studios bend them on private libraries, and sell white-glove work to anyone big enough to need indemnity.

Export is the other split with the consumer apps. Udio switched downloads off on October 30, 2025, the day after its Universal settlement, then opened a 48-hour window in early November so users could save old files. Suno imposed caps on September 3: seven lifetime downloads on the free tier, 20 a month on Pro at $8, and 60 a month on Premier at $24, including tracks made before that date. Stable Audio’s pitch is that the file lives on your machine because the model does too.

The Training Set Lists 1,278,902 Recordings

If the majors bought a pipe into a hit catalogue, the published list does not show it. Stability’s own comparison page, updated September 9, posts attribution for 1,278,902 training recordings drawn from a licensed AudioSparx catalogue and Creative Commons material from Freesound. That is production music, instruments, effects and CC audio. It is not a named dump of chart recordings from Sony, Universal or Warner.

THE PUBLISHED TRAINING MIX

• AudioSparx licensed files: 806,284 tracks, instruments and effects with text metadata.
• Freesound CC-0: 266,324 recordings.
• Freesound CC-BY: 194,840 recordings.
• Freesound CC-Sampling+: 11,454 recordings.

The UMG and Warner pacts sit beside that corpus as co-development deals for professional tools, not as a public claim that Stable Audio 3.0 ingested their hit reels. Sony’s cheque is even cleaner on that point, because there is no product announcement to misread. The labels are paying for the next generation of licensed systems, and for a company that already speaks their language on indemnity, not for a consumer clone of Suno trained on their stars.

Under the Community License, users own outputs and can sell them if the organisation makes less than $1 million in annual revenue. Above that line, commercial use moves to an Enterprise license that adds legal indemnification. The hosted app starts at $12 a month. There is no download cap on what you generate.

That design is how Stability sells itself against the scrape shops without having to win a fair-use trial. It is also why the $76 million reads as a distribution deal dressed as venture. The majors get a creative-tools vendor that will not pick a fight with their lawyers. Stability gets cover, clients and a path into sessions, trailers and game pipelines that a research lab could not book on its own.

Prem Akkaraju Moved the Company to Los Angeles

The round is the second act of a leadership change, not a first cheque into a new lab. Stability was founded in London in 2019 and released Stable Diffusion in August 2022. Those image weights have been downloaded more than 350 million times, the company says, and they still define its public name. The music and games story is what the new owners are actually buying.

The London office is closed. Announcements now go out of Los Angeles. Akkaraju arrived in June 2024 after Mostaque left amid staff departures, internal conflict and lawsuits, and the board around him is built from entertainment operators rather than open-source evangelists. Rob Legato, the visual-effects supervisor, joined in March 2025 as chief pipeline architect. Brand Studio, a production platform for companies that want models locked to their own look, shipped in April 2026.

THE TWO-YEAR RESET

1. June 2024: Prem Akkaraju becomes chief executive, Sean Parker executive chairman, James Cameron a director.
2. October 23, 2025: Electronic Arts signs to co-develop game-production models and workflows.
3. October 30, 2025: Universal Music Group announces a strategic alliance on professional music tools.
4. November 4, 2025: The UK High Court hands down Getty Images (US) Inc & Ors v Stability AI Ltd.
5. November 19, 2025: Warner Music Group announces its music-tools pact.
6. May 20, 2026: Stable Audio 3.0 ships with licensed training data and open weights on three variants.
7. August 18, 2026: A DAW plugin and a rebuilt StableAudio.com editor go live.
8. August 25, 2026: The $76 million Series B closes, with Thomas Laffont joining the board.

The Getty judgment did not bless scraping. Getty dropped its primary UK copyright claim after it could not show that training happened in Britain. Justice Joanna Smith then dismissed the secondary-copyright theory that the model weights were an infringing copy, and found only limited, historic trade-mark hits where early Stable Diffusion versions, v1.x and v2.x, spat out Getty and iStock-style watermarks. Getty later got permission to appeal the secondary-copyright point. The case is the legal backdrop for a company that now wants to be booked by studios, not defined by a stock-photo fight.

Session Players Are Already Suing the Labels

The people who played on the recordings being licensed have started their own docket. The American Federation of Musicians filed an amended complaint on July 24 in the Southern District of New York against Universal Music Group, Warner Records and Atlantic Recording. The union says the labels licensed members’ recordings to Suno and Udio without pay or credit. Sony is not a defendant in that suit, because Sony has not settled with those two generators.

That case is the hidden invoice on every “responsible AI” announcement. A label can take equity in a model shop, collect a license fee, and still leave the session player off the statement. Kyncl’s creation-revenue line only holds if those new streams actually reach the people who made the records the models want to sound like. The AFM filing says that is not happening on the Suno and Udio deals. Stability has not been named in that complaint. The pattern the union is attacking is the same one the majors are now industrialising.

Akkaraju told investors they bring “not only capital, but expertise, credibility, and direct connection to artists.” Direct connection is the product the labels are selling him. Whether artists see a line item when a producer runs a Warner-flavoured LoRa, or when a game team fine-tunes Medium on a private library, is the part of the $232 million story that the term sheet does not print.

Suno still has a sung-track business and a live fight with Sony and Universal. Udio still has not restored ordinary downloads. ElevenLabs now has Universal on a fan platform of its own. Stability has the open weights, the published training list, the DAW plugin, and a cap table that looks like a rights-holder committee. The $76 million pays to keep that committee in the same room while the next licensed models, the ones that may finally take a vocal, get built under their eyes.

Sony can keep suing the scrape shops in Boston and still hold Stability stock. Those are two different bets on the same fear: that music will be generated either way, and the only open question is who gets paid when it is.

Frequently Asked Questions

What Did the UK High Court Decide in Getty Images v Stability AI?

On November 4, 2025, Justice Joanna Smith dismissed Getty’s remaining secondary-copyright claim, holding that Stable Diffusion’s weights are not an “infringing copy” under the Copyright, Designs and Patents Act 1988 because they do not store or reproduce the works. Getty had already dropped its primary training and output copyright claims, and its database-right claims, after it could not prove the model was trained in the United Kingdom. The court found only limited historic trade-mark infringement in early v1.x and v2.x outputs that carried Getty or iStock-style watermarks. Getty later received permission to appeal the secondary-copyright ruling.

Who Can Use Stable Audio 3.0 Commercially for Free?

Organisations with under $1 million in annual revenue can generate, own and sell outputs under the Stability AI Community License, including on self-hosted Small, Small SFX and Medium weights, with no download cap. Organisations above that revenue line need an Enterprise license, which is also the tier that adds legal indemnification. The hosted web app is a separate paid product that starts at $12 a month and does not replace those license terms.

Which Stable Audio 3.0 Models Can You Run on Your Own Hardware?

Small SFX, Small and Medium are open-weight releases, so they can run locally, including on-device composition on Small and on-device sound effects on Small SFX. Medium is the open variant that reaches 6 minutes 20 seconds. Large stays behind the Stability API and enterprise self-hosting. The company also published LoRa training documentation for Small and Medium, so a studio can adapt those two weights on its own library without sending audio back to Stability’s servers.

Did Sony Music Sign a Product Partnership Before the Round?

No public co-development or catalogue pact with Sony Music Group was announced before the Series B, unlike the October 23, 2025 Electronic Arts deal, the October 30, 2025 Universal Music Group alliance and the November 19, 2025 Warner Music Group pact. Sony appears in the August 25 release as a new investor. It remains a plaintiff in the copyright cases against Suno and Udio, which Warner and, in Udio’s case, Universal have already settled.