# Sorrell's Fund Bets Big on AI Video Startup Higgsfield

> Martin Sorrell's venture fund joins a $400 million Series B for an AI video company targeting agencies and brands.
- Title: Sorrell's Fund Bets Big on AI Video Startup Higgsfield
- Summary: Martin Sorrell's venture fund joins a $400 million Series B for an AI video company targeting agencies and brands. S4S Ventures sees AI video generation as…
- Keywords: martin sorrell, s4s ventures, higgsfield, ai video, series b funding, dst global, ai-generated content, brand marketing, agencies, content production, venture capital, Sorrell's
- Source: Adweek — https://adweek.com/dealroom/martin-sorrells-venture-fund-backs-ai-video-startup-higgsfield
- Author: Trishla Ostwal
- Published: 2026-09-22T09:50:48+00:00
- Read time: 1 min
- Topics: martin sorrell, s4s ventures, higgsfield, ai video, series b funding, dst global, ai-generated content, brand marketing, agencies, content production, venture capital
## Sorrell backs AI video startup
S4S Ventures, co-founded by Sir Martin Sorrell, invested in Higgsfield, which just closed a $400 million Series B at a $5.4 billion valuation in August.
## Higgsfield solves content speed
S4S partner Sanja Partalo said Higgsfield stood out for helping brands produce huge amounts of content quickly and agilely, a key challenge for marketers.

> There's a lot of empathy and knowledge built into what they've created that makes this product particularly suited for an enterprise use case within an agency.
## S4S has multiple AI bets
Beyond Higgsfield, S4S has backed Runway for video generation, Newton Research for marketing analytics, and Olyzon for CTV ad decisions.
## Higgsfield already works at scale
The three-year-old startup works with 390 Fortune 500 companies and generates over 70% of revenue from commercial use. It launched Ads Multiplier in August to turn existing creatives into AI variations.
## AI slop backlash is real
Brands like Coca-Cola and Baggu faced criticism for AI-generated ads, and audiences are fatigued by low-quality AI content on social media feeds.
## Quality improvements will win over audiences
Sorrell believes people will become immune to AI backlash quickly. Higgsfield's latest products generate photorealistic content viewers cannot distinguish from traditional work.

> People will become immune to it pretty quickly.
## Key takeaway

S4S Ventures sees AI video generation as the solution to brands' need for fast, scaled content production, betting that quality improvements will overcome audience skepticism.