Top Generative AI Startups in San Francisco

Browse 5 startups in San Francisco working in Generative AI. Every listing below is matched on location and skill set so you can discover the right company faster. Compare profiles and reach out directly.

Pixley AI

San Francisco

Children’s entertainment is in an awkward moment. YouTube and Netflix produce more content than any kid could watch in a lifetime, but parents increasingly find it overstimulating, repetitive, and short on the kind of imaginative play that earlier generations took for granted. Pixley AI, a Y Combinator Fall 2025 startup, is betting that the answer […]

AI AI-Enhanced Learning Generative AI

Anto Biosciences

San Francisco

Drug development has long been hobbled by a quietly devastating problem: the same medicine that works for one patient can prove ineffective – or even toxic – for the next. Increasingly, the suspect is the trillions of microbes living inside us. Anto Biosciences, a Y Combinator Fall 2025 company, believes microbiome drug development can finally […]

AI Biotech Drug discovery

Absurd

San Francisco

The pitch for AI video has been around for years, but the gap between viral demos and ads that brands will actually run on television, billboards, and paid social has remained stubbornly wide. Absurd, a Y Combinator Fall 2025 company, thinks it has cracked the operating model that closes that gap. The startup describes itself […]

Advertising Generative AI Marketing

Bear

San Francisco

For two decades, the marketing stack has been organized around a familiar funnel: someone searches Google, lands on a website, and converts through a carefully optimized series of pages. That funnel is starting to break. Increasingly, prospective customers do their research inside ChatGPT, Perplexity, and other AI agents – which then surface a small set […]

B2B Generative AI SaaS

Amboras

San Francisco

The e-commerce playbook of the 2010s – pick a Shopify theme, hire an agency, tweak funnels, and run paid ads – is looking increasingly expensive and slow against a new generation of AI-native competitors. Amboras is positioning itself at the front of that shift. The Y Combinator Spring 2026 startup is building an autonomous AI […]

B2B E-commerce Generative AI