Top Artificial Intelligence Startups in California, US

We’re building Reflow, a workforce and workflow intelligence platform that helps teams understand and improve how work gets done.

Apollo Research is focused on reducing dangerous capabilities in advanced AI systems, especially deceptive behaviors. We design AI model evaluations and conduct interpretability research to better understand state-of-the-art AI models. Our governance team provides global policymakers with expert technical guidance.

Daily Lowdown is reimagining how people stay informed. We built an AI-native journalism platform that delivers a beautifully written, fully personalised daily email newsletter — Monday to Friday — covering exactly the topics each reader cares about most. Every morning at 8am local time, our readers wake up to a concise briefing tailored entirely to them. They choose up to six topics — anything from climate tech and geopolitics to Formula 1 and personal finance — and our AI scours the internet for the latest developments, synthesises what matters, and writes it in the kind of clear, engaging prose you'd expect from a great journalist. No noise, no algorithm-driven outrage, no doom-scrolling required. We're bootstrapped, remote-first, and deeply focused on one thing: making the daily news habit feel effortless and genuinely worth it.

Thresh Consulting is a modern digital consulting firm built for the AI era—where strategy, execution, and craft come together to deliver real outcomes with speed. Our specialty is helping organizations design, build, and scale digital products that create exceptional customer experiences and drive value.

Welocalize is a company that provides services to transform content into multiple languages. We have a network of over 250,000 linguistic resources and operate in North America, Europe, and Asia. We offer high-quality training data solutions for machine learning by combining technology and human intelligence to collect, annotate, and evaluate all types of content.