Top Machine Learning in California

Making AI systems you can rely on. Anthropic is an AI safety and research company. We build reliable, interpretable, and steerable AI systems.

OpenAI is an AI research and deployment company. Our mission is to ensure that artificial general intelligence benefits all of humanity. We are building safe and beneficial AGI, but will also consider our mission fulfilled if our work aids others to achieve this outcome.

Perplexity AI is a San Francisco-based company founded in 2022, specializing in an AI-powered answer engine that combines real-time web search with large language models to deliver accurate, cited responses to user queries. Perplexity bridges traditional search and AI, powering curiosity through direct answers, fact-checking, and tools for research, writing, and data analysis — ideal for professionals in tech, startups, and beyond.