Galileo.AI

Galileo is an AI observability and evaluation platform founded in 2022 and headquartered in San Francisco, California. The company was co-founded by Vikram Chatterji, Yash Sheth, and Atindriyo Sanyal, with a focus on helping engineering and data science teams build and maintain reliable large language model (LLM) applications.

Galileo's core product provides tools for evaluating LLM outputs, detecting hallucinations, monitoring production performance, and applying guardrails to generative AI systems. The platform supports workflows across the full LLM development lifecycle, from prompt experimentation and fine-tuning evaluation to real-time production monitoring. It is used by teams building applications on top of models from providers such as OpenAI, Anthropic, and others.

The company raised a $15 million Series A round in 2023, bringing its total disclosed funding to approximately $17 million. Galileo operates with a team in the 11–50 employee range and has positioned itself within the emerging LLM operations and observability market, competing with tools such as Weights & Biases, Arize AI, and LangSmith.