An AI agency builds or advises on systems that use artificial intelligence: a consultancy that works out where AI pays off in your business, a developer that builds an agent or a chatbot, or a data science team that trains a model on your own data. The names overlap, so this area is split by what the firm actually delivers.
Start with AI consulting firms if you are not yet sure what to build. Go straight to AI agent, generative AI or chatbot developers when the use case is clear, and to machine learning companies when the job is prediction or computer vision on your own data.
Each listing shows where the firm is based, the models and frameworks it says it works with, and its partner status where a vendor directory confirms it. Ask every shortlisted firm for a comparable project, who owns the code and the prompts, how they measure accuracy, and what running costs to expect after launch.