DomainsGPT is an AI tool that generates brandable and memorable domain names using the power of OpenAI, Vercel, and Edge Functions. It offers a variety of TLDs, including .com, .io, .co, .ai, .app, and suffixes with GPT. Users can choose from different types of names, such as brandable names, two-word combinations, portmanteaus, alternate spellings, non-English names, and random names. The tool has received positive feedback from users who have found it helpful in generating domain names for their projects.