The extension works with OpenAI, Google Gemini and Anthropic Claude. You connect your own API key from the provider you choose, pick a model and run a connection test, so AI usage is billed through your provider account. Lighter models suit large catalogs, while stronger models suit brand-sensitive or SEO-critical content. Cost depends on the model, the number of products and attributes, and the maximum-token setting. Teams that route AI traffic through a proxy or gateway can set custom endpoints.