SiteSpeakAI supports GPT-4o, GPT-4o mini, GPT-4.1, GPT-4.1 mini, GPT-4.1 nano, GPT-5, GPT-5.1, GPT-5.2, GPT-5.4 and GPT-5.5 from OpenAI, Claude Sonnet 4.5, Claude Sonnet 4.6, Claude Opus 4.6 and Claude Opus 4.7 from Anthropic, Gemini 1.5 Pro and Gemini 2.0 Flash from Google and xAI Grok 3 and xAI Grok 4 from xAI. Depending on your subscription plan, you can choose which model to use for your chatbot.