Which AI systems does AITWIRE monitor?

“AITWIRE probes 8 AI systems directly with controlled questions — ChatGPT (OpenAI), ChatGPT Search, Claude (Anthropic), Gemini (Google), Perplexity, Grok (xAI), Mistral, and Llama (Meta). Google AI Overviews is not measured: AITWIRE captured the overview off the live results page until that capture was retired on 25 September 2026.”