The most persuasive AI models in a research study were Opus 4.1 and Opus 4.6, followed by models ..., Sonic AI
“The most persuasive AI models in a research study were Opus 4.1 and Opus 4.6, followed by models from OpenAI (GPT-4o, GPT-5.4), Google (Gemini 2.5 Pro), and xAI (Grok 4.20).”