Claude Duet, Gemini 4 or GPT-6.1 Terra: Which New AI Is Worth Your Time?
Home Blog AI Claude Duet vs Gemini 4 vs GPT-6.1 Terra ✦ AI news · 29 October 2026 Claude Duet, Gemini 4 or GPT-6.1 Terra: which new AI is actually worth your time? Three AI launches landed in seven days, and one of them does your work before you ask. Here is what each one does, who can use it today, and how to build your own Duet-style agent. By Zubair Hussain · Updated 29 Oct 2026 · 8 min read Claude Claude OpenAI OpenAI Gemini Gemini On this page Watch the main points Main points What is Claude Duet? Explained GPT-6.1 Terra Gemini 4 Argon and Carbon Quick comparison FAQ AI terms glossary Why are companies updating their policies? Short answer: Three companies shipped big releases inside one week. Anthropic opened a research preview of Claude Duet on 21 October,...