T3 Chat is a high-speed, multi-model AI chat platform that lets users interact with leading models including GPT-4o, Claude, Gemini, and DeepSeek from a single unified interface. It supports seamless switching between models mid-conversation without losing context. Key features include branching conversations, real-time web search integration, local-first data storage for privacy, markdown and code formatting, and keyboard shortcuts. A free tier provides basic access, while the Pro plan offers nearly unlimited model usage for $8 per month.