Fast Mode
Fast Mode is Theo’s default conversational engine — instant replies, low credit cost, and the right pick for quick questions, drafts, and lightweight artifact creation.
In depth
Fast Mode keeps the conversation moving with minimal latency. It’s tuned for everyday writing, brainstorming, summarization, and one-off artifact creation. When a request needs deeper reasoning, Theo escalates to Think or Research automatically.
Examples
- “Draft a follow-up email”
- “Make a 5-bullet outline”
Also known as
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Think Mode
Think Mode runs Theo’s deep reasoning engine — slower but with better answers for hard problems, multi-step plans, and code or analysis tasks where correctness matters.
Explore Mode
Explore Mode pairs conversational Theo with proactive web search and inline citations — perfect for “tell me about X” questions, fact-finding, and quick discovery.
Theo AI
Theo AI is the OpenCharts assistant — a multi-mode, multi-modal agent that creates flowcharts, whiteboards, notes, presentations, code, podcasts, movies, and more from a single chat.