Turn messy AI chats into organized Thoughts.
ThoughtStack is an agent-driven workspace that organizes as you work—so you end with reusable Thought cards, not a chat transcript.
A community built and supported product with low pass-through token costs. Talk to us on Reddit.
How it works
Chat like normal — with a template.
Start from a workflow (like Founder Competitor Analysis) so you’re never on a blank page.
The agent organizes.
It creates and updates Thought cards automatically—structure + what matters.
Keep the workspace.
Thoughts stay saved as a project you can reuse, edit, and export.
The agent keeps your thinking on track.
Thoughts
- Organized Thought cards that are easy to browse, expand, search, and reuse.
- Rich Markdown that matches how agents already write and think.
- Supports headings, checkboxes, code blocks, and images.
Agents for real work—not blank-page prompts.
Start with a focused agent. You'll end with an organized Thought workspace you can reuse.
A Community built and supported project.
- A bootstrap project, built in public.
- You pay pass-through LLM usage fees (usually pennies) plus a ~20% platform fee to cover hosting and ongoing development.
- We ship fast and listen closely — join us on Reddit to influence the roadmap.
Try the demo now.
Demo runs in guest mode with a small trial budget. Sign up to add credits and save your work.
We pass through LLM costs and add a small platform fee to support hosting and development. See full pricing →
Frequently asked questions
Everything you need to know about ThoughtStack
ThoughtStack is an AI-powered thinking workspace. It combines the power of large language models with a beautiful, distraction-free interface designed for brainstorming, analysis, code generation, and creative writing.
ThoughtStack is built specifically for deep work and creative problem-solving. It features a split-screen workspace, artifact generation, persistent context across sessions, and specialized tools for coding, document analysis, and structured thinking that go far beyond a simple chat interface.
ThoughtStack is pay-as-you-use — you only pay for the AI calls you make. There are no monthly subscriptions or hidden fees. Start with a free demo, then add credits when you're ready.
Yes! Click the 'Try Demo' button to start a guest session instantly. No email or credit card required. When you are ready to save your work, you can create a full account.
ThoughtStack supports multiple leading AI models including GPT-4o, Claude, and others. You can switch between models mid-conversation to get the best results for your specific task.
Absolutely. Your conversations and documents are private by default. We do not use your data to train AI models, and you can delete your data at any time.
Team features are on our roadmap. Right now, ThoughtStack is designed for individual use, but you can share specific conversations and artifacts with collaborators via links.
Ready to think differently?
Join thousands of thinkers, builders, and creators using ThoughtStack to do their best work.