Cortex is one brain you capture everything into — then chat with it from Claude, ChatGPT, or Cursor via MCP. Capture once; never reload context into a fresh chat again.
That is the whole product. Four simple parts — a brain you capture into, chat from any AI, projects to scope it, teams to share it.
Write a note, drop a file, save a chat, capture what you see — it all lands in one place, searchable by meaning. Stop scattering what you know across ten apps.
Cortex plugs into Claude, ChatGPT, and Cursor over MCP. Ask a question in whichever AI you already use and it answers from your brain, with citations back to the source. Switch models any time; your memory stays put.
Set the active project and every AI knows which client or initiative you are in. No more pasting a 600-word brief into a fresh chat — the right context loads itself, and switching projects switches it everywhere at once.
Invite your team and everyone works from the same memory. Decisions, docs, and context live in one place new hires can search instead of asking — and every member’s AI reads from the same brain.
Your second brain holds your most sensitive work. It stays encrypted, it never trains a model, and you can pull all of it back out — or wipe it — in one click.
Read the security postureThe context you keep losing between clients, projects, and AI chats is the part Cortex holds onto.
Every plan is one brain, connected to every AI you use. Start free without a card, or trial any paid plan for 7 days — cancel anytime.
Prices include VAT where applicable · cancel any time — you keep your plan until the period ends, no refunds for partial months · your data is exportable on every tier · Terms
Give every AI you use one external brain. Capture once, connect your tools over MCP, and every conversation starts warm.
Free forever plan · Pro €19/mo · Team €49/mo with 5 members included · cancel any time.