A second brain for your whole team
Give your AI the knowledge your team already has. Keep the decisions, the know-how, and the why behind your work in one shared Second Brain.
Find your planSimple by design
Your knowledge grows with your team. Your bill shouldn’t grow with every person.
A small start. A smarter next conversation.
$0/ month
For your whole team
You own your knowledge.
Download your Markdown files anytime.
Available by invitation
For teams with more to remember.
Room to grow.
Pricing to be announced
You own your knowledge.
Download your Markdown files anytime.
Coming later
A look at what’s next
Because knowledge needs a little tending.
A step ahead.
Pricing to be announced
You own your knowledge.
Download your Markdown files anytime.
Coming later
A look at what’s next
One plan to start. More room, and a little more foresight, on the way.
Yours, on every plan
Your team’s thinking belongs to your team. Download your knowledge any time as Markdown files: simple text that humans and AI can both read.
Keep a copy. Use it in other tools. Take it with you if you move on. What you’ve learned stays yours, wherever you go next.
Illustrative ChatGPT Work demo · Fictional product and prices
Fictional example in September 2026. Two knowledge lookups, followed by a saved change. This illustration does not send messages or change real knowledge.
Alex: What do we charge for Luma each month?
Second Brain: Read pricing.md.
ChatGPT: Luma is $39 per month. That’s the price for the whole team.
Alex: And what’s the annual price?
Second Brain: Read annual pricing.
ChatGPT: The annual plan is $390 per year, also for the whole team.
Alex: Make it $49/month from October 1. Keep the annual price the same.
Second Brain: Updated pricing.md.
ChatGPT: Knowledge updated. Luma will be $49/month from October 1, 2026. The annual plan stays at $390/year.
The saved Markdown file keeps the current $39 monthly price and records the $49 price starting October 1, 2026. Annual pricing remains $390.
From “let me explain” to “you already know”
You’ve already done the thinking. Make it useful beyond the conversation where it happened.
The decision you just made. The reason behind it. The detail someone always has to explain. Capture it through conversation with your connected AI.
Keep useful knowledge together, organized by subject and owned by your organization. Your team has a place to find what’s been learned.
Bring that context into the next AI conversation. Build on what your team already knows, without telling the whole story again.
A few useful details
We’re setting everything up, and access is currently by invitation. Reach out to @secondbrainco on X if you’d like to try it.
A useful piece of context you want to keep: a decision, a process, a preference, or a fact about your work. Think “why we chose this approach” or “how we handle customer handovers.”
No. There are no per-user fees on any plan. Free’s weekly entry allowance is shared by your team, and paid plans will cover the whole organization.
Every plan includes read-only Git access, a standard way to download your files and their history. Your knowledge is saved as Markdown: simple text files that people and AI can read. Keep a copy, open it in other tools, or take it with you if you leave. Editing your downloaded copy won’t change what’s saved in Second Brain.
Not yet. We’re starting with Free. Pro and Intelligence are coming later; their details are here so you can see where Second Brain is going. Pricing for both will be announced closer to launch.
Knowledge changes as your team does. Intelligence is planned to automatically detect conflicting information and regularly scan for inconsistencies, helping you spot the things that need another look.
A little knowledge goes a long way
Free is where we’re starting, with 20 new knowledge entries per week for your team. Access is currently by invitation. If you’ve been invited, follow your invitation link to create or join a Brain.
See how Second Brain works