AI brainstorming partner
AI brainstorming tool that gets you from stuck to decided
Give it one challenge. Six personas answer from six different angles, around twenty ideas in all, then Brainstormer shortlists the strongest and picks one winner with the reasons written out. Runs in your browser, nothing to install.
No credit card needed. Your challenges stay private.
Built for founders, marketers and product teams who have to leave the room with a decision
Around twenty ideas from six angles, narrowed to a shortlist and one pick with reasons. Six personas · Shortlist · One pick
Challenge:
+ more on the wall
Winner
Why
Shortlist
A worked run, click anything. Your own challenges stay private.
One challenge in, a decided direction out
Six personas ~20 ideas Shortlist One pick, with reasons
No credit card needed to try it
The short answer
What is an AI brainstorming tool?
An AI brainstorming tool produces the ideas itself instead of handing you a blank canvas to fill. The useful ones do two things a whiteboard cannot: they make the ideas genuinely different rather than ten rewordings of your first thought, and they narrow the pile down to a decision.
Brainstormer does that by splitting the work between six standing personas. The Optimist, the Skeptic, the Customer, the Engineer, the Marketer and the Visionary each take your challenge on their own terms and come back with their own ideas, which lands around twenty on the wall with the persona behind each one attached. Then it converges: a shortlist of the strongest, and one winner with the reasoning written in plain sentences.
The difference from a chat assistant is the shape of the output. A chat gives you a conversation and agrees with whatever you suggest. Brainstormer gives you something you can defend in a meeting: six named angles including the skeptical one, a shortlist, a pick, and the reasons behind it. See how it compares with ChatGPT for brainstorming, or how it stacks up against the whole field in our best brainstorming software roundup.
Brainstormer runs online in the browser, so there is nothing to install and nothing to update. There is no separate Brainstormer app to download for Mac, Windows, iOS or Android: the studio is the page you land on after signing in, and because the wall lives in your account rather than on a device, you can start a session on a laptop and carry on from a phone. If you are comparing browser-based options generally, our brainstorming online page covers the three ways teams run a session on the web.
Is Brainstormer online, and is there a Brainstormer app?
Brainstormer online is the whole product. It runs in any modern browser at brainstormer.ai, and there is no separate Brainstormer app to download for Windows, Mac, iOS or Android. You sign in and the studio is the page in front of you, which is also why there is nothing to install, update or ask IT to approve.
On a phone or tablet, the same page works: it is responsive, so you can start a session on a laptop in the morning and keep adding to the same wall from a phone that afternoon, because the wall lives in your account rather than on a device. If you want it to feel like an app, add the site to your home screen and it opens full screen.
People also search for Brainstormer AI, which is the same thing rather than a separate product: the AI is what generates the ideas and picks the winner, and every plan includes it with no credit meter. What we are not is a shared whiteboard canvas. If you need a surface for architecture sketches or journey maps, that is a different category, and we compare the main options honestly in our best brainstorming software roundup.
| Fact | Detail |
|---|---|
| What it does | Turns one challenge into around twenty ideas from six personas, then shortlists them and picks a winner |
| How it works | Six standing personas: Optimist, Skeptic, Customer, Engineer, Marketer, Visionary |
| Time to a full wall | Under a minute for the ideas, the shortlist and the pick |
| How you run it | Online in any browser. No install and no separate desktop or mobile app |
| Who it is for | Founders, marketers, product teams and agencies |
| Pricing | Solo $10/mo, Pro $24.50/mo, Team $64.50/mo per account, Enterprise custom |
| AI limits | Unlimited brainstorms. No credits to ration |
| Free plan | None. A new account includes 3 trial brainstorms, one time, no credit card. The studio above runs with no signup at all |
A partner that diverges wide, then actually decides
Chat bots hand you a list. Whiteboards hand you a blank. Brainstormer runs the whole arc: six personas argue your challenge, then three ideas lift out with reasons.
Never start from a blank page
Around twenty directions from one challenge, each carrying the name of the persona that argued for it. Six different lenses on the problem, not ten rephrasings of the same idea.
Idea generatorSix angles, not one opinion
The Optimist, the Skeptic, the Customer, the Engineer, the Marketer and the Visionary each take your challenge on their own terms. The Skeptic naming a failure mode is as much a part of the output as the Optimist naming the upside.
Brainstorm with AIYou can aim it at your situation
Add optional context next to the challenge, the constraint or the audience or the thing you have already tried, and every persona works with it. The ideas come back shaped by your reality instead of a generic version of your problem.
Idea generatorEnd with a decision, not a pile of stickies
The strongest ideas are lifted into a shortlist, and one winner is picked with the reasons written out. From blank page to a decided direction in minutes.
Affinity mapping toolThree steps. One decided direction.
1 Drop in your challenge
Type the problem the way you would say it out loud: "grow newsletter signups", "name our agency", "reduce churn". No prompt engineering, no blank canvas. Brainstormer asks one or two sharpening questions if the challenge is vague, then gets to work.
Brainstorm with AI2 Six personas argue it out
Your challenge goes to six standing personas at once: the Optimist, the Skeptic, the Customer, the Engineer, the Marketer and the Visionary. Each returns its own ideas from its own angle, so the wall fills with around twenty directions that genuinely disagree instead of one voice rephrased twenty times.
Brainstorm with AI3 Converge: shortlist, then one pick
The run does not stop at ideas. It pulls the strongest few into a shortlist, each with a line on why it made the cut, then names one winner and writes out the reasoning in plain sentences. You walk away with a decided direction, not a pile of stickies to sort later.
Idea prioritizationIf it starts with "we need ideas", it fits
Real challenges people ran this month. Every one ended in a shortlist and a pick.
Marketing
Grow newsletter signups
Creative
Name the new agency
Founder
Reduce churn in month two
Product
Next feature for the fitness app
Strategy
Reposition against the giant
Marketing
Q4 campaign for a boring category
Content
Turn the webinar into 20 assets
Product
Make onboarding feel like a win
Where do you sit?
A whiteboard holds ideas. A chat lists them. This decides.
| The job | Miro / Mural | ChatGPT | Brainstormer |
|---|---|---|---|
| Generates the ideas | You and the room do | Yes, but look-alikes | Around twenty, from six angles |
| Argues against itself | Only if the room does | Tends to agree with you | A Skeptic on every run |
| Uses your context | Holds what you write | Restate each time | Saved with the session |
| Ends in a decision | Manual sorting | No converge step | Shortlist + a pick with reasons |
| Price for one brainstormer | Per-seat suite + AI credits | $20/mo generalist | From $10/mo billed yearly, all in |
Full comparisons: Miro alternative, Mural alternative, the 10 best brainstorming tools.
You might be thinking...
"Isn't this just ChatGPT?"
ChatGPT gives you one thread of similar ideas; this splits the work across six personas who disagree, then converges to a pick.
"The ideas will be generic."
Six personas with different jobs pull the run apart, and the Skeptic is there to say what will not work. You stay the judge.
"My challenge is confidential."
Private by default, never used to train models, deletable on request. Agencies run client work here.
What does "we need ideas" cost you now?
A brainstorm workshop is people times time times salary, before the follow-up meeting where the actual decision happens. Put your numbers in.
Teams standardize on Brainstormer so every brainstorm is captured and decided in one place instead of dying in chat threads. Enterprise adds custom onboarding and invoicing, priority support, a security review and a DPA; see pricing or talk to sales.
◇ Workshop cost calculator
Per workshop
90 min + follow-up share, loaded cost
Per year
in payroll hours alone
Brainstormer Pro
$294/yr
cheaper than the workshops it replaces
Every session ends like this
Around twenty ideas, each tagged with the persona that produced it, then the three strongest lifted out with the reasoning written in plain sentences. This is the artifact you walk into Monday with.
Built for the people who have to decide
Founders without a room
You need a sounding board at 11pm and there is nobody awake to be one. Put the decision in, get six different angles back including the skeptical one, and end on a pick you can defend to an investor.
Brainstorming for foundersMarketers on a quota
Campaign angles and content ideas on a weekly clock. Run the challenge, read what six different lenses each want to do with it, and leave with a shortlist and one angle chosen and reasoned.
Brainstorming for marketersProduct teams that must decide
Feature ideation that usually costs a 90-minute workshop plus a follow-up meeting. Run it in a couple of minutes, bring the shortlist and the pick into the room, and start the meeting at the decision instead of the blank page.
Brainstorming for product teamsOne skipped workshop pays for a year
Yearly is the default and costs half, a year is priced as six months. Monthly billing is one click away on the pricing page. Every plan runs all six standing personas and ends in a shortlist.
Solo
One brain that needs sparring
$10 /mo billed yearly, or $20 monthly
- Unlimited brainstorms, no monthly cap
- Six personas argue every challenge from their own angle
- Shortlist and a picked winner with the reasons written out
Pro
Serious operators: founders, marketers, PMs
$24.50 /mo billed yearly, or $49 monthly
- Everything in Solo
- Same feature set as Solo today: Pro buys the support line, not extra functions
- Every past session kept in your account and readable anytime
Team
Teams standardizing how they get unstuck
$64.50 /mo billed yearly, or $129 monthly
- Everything in Pro
- One login per account
- Invoicing on request instead of card only
Rolling it out to a whole org? Enterprise adds custom onboarding and invoicing, a security review and a DPA, and priority support. Talk to sales.
Fair questions
The honest boundary up front: the AI suggests, structures and challenges. You judge and decide.
Is this not just ChatGPT with extra steps?
No. A chat thread gives you one linear list of ideas that tend to sound alike, and they die in the scrollback. Brainstormer runs your challenge past six standing personas at once, so the Skeptic and the Engineer answer alongside the Optimist, then it converges: a shortlist of the strongest ideas and one pick with the reasoning written out. Different job: not "give me ideas" but "get me from stuck to decided".
Will the ideas be generic?
Some ideas in any brainstorm are obvious, and that is fine: the obvious ones prove the wall is honest. Six personas with genuinely different jobs pull the run apart, because what the Customer wants and what the Engineer is willing to build are rarely the same idea. You stay the judge: Brainstormer widens your thinking and speeds up your decision, it does not pretend to know your business better than you do.
Is my challenge confidential?
Yes. Your challenges and ideas are private by default, are never used to train models, and you can delete them at any time. Agencies and product teams use Brainstormer for client and roadmap work for exactly this reason.
How is this different from Miro or Mural?
Miro and Mural are excellent whiteboards, but they are canvases: you bring the method, the facilitation and the energy, and the AI assist is bolted onto a blank board. Brainstormer is the partner, not the canvas. It generates the ideas from six angles and converges to a shortlist and a pick. It is also narrower on purpose: no diagramming, no general whiteboarding. See the honest comparison on our Miro alternative page.
How much does it cost?
Solo is $10 per month billed yearly, most people pick Pro at $24.50 per month billed yearly, and Team is $64.50. Paying month to month costs twice that: $20, $49 and $129. Enterprise is invoiced and arranged with sales. There is no free plan: a new account includes 3 trial brainstorms, one time, with no credit card, and any paid plan removes that cap. The sample brainstorm on this page is the test drive with no signup at all.
Can my whole team use it?
Teammates can each hold an account and run uncapped brainstorms on a paid plan, and the shortlist and pick from any run are easy to paste into wherever your team already decides things. To be straight with you: there are no shared workspaces, no shared idea library and no in-app voting today. Every account is its own. If shared workspaces are what you are buying, wait for us to ship them rather than paying for them now.
Do I need to know any brainstorming technique first?
No. You type the challenge the way you would say it out loud and the six personas do the rest. There is no method to pick, no template to fill in and no facilitation to run. If you want to read up on the classic techniques anyway, the blog covers them, but nothing on it is homework you need before your first session.
Your next good idea is one challenge away
Type the problem the way you would say it out loud. Walk out with clusters, a shortlist and a pick with reasons.
No credit card needed. Your challenges stay private.