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For people who sell, and for people who run the sellers

Your team already has AI. It still doesn't know what to say.

It answers in generic advice and it sounds like AI. This puts real sales trainers' method inside it: the technique, its name, and the source it came from, so you can check it.

See the price How it works

hundreds of hours of content reviewed. 323 techniques, 230 with a link to the original.

Here about the co-founding side? That's over here

Sales Brain

They told me a competitor is cheaper.

Don't justify yourself: turn the objection into a question.

The moment you justify, you lose control of the conversation. Turning it into a question puts the weight of the argument back on the client.

Don't defend your price: ask why they think that difference exists.

Watch the source it came from

Write me the question with my context.

Everyone tells you selling is something you learn by doing.

Nobody tells you what to do on the Tuesday a client goes quiet.

Who this happens to

Selling well doesn't copy across.

That's why the problem looks the same whatever your size: the method lives in one person's head, and nobody else can reach it there.

You do the selling

“I'm good at my actual job. Selling is something else, and I don't know if I'm doing it right.”

Business owner, freelancer, founder who just started.

Your team sells

“I know how to sell. My team doesn't sell like I do, and coaching them one by one doesn't scale.”

Sales lead, director, owner with people reporting in.

And it doesn't fix itself when nobody has the time.

  1. 01

    The knowledge already exists

    The best sales trainers have spent years explaining it, and it's published. Access was never the problem.

    It's hundreds of hours. You don't have them.

  2. 02

    And the knowledge inside doesn't move either

    Your best salesperson knows exactly what to say. That doesn't reach the rest of the team by shadowing them for an afternoon, and when they leave, it leaves with them.

    The method lives in one head.

  3. 03

    And the AI you already pay for doesn't fix it

    It answers in generalities, with no technique behind it. You feed it context, you fix the tone, you rewrite the email…

    You'd have been quicker writing it yourself.

The shift

How to make AI actually help you sell.

Remember The Matrix, when they plug in the cable and he suddenly knows kung fu? Same thing, but for selling. And it takes two minutes.

Claude and ChatGPT can write. What they don't have is commercial judgement: they have never sat across from a client, so they hand you good intentions instead of what to say.

You plug the Brain in and it stops giving opinions: it applies a method, names the technique and shows where it came from. For you and for everyone on your team, inside the tool they already open every day.

Your AIClaudeChatGPTGemini

What changes on Tuesday

What to say to a client when this happens.

  • “They've gone quiet on me for two weeks.”

    Whether to push or let go, and the line that reopens it without sounding pushy.

  • “They told me a competitor is cheaper.”

    The technique for not defending your price, which is exactly what loses the deal.

  • “They say they need to run it past their partner.”

    How to tell whether the partner is real or a polite way of saying no.

  • “I have to write a cold email and I don't know where to start.”

    The opening paragraph, with your context, without the template they've seen a thousand times.

  • “I have the call tomorrow and I'm going in blind.”

    What to ask so the client is the one who states the problem, not you.

  • “My team doesn't sell the way I do.”

    The same method for everyone, in the tool they already use every day.

Before selling it to anyone, we used it on our own companies.

  • Enjoy the Club
  • Trama
  • Lumbra
  • Oquea

Four companies of ours, four different sectors. The Brain exists because we needed it ourselves.

What happened to them

Three cases from our own house.

  • The sales script wasn't converting

    “We had a script written with ChatGPT and it converted terribly. We gave the Brain what we already had and what we were trying to achieve, and rebuilt the whole script. The new one started converting a lot better.”
    Cristian · Enjoy the Club

  • A funding round

    “We even used it to negotiate with investors: moving the anchors, changing the strategy and above all how to communicate it. It isn't only for selling a product.”
    Enrique · Founder of Oquea

  • Busy people who don't reply

    “Casting directors and agents who weren't replying and we didn't know how to write to them again. It gave us ways to reopen that hadn't occurred to us, and routes to reach them that weren't the usual ones.”
    Toni · Founder of Trama
  1. 01

    You plug it in where you already work

    You add it as a connector in Claude and that's it. ChatGPT has its own address and a couple of extra steps we walk you through. You install nothing.

    Add connector

    https://cerebro.cofundo.io/mcp

    Claude · 1 min

    https://cerebro.cofundo.io/mcp/chatgpt

    ChatGPT · its own address

  2. 02

    You tell it the situation, not the theory

    “They've gone quiet for two weeks.” “They said they need to think about it.” You don't need to know which technique to ask for: that's exactly the case it's built for.

    They told me a competitor is cheaper.

    Your situation, in your words. You don't need to know which technique to ask for.

  3. 03

    It gives you the method, not advice

    The technique it applies, why it works and the concrete steps. Applied to what you just told it, not in the abstract.

    Don't justify yourself: turn the objection into a question.

    The moment you justify, you lose control of the conversation. Turning it into a question puts the weight of the argument back on the client.

  4. 04

    And where it came from, every time

    Most come with a link to the content they were distilled from. That's the difference between a reference and a chatbot with a good prompt: you can go and check it yourself.

    Don't defend your price: ask why they think that difference exists.

    Watch the source it came from

    Without that line, this would be a chatbot with a good prompt.

  5. 05

    And it writes it for you

    With your context, your client and your words. From the technique to the message you're about to send, in the same conversation.

    Write me the question with my context.

    “I understand there's a price difference. Why do you think that difference exists between the two?”

Price

One price. That's it.

No tiers, no sales call, no lock-in. If it works for you, you stay; if not, you leave.

Individual

You do the selling.

10 €/mes

VAT included

  • The whole sales Brain
  • Inside your Claude, your ChatGPT or your Gemini
  • With a link to the source where there is one
  • No lock-in

Equipo

A team does the selling.

From 36 €/mes

+ VAT · €12 per seat, 3 minimum

  • The sales Brain for the whole team
  • Admins don't take up a seat
  • Hand a seat over by changing the email
  • No lock-in

If you're buying it for a team

  • Nobody needs trainingIt plugs into the Claude or the ChatGPT your team already opens every day. It isn't a new tool to learn: it's the same one, answering better.
  • Not one more loginNo new tab, no dashboard to check, nothing to migrate. You authorise an email address and they're in.
  • And if it doesn't stick, you stopNo lock-in. A seat moves to someone else by changing the email, and admins don't take up a seat.

Enterprise

What if the Brain were your own company's?

What your best salesperson knows, your own pitch, your real objections — available to the whole team in the tool they already use. It's a conversation, not a plan: tell us what you have.

Let's talk

This doesn't teach you to sell. It tells you what to say.

And those are different things. Selling well is also tone, silences, body language and hours of practice with someone correcting you. That you learn from a person, not from a tool.

What this takes off your plate is the part that can be solved today: knowing which technique applies, having the argument to hand, and not walking in to improvise.

If you use it and find that knowing what to say still isn't closing deals, that is exactly the sign that what you're missing is the other half. And that's what the trainers all of this comes from are for.

Questions

What people ask us before making up their mind.

Why does ChatGPT give me such generic sales advice?
Because a general-purpose model has no commercial judgement: it can write, but it doesn't know which technique applies to what just happened to you, and it has never sat across from a client. So it hands you good intentions —“be empathetic”, “add value”— instead of what to say. The Brain puts real method inside it: specific techniques, from specific trainers, with the source they came from.
How do I get AI to actually help me sell?
By giving it method, not more context. Most people try to fix it by writing longer prompts and end up slower than writing the email by hand. What changes the result is the AI having a body of sales techniques inside and knowing which one applies. That's what plugs in here, into the Claude or ChatGPT you already use.
How do I improve my team's sales without running a training programme?
Training is the right answer in the medium term and it isn't always viable: it costs money, it costs calendar time and the effect takes a while. What you can do tomorrow is give the whole team the same method inside the tool they already open every day, for the specific email they're writing right now. It doesn't replace training them; it stops each of them improvising separately in the meantime.
What do I say to a client who has gone quiet for two weeks?
First, don't read it as a no: it's almost always a calendar. The technique that works best is framing the silence as expected and proposing the next date yourself, instead of leaving it to chance or asking again whether they saw it. The Brain gives it to you applied to your case, with the content it came from so you can check it.
How do I answer when they tell me a competitor is cheaper?
By not defending your price. The moment you justify it, you lose control of the conversation and the comparison becomes the subject. What works better is turning it into a question: why do they think that difference exists. It's one of the 323 techniques in the Brain, and there are seven families of objection covered like that one.
Does this replace a sales course?
No, and that isn't the point. A course teaches you to sell: tone, body language, practice with someone correcting you. This gives you what to say, today, in the situation in front of you, without booking anyone's calendar. If you use it and find that knowing what to say still isn't closing deals, that's exactly the sign that what you're missing is the other half — and there the trainer's course is the answer.
Does this work the same in ChatGPT as in Claude?
Almost. In Claude you add it as a connector and that's it. ChatGPT has its own address and a couple of extra steps we walk you through. Worth knowing: Deep Research won't see the Brain even if you enable it, because it only uses two specific tools. In normal chat it works.
Do I need a paid Claude or ChatGPT plan?
In ChatGPT, no: we connected it on a free account. You just have to turn on developer mode, which is free and explained step by step. In Claude you do need a paid plan to add connectors. Either way, that plan you pay to them, not to us.
And in Gemini?
In the Gemini CLI it connects with nothing to configure: it discovers the connection on its own. In the Gemini app — phone and web — it doesn't: Google only allows servers like ours inside Spark, its agent layer, and not in normal chat. That's a limit of theirs, not of the Brain, and the day they open it up it will work without us touching anything.
How much does it cost?
One Brain is €10/month with VAT included, or €100 a year — you pay for ten months and get twelve. For teams it's €12 per seat per month plus VAT, and the plan starts at three seats: €36/month. Prices are in euros because we invoice from Spain.
What if it isn't useful to me?
On the individual plan we refund the full amount if you ask within the first 7 days, with no explanation needed. On the team plan there's an invoice and VAT involved, so that one is case by case: write to us and we'll look at it. There's no lock-in on either.
Do you give me the trainer's exact words?
It depends on the Brain. In reference mode you get the technique, the why, the steps and the link, but not the creator's literal script. That is only served where a signed agreement allows it. We'd rather say so here than have you find out after paying.
What about my conversations?
Your conversation stays in your Claude or your ChatGPT: we don't see it. What does reach us is the specific query your assistant sends to the Brain, and that one we do keep for 30 days — to see what people ask that the Brain can't answer yet — and it deletes itself. That query also passes through OpenAI, which turns it into the vector used to search. Said plainly so you can decide what you write: if you put a client's name in the query, that name travels and is kept for those 30 days.

Here for something else?

We also build entire startups.

We're 6 people and growing, specialised in early-stage product and in automating the processes that eat your day. The Brain came out of that.

See what we've built
  • Enjoy the ClubEnjoy the Club
  • TramaTrama
  • LumbraLumbra
  • OqueaOquea

The next objection, answered.

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