Founding agencies

A month free. Your briefs, your team, your verdict.

The Team plan for up to five people, free for a month. In return: real client work, two short calls and an honest word on what doesn’t work. Working on your own? You get the Solo plan on the same terms.

1 month
free
up to 5
people in your team
2 calls
a start and a wrap-up
0 €
no card needed

How it works

One project. From the brief to a first take.

A real session in Underpaint. The client is fictional. The answers are not.

Real screens from Underpaint. A fictional brief for a fictional bank.

01You

The question the brief missed

Who chose the bank they use now?

Usually a parent, years ago. So this isn't a download problem. It's a switching problem, and a viral video won't solve it.

Underpaint found the gaps. You found the problem.

02Four roles

Your best work, more often. In every role.

Four roles. Each has its own methods and a first take you can bring to a meeting.

Strategy

Better questions before every debrief.

A new brief: thirty pages, three goals in one sentence and a debrief worth preparing well.

The real problem, the gaps, and the questions you still owe the client. The insight stays yours.

Break the client brief

See the methods

Creative

Start at your third idea, not your first.

A good brief deserves more than the first three ideas anyone would have.

Three routes in that brand's voice, so the team argues about ideas, not about the tone.

Campaign routes from a brief

See the methods

Design

Directions that respect the brand book.

A concept that still has to become a picture, without breaking the brand.

Three visual directions and a key-visual prompt, before anyone opens Figma.

Visual directions and KV prompt

See the methods

03Models

Every leading model. One subscription.

GPT, Claude, Gemini, Mistral and more, in one place for one price. No separate accounts, no juggling tabs. Let Auto choose, or pick the model yourself.

Auto

Auto picks for you.

It reads the task and sends it to the model that handles it best. You don’t have to know which one is better at what, or keep testing.

Your pick

Or choose yourself.

Any model from the catalogue, whenever you like. Compare answers, experiment, keep your favourites.

In the catalogue today

OpenAI

  • GPT-6 Astra
  • GPT-6.1 Sol
  • GPT-6 Luna
  • GPT Image 2.5 Sunburstimage
  • GPT-5 Image Miniimage

Anthropic

  • Claude Fable 5.1
  • Claude Opus 5.5
  • Claude Sonnet 5.5
  • Claude Haiku 4.5

Google

  • Gemini 3.1 Pro
  • Gemini 3.8 Flash
  • Nano Banana 2image

Mistral (EU)

  • Mistral Medium 3.5
  • Mistral Small 4

Perplexity

  • Sonar Pro Search
  • Sonar

DeepSeek

  • DeepSeek V4 Flash

Moonshot AI

  • Kimi K3
  • Kimi K2.7 Code

Black Forest Labs

  • Flux 3 Imageimage
  • Flux 2 Kleinimage

ByteDance

  • Seedream 4.5image

New models join the catalogue as they come out. The most powerful ones run when you ask for them.

04The programme

A fair trade: the tool for your honest opinion.

What you get

  • The Team plan for up to five people, free for a month.

  • Every leading model in one plan: GPT, Claude, Gemini, Mistral and more.

  • A direct line to the authors. What you ask for can end up in the product.

  • Help setting up your first clients, brands and files.

What we ask

  • Use it on real client work, not a demo.

  • Two calls, at the start and at the end, and a few short questions in between.

  • Tell us plainly what doesn’t work.

Who it’s for

  • Independent creative, marketing and PR agencies, and freelancers who work for several brands.

  • Teams that work for several brands at once.

  • Strategy, creative, account and design. Ideally all four at the table.

05One month

How the month goes.

  1. Day 1

    A start that fits your agency

    A 45-minute call. Together we set up your first two clients from your own briefs, brand books and files.

  2. Weeks 1–2

    Real briefs, every day

    The team works on live client work with the methods for their role. Now and then a short question from us, never a survey marathon.

  3. Tell us what gets in the way

    Write to us whenever something slows you down. What we can fix, we fix while you’re still testing.

  4. End of month

    Wrap-up and your decision

    A 30-minute call: what worked, what didn’t. Then move to a paid plan or stop. No card on file, so nothing renews by itself.

06What we promise

What you can hold us to.

  • An answer within a week

    Every application gets a reply, also when it isn’t a fit yet.

  • No training on your work

    We don’t train models on your content, and we route around providers that train on customer data wherever the model allows it.

  • Your name stays yours

    We never mention your agency or your clients in public without your written OK.

  • You can leave any time

    Stop whenever you like and take your work with you as an export.

  • We tell you what changed

    After the wrap-up you get a short note: what we heard and what we’re doing about it.

07The people behind it

25 years on the agency side.

Briefs, debriefs, pitches, a status the client actually reads. We built Underpaint for our own teams first. It does the groundwork and leaves the craft with you.

08Data

Files and the database stay in the EU. Before anything reaches a model, names you mark and the contact details we recognise become placeholders, and the answer comes back with the real names. Models run at the providers on our list, some outside the EU. One client's data never enters another's.

Privacy policy·Subprocessors

09Apply

Tell us about your agency.

Two minutes. We read every application and reply within a week. If it’s not a fit yet, we’ll say so.

No card · a reply within a week

We use these details only to handle your application. Privacy policy

10Questions

What happens after the month?
You decide: move to a paid plan or stop. There’s no card on file, so nothing renews by itself.
Is our client data safe?
Each client is kept apart in the database. Files and the database stay in the EU. Names you mark are masked before the model. Models run at the providers on our list, some outside the EU, and we say so.
Why is it free?
Because your feedback is worth more to us than a month of subscription. We’d rather build what agencies actually need.
Does it work in our language?
The interface is in English and Polish. Briefs, files and answers work in the languages the models handle well, which includes most European languages.
How much time does it take?
About as much as any tool you already work with, plus two calls of 45 and 30 minutes. No homework.
We’re more than five people. Can more of us join?
Start with up to five. If it works for you, we’ll talk about adding people during the programme.
I’m a freelancer. Can I apply?
Yes. You get the Solo plan for the same month, on the same terms.
Who will we talk to?
The people who built Underpaint: 25 years on the agency side, across strategy, creative and technology.