No memory of this client
Tone of voice, forbidden claims, the thing the client hated in the last round. Gone the moment you open a new window.
Built for agency work
AI does theunderpainting.You makethe art.
Underpaint knows your client, the brand and the brief. Every brief starts from solid groundwork, and every client stays in its own place.
Four guided messages. No card.
Clients never mix. Files stay in the EU. Every leading model, one subscription.
01The problem
The brief is in six places. The brand is in none of them.
You paste the same PDF into a chat for the fifth time. It does not know the client. It forgets last week's call. It sounds like every other agency using the same model.
Every brief starts from zero
Strategy, creative, account and design rebuild the same facts before anyone gets to think.
Ten tabs, zero craft
A blank chat does not know how an agency works. You get average sentences, not a method.
02How it works
One project. From the brief to a first take.
A real session in Underpaint. The client is fictional. The answers are not.
03You
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.
For you and for your team
On your own
Working on your own, or want to start with yourself?
Freelancer or one of the people in an agency: every brief like your best one, and every client in its own place.
Underpaint for you →For your agency
Running an agency?
Try it with your team for a month, free. Up to five people, real client work, two short calls with the authors.
Apply for Founding agencies →04Four 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 methodsCreative
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 methodsAccount
Walk into every call prepared.
The client’s email says what they want. The team needs to know what they need.
Notes become a brief, a status, and the questions you still need to ask.
Brief intake notes
See the methodsDesign
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 methods05The difference
ChatGPT knows everything. Underpaint knows your client.
Every client in its own place
Many brands at once, each with its own project, files and memory. Nothing to re-explain, and one client’s brief never enters another’s chat.
Methods, not lucky prompts
Ways of working from 25 years of agency craft, for four roles. You run a method. You don’t hope a sentence works.
One subscription, every model
GPT, Claude, Gemini, Mistral and more. Auto picks the right one for each task, or you choose. Each client’s data stays apart.
06Models
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
- 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.
07Pricing
Start free. Pay when the first layer is useful.
Every paid plan includes every model in the catalogue. Auto picks the right one for each task, or you choose yourself.
Free
€0 no card
- 4 guided messages on a fast model
- Your client, brief and first chat stay
- A method for your role, on a real brief
Solo
One person: a freelancer, or you inside an agency
€29 / month
- One seat, all models
- Monthly AI budget, top up anytime
- Brand and project memory
Team
2-9 people
€25 / seat / month
- Invite the team, one invoice
- See spend per person
- Shared clients and projects
Agency
10+ people
€22 / seat / month
- Pooled budget with a per-person ceiling
- Auto-join for the company domain
- Export cost per client
VAT is added at checkout. Yearly, 15% less
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.
09The 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.
10FAQ
Questions before you start
- ChatGPT and Claude have projects. Why switch?
- For client work, yes. A ChatGPT or Claude project remembers one space. Underpaint is built for many clients at once: each with its own brand memory and files, kept apart in the database, with methods for four agency roles and the cost per client. The same models are inside. One subscription instead of several.
- Can I use it at my agency without my boss’s approval?
- Check your agency’s AI policy first. Start with your own project, a public brief or a past pitch. Names you mark are masked before anything reaches a model, and files stay in the EU. When it works for you, invite your team or show it to your agency.
- Who owns the output?
- You do, as far as the law allows. You still check claims, trademarks and facts before anything runs.
- Do you train models on my work?
- Underpaint does not. Models sit behind OpenRouter. We turn off providers that train on customer inputs when the account allows it.
- What happens when the AI budget runs out?
- Paid models step down to a faster one, or stop if you picked the model yourself. Fast replies keep working inside the daily cap. You can top up.
- Can I cancel anytime?
- Yes. Access stays until the end of the period you paid. Read and export stay for 30 days after that.
- Is client data separated?
- Yes. One client's files, chats and brand never enter another client's context. The database enforces it, not just the interface.
- Which models?
- GPT from OpenAI, Claude from Anthropic, Gemini from Google, Mistral from Europe, plus Perplexity for web search and image models such as Nano Banana, GPT Image and Flux. The full list is in the Models section, built from the live catalogue.
- Is there one invoice for a team?
- Team and Agency are billed per seat on one subscription. Agency can export cost per client if you recharge.
- Is this legal advice?
- No. We do not review ads for compliance. That is still your lawyer and your client.
Start with your next brief.
Four messages on us. Bring a real client, not a demo.
Running an independent agency? Apply for Founding agencies →Newsletter
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