The cheapest AI stackthat still ships real money.

If you have spent any time looking at "AI business" content, you will have noticed two things: every guide assumes you'll happily spend £200/mo on tools, and the tools change every six weeks. Both of those things are wrong for a beginner.

Here is the stack we actually use — UK-grounded, calm, no affiliate stuffing, none of the "we recommend X" nonsense where X is whoever paid the most that quarter.

Tier 1 — the £0 stack (week one)

Everything you need to ship something real this weekend, for nothing.

1. The AI itself. ChatGPT free, Claude free, or Gemini free. Pick whichever you find easiest to talk to. They are all good enough for the prompts in any Atlas bible.
2. Email tool. ConvertKit free tier (up to 10,000 subscribers as of 2026, was 1,000) or Beehiiv free. Either will run a newsletter end-to-end without a card.
3. Payment / delivery. Gumroad. £0 to set up, takes ~6% of each sale. You don't need a Stripe account, a VAT number, or anything else. Gumroad handles the lot.
4. Landing page. Carrd free (one-page sites) or your email tool's landing-page feature. Don't build a "real" website until you have a real product.
5. Writing surface. Google Docs. That is it. Notion if you must.
6. Image generation. ChatGPT's free image generation, or Gemini's. Free, fine for thumbnails, covers, social images.
7. Domain. About £8/year at any registrar. We like Cloudflare and Porkbun. This is the one thing we suggest paying for in week one.

Total week-one cost: £8 (the domain). Some operators argue you don't even need that. They're not wrong, but a domain costs less than a takeaway and pays back in trust.

Tier 2 — the £15/mo stack (month two onwards)

You add these after you have proof — first sale, first 500 subscribers, first ~£100 in revenue. Not before.

1. An email tool you actually pay for. ConvertKit Creator (~£12/mo at 1,000 subscribers) or Beehiiv Launch (~£32/mo, justifiable if you're going hard on the newsletter model). The free tiers will get you to first revenue; you upgrade when automation and segmentation become a bottleneck.
2. Better AI. ChatGPT Plus or Claude Pro (~£18/mo). Faster, longer context, fewer "sorry the model is busy" walls. Worth it once you're running prompts daily.

That is it for tier 2. Total: ~£15–30/mo, depending on which email tool you've outgrown the free tier on. If you find yourself spending more than £40/mo before you've earned £200/mo, something is wrong.

Tier 3 — the "actually working" stack (£40–60/mo)

Once you're at ~£500/mo revenue and the business is real, three more tools earn their keep.

1. Canva Pro (~£10/mo). Branded templates, asset library, decent AI image fill. Saves an embarrassing amount of time on covers, lead magnets, social images.
2. A scheduling tool. Buffer, Hypefury, or Typefully (~£8–15/mo). Lets you batch a week of social posts on Sunday and forget about it.
3. One automation tool. Zapier free or Make free will get you most of the way; both have paid tiers (~£15/mo) once you have more than 5 zaps running. This is the moment to add it, not before.

That is the entire ladder. Three tiers. Maximum spend at "real business" stage: about £60/mo, all in. If a guide tells you to start with Surfer SEO, Jasper, and a £100/mo CRM — close the guide.

Things we deliberately don't recommend in the early stack

• Notion-as-business-tool. Notion is fine for notes. It is not your CRM, sales pipeline, content calendar and database all at once. Trying to make it those things eats weeks.
• Custom websites with builders. Webflow, Framer, Wix Pro — all gorgeous, all unnecessary. A one-page Carrd or a Gumroad listing converts perfectly well in month one.
• Stripe. You don't need it. Gumroad handles VAT, currency conversion and product delivery in one click. Save Stripe for the day Gumroad's 6% becomes the largest line item in your P&L.
• The £997 "AI growth platform". If you can name three of them, you've already been targeted by their ads. Don't.

The deeper rule

Tools are downstream of revenue, not upstream of it. Every tool you add before you have customers is paid procrastination dressed up as productivity. The five tools in tier 1 will get a complete first-time builder to first revenue. Everything after that earns its place by being a bottleneck remover, not a feature you wanted to play with.

Most of the income in any Atlas bible comes from the asset — the newsletter, the KDP book, the prompt pack, the listing — not the stack. Spend your first weekend building the asset on free tools. Spend your first £15/mo only when free tools have a clear ceiling.

What we actually use

For the record. We run Atlas itself on:

• Claude Pro and ChatGPT Plus (~£36/mo combined, the only "expensive" line)
• ConvertKit Creator (~£12/mo)
• Gumroad (transactional, ~6% per sale)
• Cloudflare Pages (free hosting)
• Canva Pro (~£10/mo)
• A £8/yr domain

About £58/mo of fixed cost, plus Gumroad's transactional fees. That is the entire stack of a UK-based AI publishing business that ships every week. Anything larger should be earning its keep before you add it.