cashflowing
Cashflowing · Apr–Sep 2026

We studied the most cashflowing apps.

Now we’re sharing what we learned: who people pay, what’s growing, and what you could build next.

Free · 441 AI products · 9,542 websites

982M
visits to checkout pages, traced to their source
15 providers, Apr–Sep 2026
9,542
different websites sending people to pay
287 use more than one checkout
51%
of Stripe Checkout’s traffic comes from 262 AI products
+32%
growth in their monthly checkout visits, April → September
+14% without the one breakout
Inside 441 AI products

You don’t need to be famous to get paid.

163 AI products send more than 10K people a month to a checkout page. Only 20 passed a million visits in six months. The typical one sends about 6.5K buyers a month, a small, real business.

46%
of AI checkout traffic goes to the top 10
175
of the 441 use a .ai domain
AI products by monthly checkout visits · Sep 2026
  1. 500K+ a month5
  2. 100K+ a month29
  3. 10K+ a month163
  4. All AI products we found441

Checkout visits are people sent to pay, not purchases. Treat them as the size of the funnel.

Where to build

Seven AI niches, read like a map.

How many products already get paid in each niche, how fast its checkout traffic grew from April to September, and how much the biggest one takes.

Coding agents & app builders

Steady
Products
33
Apr→Sep
−1%
Leader
33%

Led by opencode.ai · 13M checkout visits in six months

Growth compares monthly checkout visits in April and September across all 15 checkouts. Niche labels are ours.

The AI money map

Seven AI niches, ranked by how many people they send to pay.

Visits to Stripe Checkout over six months from 262 AI products. The chip is each niche’s monthly growth, April to September.

  • Video & image generation+61%
    31.1M
    The biggest pot — and one runaway winner. higgsfield.ai · runwayml.com · kling.ai
  • Voice, music & audio+6%
    18.2M
    Huge, steady, already crowned. elevenlabs.io · suno.com · turboscribe.ai
  • Coding agents & app builders+20%
    12.5M
    Builders paying to build. opencode.ai · emergent.sh · kiro.dev
  • Model APIs & inference+61%
    11.5M
    Picks and shovels, fast risers. nousresearch.com · fal.ai · minimax.io
  • Other AI−2%
    9.2M
    Chatbots, agents and everything else. forgegui.com · starii.com · paxhistoria.co
  • Writing, detection & translation+12%
    5.7M
    A smaller pot, growing steadily. undetectable.ai · gptzero.me · immersivetranslate.com
  • 3D generation+150%
    3.9M
    Small base, fastest growth. tripo3d.ai · meshy.ai · customuse.com
The breakout

19.3K to 2.8M a month. In five months.

higgsfield.ai went from a rounding error to Stripe Checkout’s biggest single source of traffic between April and September. We can’t see why. What we can see is the shape: a creative-AI product turning attention into payments within weeks, not years.

Take it out and AI checkout traffic still grew +14% — so the market is moving, but one winner took a large share of the new money. That is the game.

higgsfield.ai · visits to Stripe Checkout / month
April
19.3K
September
2.8M
143× in five months
The other fast risers
  • nousresearch.com131K → 478K 3.7×
  • opencode.ai385K → 1M 2.6×
  • meshy.ai259K → 672K 2.6×
  • fal.ai387K → 607K 1.6×
If you’re about to build

Four things the checkout data says out loud.

0119 × 1M+

The pots are big.

19 AI products each sent more than a million people to Stripe’s checkout in six months. 309 sites passed 100K.

02APIs · 3D

The fast risers are the picks and shovels.

Model APIs grew +61% and 3D generation +150% in checkout traffic — from smaller bases than video.

03Hard mode

Crowned categories are flat.

Voice, music and audio sends 18M visits and grew +6%. The leaders are set; look for the angle they ignore.

0424% unranked

You don’t need a famous brand.

24% of Stripe Checkout’s traffic comes from sites with no global rank at all: new products, subdomains, apps nobody has indexed yet.

Observations from traffic data, not investment or business advice.

Picking where to get paid

Stripe is the default. The challengers are growing.

Stripe Checkout sends 43M visits a month, about 61× all five merchant-of-record challengers combined. But the challengers grew +33% in five months, and the newest are moving fastest.

Monthly visits (Sep) and growth since April
  • Stripe Checkout+12%
    43M
  • Stripe Payment Links+6%
    3M
  • Gumroad−6%
    2M
  • Dodo Payments+81%
    181K
  • Creem+39%
    77K
  • Polar+37%
    192K
  • Paddle+19%
    121K
  • Lemon Squeezy+1%
    139K

PayPal moves 124M a month but mostly from marketplaces like eBay and Etsy — a different market, covered in the case study.

Every company, one page each

Is your competitor on the list?

Search all 9,542 companies sending people to pay. Every row opens its own page: its rank, which checkouts its buyers use, and the companies in its niche.

Free dataset

Get the AI money map.

  • ✓The top 500 sites sending people to each of 15 checkouts
  • ✓All 9,542 sites ranked across every checkout, with who uses what
  • ✓Visits, share, category and Similarweb rank. CSV, ready for a spreadsheet

We’ll email you a download link. No spam, and you can unsubscribe anytime.

How it was made

Stand outside the bank. Watch where the depositors came from.

1

Pick the doors

Every buyer walks through a checkout page. We chose 15 of them, from Stripe and PayPal to the newest indie providers.

2

Read who sent them

Traffic data records the page each visitor came from. Flip it around and you get a ranked list of sellers, without ever seeing their books.

3

Clean and compare

We merged subdomains, removed search and social, and sorted what was left into AI niches by hand.