← All postsCLAY · 4 MIN READ · OCT 2026

What a 20-minute Clay build teaches (Clay Cup 2026)

Clay Cup rounds gave competitors 20 minutes to read a GTM problem, build in Clay and prove it works. Here is what I take from that format, and how to practise it.

The Clay Cup format asked for three things in 20 minutes: understand a GTM problem, build the solution in Clay, and prove it works. That is a narrower test than a real campaign, but a good one. Here is what I take from it, and how I would practise it.

I watched from Islamabad, so everything below comes from the public format and the finalists' own posts. I do not know what the winner built, and I will not pretend to. My winners post has the field: 128 competitors, 14 time zones, six knockout rounds, and a final at Sculpt on 8 October 2026 won by Ben Broadley, with Leszek Lammel and Avik Ghimire alongside him.

What does a 20-minute limit actually test?

Whether you can decide what matters before you touch a column. With no time to look things up, the first three minutes shape the other seventeen. I read it as a test of problem framing more than Clay knowledge.

Notice the third verb in the format: prove it works. A table with columns is not proof. A sample of rows showing the output you promised is.

What would I do in the first five minutes?

A fixed order. This is a method, not a record of something I won.

  1. Write the output in one line. "A list of N companies with a verified contact and a reason to email." If you cannot write it, you are not ready to build.
  2. Name the cheapest signal. The one field that separates good rows from bad. Often it is a filter, not an AI column.
  3. Decide what you will skip. Say what you will not build. Time-boxed work fails from adding, not from missing.
  4. Pick three test rows. Run every step on them before you widen.

That fourth step is the same habit that protects credits in real work, as I described in how to stop burning Clay credits.

What breaks under time pressure?

Mostly the same things that break real builds, only faster.

FailureWhy it happensGuard
Expensive step firstBuilding in the order you thought of itCheap filters before waterfalls, see waterfall enrichment explained
No proofRunning out of time before checking outputReserve the last four minutes for checking rows
Over-buildingAdding columns "just in case"Stop when the one-line output is met
Unreadable tableNo naming, no orderName columns as you create them

How do I practise this?

Run your own drills.

  1. Pick a real problem from your own work, with a clear output.
  2. Start a 20-minute timer. Stop when it ends, finished or not.
  3. Afterwards, write down the minute you lost time and why.
  4. Repeat on a different problem within the week.

Do not score yourself against the finalists. You do not have their problems or their results; compare yourself to your last drill.

Proof beats claims here, which is the argument in how to prove GTM skills without a Clay certification. A saved, dated drill with its output is a small piece of that.

Where this advice stops working

A 20-minute build cannot tell you whether emails land in inboxes, whether a data provider holds up across months, or whether replies get handled fast. Those parts of the job are where campaigns win or die, and they are why what a GTM engineer actually does is longer than a Clay table. Treat the format as a test of speed and framing, and judge the rest elsewhere.

I'm Malik, a GTM engineer in Islamabad. More about me.