In November 2025, Mercor’s twenty-something founders became, by Forbes’ count, the world’s youngest self-made billionaires, after raising $350 million at a $10 billion valuation. About a week later, thousands of contractors on one of its largest AI training projects woke up locked out of Slack. The project had been cancelled by email. Some were offered their jobs back, at roughly a third less per hour.
I’m not writing this from the outside. I’ve onboarded onto more than ten Mercor projects: rating model responses for a frontier lab, writing evaluation rubrics for consumer tasks, building agentic coding challenges, recording my own screen while completing real-world errands so a model could learn from them. I’ve been through the welcome calls, the unpaid assessments, the quiz-gated onboardings, the silent offboardings. I’ve read more “you’ve been carefully selected” emails than I can count.
Here’s the strange part: it’s still some of the best-paying flexible work available to a knowledge worker right now. Real rates, weekly payouts, work you can do from anywhere. That’s exactly why the dark side matters. The money is real, and so are the traps, and nobody at Mercor is going to explain the traps to you, because the system works fine for them whether you figure it out or not.
This is Episode 1 of a four-part series. Today: how to recognize the five patterns that burn new contractors, and, for paid subscribers, the preparation playbook I wish I’d had before my first project. Episodes 2 through 4 go deeper: the AHT metrics game, the cat-and-mouse of audits and enforcement, and how to stack projects into something resembling stable income.
Let’s start with what you’re actually walking into.
The five patterns
1. You are “carefully selected,” and instantly disposable
Every project welcome doc opens the same way: you’ve been carefully selected, you’re joining something first-of-its-kind, the team is so excited to have you. Take the flattery at face value and you’ll misread your position entirely.
The operating unit at Mercor is the project, not the person. Projects appear with 48-hour pilot deadlines, pause without explanation, resume in “waves,” and vanish mid-sprint. Onboarding is random: you might get a live call, or just a 40-minute document and a quiz. Offboarding is more random still: often no email at all, just a task queue that never refills and a Slack channel that goes quiet. The Forbes-reported mass cancellation wasn’t an aberration; it was the normal lifecycle, at unusual scale. When a frontier lab’s priorities shift, your project shifts with it, and you’re the shock absorber.
The mistake new contractors make is treating a project like a job. It’s not. It’s a gig with a countdown timer you can’t see.