Perplexity just launched what might be the most audacious marketing campaign in AI right now. It is called the "Billion Dollar Build," and the pitch is simple: use Perplexity Computer, the company's AI agent, to build a startup worth $1 billion. The winner gets up to $1 million in seed funding.

It sounds electric. It is also full of catches.

The eight-week competition opens for registration on April 14 and runs through early June, ending with a live-streamed pitch event where the top 10 finalists present to a panel of judges. The prize pool is framed as "up to $2 million to build and scale," combining up to $1 million in seed investment from the Perplexity Fund and up to $1 million in Perplexity Computer credits.

Now here is where it gets interesting. Buried in the terms and conditions: "Perplexity Fund is under no obligation to invest in any participant." The investment is not a prize. It is not a grant. It is not a gift. If you win, Perplexity can still decide to give you nothing. The terms spell it out: Perplexity Fund can invest in "zero, one, two, three, or more companies, or no companies at all, at its sole discretion."

It gets better. To enter, you need an active Perplexity Pro ($17/month) or Max ($167/month) subscription before midnight Pacific on April 13. There is no cost reimbursement. You pay for your own compute. You pay for your own subscription. If you burn through credits building your startup, that is on you.

And the data clause is where founders should really slow down. By entering, you grant Perplexity a worldwide, royalty-free promotional licence to use your company name, product, code, concepts, workflows, founder likenesses, and demo footage for marketing and investor relations. Without further consent. Without compensation. Perplexity also retains the right to access and review all queries, prompts, task outputs, and workflow data from participants during the competition.

There is also a non-restriction clause: participation "does not restrict Perplexity, Perplexity Fund, or their affiliates from independently developing, creating, investing in, or pursuing products, services, companies, or ideas similar to or competitive with any submission." Translation: if you show them your idea and they like it, they can build their own version. Participants are warned not to submit anything they consider a trade secret.

Look, I get the appeal. Perplexity Computer is genuinely interesting technology. The company claims the tool saved over $1.6 million and did the equivalent of 3.25 years of work in its first four weeks. Those are internal estimates, but even if they are half right, the tool has juice.

But let us call this what it is: a brilliantly designed user acquisition campaign dressed up as a startup competition. Perplexity gets thousands of founders paying for Max subscriptions, building products on its platform, generating case studies it can use forever, and revealing their best startup ideas in full detail. The founders get a chance at money that might never come.

Silicon Valley has been pulling this move for years. The contest format lets you generate content, acquire users, and collect product ideas without paying for any of it. The only new twist: AI makes it possible to build something real in eight weeks, which means Perplexity might actually discover a genuine unicorn in the pile. Just do not expect them to pay for it.