Czech startup Macaly connects its platform to ChatGPT and Claude

Czech startup Macaly, founded by entrepreneur Petr Břek together with Tomáš Rychlík and Martin Ďuriš, keeps growing even after being sold to the Belgian group Team.blue for hundreds of millions of crowns late last year. The no-code platform for building websites and apps has already passed the mark of 100,000 projects created and has launched a new service, Macaly Cloud, which opens up its infrastructure to outside language models — ChatGPT and Claude.

The founders' story reads like a real rollercoaster. The trio first built the successful tool Avocode, which they sold to their biggest client, the American company Ceros, in 2021 — again for hundreds of millions of crowns. After leaving the corporate world, they then tried to launch a project called Langtail, but it stalled at a modest fifty thousand crowns in monthly revenue. With only enough money left for two more months of operation, the team took a gamble and created Macaly — a platform for “vibe coding,” meaning building apps simply by dictating tasks to artificial intelligence.

The bet paid off almost instantly: just nine days after launch, Macaly was already earning more than their previous startup had in half a year. The rapid growth caught investors' attention, and seven months after launch, in December 2025, the founders sold the company to Belgium's Team.blue — again for a sum in the hundreds of millions of crowns.

Despite the sale, the team led by Břek keeps developing the product. The new Macaly Cloud lets AI agents not just write code but immediately publish finished websites and apps — complete with a database, hosting and their own domain. “People are already paying for AI agents they trust and that produce quality code. But they were missing the last step — how to actually get the result online,” Břek explains. He says the team spent two years building the infrastructure an agent needs to deliver a finished product, and is now offering that same infrastructure to other AI systems as well.

Technically, the solution uses the MCP (Model Context Protocol) standard and more than seventy built-in skills — everything from finding photos and processing PDFs to setting up payments and user accounts. All projects run on European servers. Břek himself demonstrated the service's capabilities by building a game based on a Prague street: connecting Macaly Cloud to ChatGPT and the new Astra model, he generated a 3D model of the street in Blender and programmed a full game complete with sound effects, SEO optimisation and publishing on its own domain — all in just a couple of hours of work.

For the founders, who were not yet 35 when they pulled off their second startup exit worth hundreds of millions of crowns, the new service is one more step toward mass adoption of the product. After the sale, the team retained a significant stake in the business.