Quartet

Quartet is a live application that makes four AI models work together to build software. Built for the Multi-Agent Software Development track. The main goal is to show that a team of small open source models can match the skill of one massive model while costing much less. The system uses four specific roles: Spec, Coder, Tester, and Repairer. These agents talk to each other in a shared chat room using the Band protocol. The Spec agent plans the work. The Coder writes the logic. The Tester writes code to find bugs. The Repairer runs the files in a safe sandbox and sends error reports back to the Coder to fix. Beyond saving money, Quartet also lets you assign highly specialized models to specific jobs. For example, you can use a fast model to plan the application and a heavy reasoning model like the open source 120b model to write the code. This means you get the best features of every model working together on one team. Users can watch this happen live on our dashboard. You can watch the work move between nodes and compare the final code against a single large model.