CoArena launches a free agent benchmark with a paid data business underneath

The YC S26 founders claim $60,000 in early revenue, though CoArena's site currently says new tasks and judging are paused.

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Primary source: Y Combinator

Why it matters

Computer-use agents are improving faster than fixed benchmarks can remain useful. CoArena is betting that free access can generate the live tasks, failure traces and human labels AI labs will buy.

A computer keyboard and mouse reflected on a screen, showing thermal heat map data with overlay graphics.

Prateek Jannu and Nitish Kovuru have launched CoArena, a service that sends two computer-use agents through the same user-submitted task and asks people to judge the results without knowing which model produced them.…

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