Games is loosely defined here, as we run the bench across hundreds of unique environments. For some, the models write code to play a game, either one-shot or via a harness where they can iterate and use tools. Some they play directly, making a decision on each game tick. Some are real-time, giving the models a harness where they can write code handlers or submit decisions to interact with environments directly.

Coding is what we test for most heavily. Testing this via a game format (instead of correct/incorrect answers) allows us to score code objectively, scale to smarter models, and directly compare performance to other models. When we built the first iteration last year, I was surprised by how well it mapped to subjective experience with using models for coding. Games really are great for measuring intelligence.