It runs some kind of A13, so similar to an iPhone 11. But it may not be a fully capable version of that chip. All retail 'Apple Silicon' Macs use a version of M

It runs some kind of A13, so similar to an iPhone 11. But it may not be a fully capable version of that chip. All retail 'Apple Silicon' Macs use a version of M1, which is more of an enhanced A14. It might be similar to the Apple Developer Transition Kit from two years ago, which was an A12 with extra GPU power. But until someone can get software actually running on it, will be hard to know.