Are these kernel available ? I'd love to try that !

Feels like they should have released some code, yeah, but gpt5 success rate was high enough that it looks like you can just pass the kernels they got from https://github.com/ScalingIntelligence/KernelBench/ to gpt5 (with up to five rounds of feeding back compilation/correctness errors back to the model) and get the results yourself.