Author here.
We originally developed our evolution-inspired tool to optimize LLM prompts.
To our surprise, we found that the same method also worked well for getting better performance out of a base model on ARC-AGI tasks.
We're open-sourcing the evolver tool today. It is built to be adapted to many different optimization problems. (Some coding required)
You can read more about it at https://imbue.com/research/2026-02-27-darwinian-evolver/
Happy to answer questions!