I tested Grok 4.20 Reasoning. It is capable for complex logic, and the pricing...

https://online-wiki.win/index.php/How_Many_GPUs_Does_xAI_Colossus_Have%3F_Deconstructing_the_Cluster_Myth

I tested Grok 4.20 Reasoning. It is capable for complex logic, and the pricing is $1.25 per 1M input tokens. Whether you are building agents or need deep context, it is worth a look