Ironically the few people not scamming you for cache reads are Deepseek.

Everyone else charges a ridiculous amount but Deepseeks API is $0.003625 / M tok.

I'm surprised no one talks about this because of how significant it is. GPT 5.5 for example costs a ridiculous $0.50 / M tok cached. It's literally almost 140 times cheaper which matters a lot for tool calls.