Have you looked at offers from CommandCode and similar? https://commandcode.ai/pricing

You can get access to DeepSeek 4.1 Flash for almost nothing, on a $1, $10, or $100 subscription. That can complement your 5 Claude accounts, or replace some. DS Flash 4.1 is so fast and cheap it’s ridiculous

All such sites are data harvesting operations. They'll collect your transcripts and sell that data to model companies to train on. It's a big business.

I occasionally get my agents to do sensitive things; I'm not comfortable having my transcripts collected and sold, so I don't use them. They say they anonymize them but who can ever tell? Not for me, thanks.