Have you been using those models? I've been using a hand-rolled orchestrator with Mimo v2.5 (I seem to be paying $0.017 per million/tokens after their heavy caching) and it's been very impressive. I started with it in Opencode as a harness, then had it build its own micro-harness with stdlib-only Python, then used that to build a local stdlib-only Orchestrator with CLI and web harness, and now I'm using that for improving itself and now multi-project wider-ranging software. I talk to a steward who investigates and plans, then the plans are handed off to parallel worker agents who go through a work, test, interrogate, review, eval state machine for quality (all autonomously) with me at the end just reviewing the work or getting notified if the work items aren't progressing due to the workers getting stuck. So far the only "getting stuck" has been bugs/configs on my part, all at a pretty great quality bar, and at a price that makes me laugh at things like Opus.

I'm still using Claude at work (they're the only approved provider), but wow are the smaller models starting to SMOKE the big ones. At this point, all I'd consider paying out of my own pocket for is the lowest-limit Anthropic/GPT plan to get a big model as the Steward, but I wouldn't pay for ANY of the Anthropic models as the workers who do all the work. And as time passes, I don't know if I'd even do that; the open models are serving SO well.