I actually have't looked back since trying opencode The ability to properly see what the agent is doing in tool calls and subagents is really unmatched, CC strips all reasoning and return values, only displaying tool calls, and you're unable to expand a single subagent, it's expand everything and scroll endlessly or show everything collapsed with basically no info at all (read x files, ran x commands) Just seems like extremely basic features are missing

There Seen to be more and more harness benchmarks out there, pretty interesting read:

https://neuralnoise.com/2026/harness-bench-wip/

You can check my profile for which one I like most :) I do think there have been efforts to benchmark different harnesses.

Personally I'm not going to choose one harness or another based on +/- a few percentage points in a benchmark. I'm going to use one the one that I find the most ergonomic, that isn't too bloated, etc. The models are the primary lever, not the harness.

Probably a matter of taste. I prefer the harness I wrote, I don't want to go near Anthropic's bloated mess of a harness with a 10-meter pole.