I've used it but recently moved back to plain claude code. We use claude at the company and weirdly the experience has become less and less productive using opencode. I'm a bit sad about it as it was the first experience that really clicked and got great results out of. I'm actually curious if Anthropic knows which client is used and if they negatively influence the experience on purpose. It's very difficult to prove because nothing about this is exact science.
I think Anthropic just highly RL’s their model to work best with it’s Claude Code’s particular ways of going about things.
All the background capability Claude code now has makes things way more complex and I saw a meaningful improvement with 4.6 versus 4.5, so imagine other harnesses will take time to catch up.
