I have been on the fence if I think composer is useful, but the speed argument is one I hadn’t really considered. I use cursor with Opus almost exclusively but the other day I tried using OpenCode locally with a 6-bit quantized version of Qwen 3.5 and holy crap the speed and latency were mind blowing. Even if not quite as sharp as big boi Opus and the gang.
Now you’ve got me thinking I should give composer another go because speed can be pretty darn great for more generic, basic, tasks.