Yes
in my day to day work they have been indiscernible in terms of output
stymaar on Hacker News
In the thread “Kimi K3.1 scores 55 on Artificial Analysis, placed on the Pareto line”, replying to this comment
Helped: Local model matched paid model output quality.
Got in the way: Speed was the only reason to use paid plan.
It really depends on the type of task you're doing and how you're using it, because for the past two month the only reason I've had to use my company's paid Opus plan instead of my local Qwen-3.8-Next was speed. I use Qwen as a back-up plan when my token limit is reached and in my day to day work they have been indiscernible in terms of output.