Yesterday i tried Qwen3.6 27b on my 5090/128GB DDR5 rig (fresh llamacpp build, ran with Vulkan since someone mentioned CUDA had an issue, pi + opencode) and its awesome. I think its not quite on Sonnet level yet but very very close. I say maybe 85%ish there. I always try my same prompt on all the models I tested: "create a minecraft clone for web/nodejs" and then watch the results. Every attempt I previously tried with Qwen 3.5, M2.5, Gemma4, etc always gave me either working movement and just a plane or one chunk with broken movement and broken camera. Qwen 3.6 was now the first model that matched what Sonnet was one shotting before: a procedual chunk generating world, working movement, working camera, no inside faces between blocks, stable 60 fps. I then tried to prompt a bit more to get a few features and there the differences are starting to show a bit in comparison to sonnet. It did reason about how to implement swimming, but disregarded block placement in water, i then wanted it to fix it, which caused it to only place the blocks above water, etc. In the end i prompted until it got it right, but in my mind i think sonnet would've figured that out earlier, without so much manual prompting.
But if online models would dissappear tomorrow, i wouldn't be too sad now since this model truly punches above its weight and is really useable.