I would suggest that based on your current level of "trust" in these things (justifiably very low, I use zero openai or anthropic products myself) that you look into self hosting locally something reasonably capable and smart on your own hardware, on llama-server or something functionally equivalent to it. And running it in something like the opencode harness, using zero of the opencode API or online services. Qwen 3.8-flash-next will run on a lot of different hardware setups that are within the reach of normal people, or possibly deepseek v4 flash 1017, glm5.3-flash, things in that general category.
Qwen 3.8-flash-next is great, but if they say SOTA models from 6 months ago weren't good enough for the kind of code they write, Qwen isn't going to cut it yet.