It depends on what your task is and how precise your prompts are. Planning with fable or 4.8 and laying out the plan in step by step process and coding with mimo v2.5 pro or dsv4pro or qwen 3.7 max and doing a final review with 5.5 has worked really well for me for infra stuff.
Coding with sufficiently precise plan takes almost all real work from the implementator, doesn't it? So it's not a fair comparison...