If I can describe the problem and its solution well enough, Flash just does it.
If I can’t (or am feeling too lazy to) describe the problem well enough, and can only describe the desired outcome, then I’ve noticed models like GPT 5.5 being clearly better at working out a solid solution on their own.
There are some clear differences in the capabilities of the models, but it’s also clear that smaller open weight models are good enough to be a huge help for most tasks.