Coding with an agent tends to settle into the same loop: prompt, check, re-prompt and repeat, burning time and tokens each pass. There's a better way, and it starts before any code gets written.
This talk puts two approaches head to head: the prompt-and-iterate loop most of us have fallen into, and spec-driven development. You'll see what each one produces, and what a spec gives you that prompting can't, including decisions you can review before any code exists and context your whole team can build on.
This talk has been presented at React Summit 2026, check out the latest edition of this React Conference.
