GitHub Copilot vs Kiro: what developers actually say

B has the higher approval score, 59% against 42% for A, but that rests on only 38 opinions from 30 authors. A has much more data: 659 opinions from 535 authors, 501 firsthand. A's complaints cluster on code quality (93 negative against 38 positive) and reliability (54 against 14), and its cost mentions lean negative (80 against 60); B's cost mentions are 3 positive and 1 negative, too few to weigh. No comment in either set states a direct A versus B preference, so the pick turns on sample size and which complaints matter to you.