Note / 2026-09-15

AI coding assistants are in almost every engineering team, and write about 27% of the code that ships

Developers at more than 500 organizations report each quarter what share of their merged code an AI wrote. The average is 27.4%, and 30.8% among daily users. Adoption says who has a license; the merged share says who changed how they work.

For CTOs and engineering leads who report AI adoption to a boardViaro Networks1 min read
AI coding assistants are in almost every engineering team, and write about 27% of the code that ships

Almost every developer we work with uses a coding assistant every day. The share of merged code, that is, shipped code, those assistants actually write is stuck near 30%, and that gap is the number we ask for first.

DX, which asks developers at more than 500 organizations each quarter what share of their merged code was written by AI, reported on April 1, 2026 that the average moved from 22% to 27.4% in one quarter, a move DX calls smaller than it expected; its headline rounds the figure to about 30%. DX does not publish how many developers answered. Among daily users it reached 30.8%. Weekly and monthly users barely moved. DX's own reading is that the tooling improved faster than teams adapted to it: developers still have to change their workflow, learn to trust the output and find where it fits.

Inside a client's team we see the same shape. The ceiling is not the model. It is that three developers rebuilt how they work and the rest of the team added a chat window to the way they always worked. The first group merges agent code; the second group merges autocomplete.

Adoption says who has a license. The share of shipped code an agent wrote says where the practice actually is, and the two numbers are forty points apart.

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