Ai writes half the code now, but the workday didn't get shorter. bairesdev's q3 survey, out…
ai writes half the code now, but the workday didn't get shorter. bairesdev's q3 survey, out september 14, has 42% of developers saying ai writes at least half their code, up from 12% a year ago, while saved hours shift to review and learning.
the bottleneck moved from typing to reading.
Context
BairesDev's Dev Barometer Q3 2026 blog, fielded in August 2026 among 705 developers in more than 60 countries plus 41 enterprise CTOs, says the share whose code is at least half AI-written climbed from 12 percent to 42 percent in a year, with the largest group (30 percent) putting AI assistance between a quarter and half of their code. Hours saved averaged 13 per week against about 7 a year earlier, 51 percent spend more than a quarter of their week reviewing AI-generated work and 67 percent say more time goes to review than a year ago. The data deck, per earlier notes, words the 42 percent as at least half of code now assisted by AI tools.
The 42 and 12 percent are a self-reported respondent share and not a share of code, and the sample of 705 is not a census. The deck says assisted by AI tools while the blog says AI-written for the same 42 percent; which is the question wording is not clear, and neither measures generated code, so both wordings stay attributed. Out September 14 has no first-party date on the page text read. The bottleneck moved from typing to reading is the author's claim; the survey supports more review time by self-report only.
Watch next
- BairesDev's methodology detail and first-party date.
Sources
- Dev Barometer Q3 2026 (BairesDev blog)bairesdev.com
- Dev Barometer Q3 2026 data deck (BairesDev)bairesdev.com
Provenance
The note above is reproduced unedited from the original post, first published on Threads on 20 September 2026 at 22:50 IST. Sources are the papers and datasets the note draws on.
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