Atlassian research coined the AI efficiency paradox. DX's Q2 data now finds it inside engineering, with the Developer Experience Index falling
Enterprise AI research has developed a predictable format lately with high adoption figures and rising time-savings claims galore. It can be harder to find reports that measure the friction underneath, but DX's Q2 State of AI Impact in Engineering report is one of them. DX is an engineering intelligence platform used by 500-plus organizations – Dropbox, Block, Pinterest, and BNY among them – to measure and improve how developers spend their time.
For the first time in DX's history, the aggregated Developer Experience Index (DXI) across its 500-plus customer base has moved downward. The median has slipped from 67 in Q3 2025 to 65 in Q2 2026 – a two-point drop that only looks modest until you understand where the data comes from. DX's data comes only from its own paying customers, and those customers pay for DX precisely so that DXI moves up over time.
Justin Reock, Deputy CTO...
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