The ai coding boom has a reliability bill nobody has invoiced yet. faros ai’s 2026 telemetry across…
the ai coding boom has a reliability bill nobody has invoiced yet. faros ai’s 2026 telemetry across 22,000 developers shows incidents per pull request up 243%, median review time up 5x, and 31% more prs merging without review.
throughput went up, safety went sideways.
Context
Verified source: Faros AI's AI Engineering Report 2026, summarised on its blog on Apr 12, 2026, uses two years of telemetry from 22,000 developers across more than 4,000 teams. Its research page lists median review time at 5X and bugs per PR up 28%.
Faros's Sep 18, 2026 follow-up says that six months earlier it had flagged a 31.3% rise in PRs merged without review.
The 22,000 developers, the 5x median review time and the 31% rise in PRs merged without review match Faros, but the 31.3% figure was reported in the spring edition and the post presents it as part of the latest report. The 243% rise in incidents per pull request was not seen in the sources read, so unsupported here, not refuted. in the excerpts read, which show a 28% rise in bugs per PR. 'Throughput went up, safety went sideways' is the author's opinion.
Related work
- Faros blog on delivery speed ↗Apr 27, 2026.
- Faros report page ↗Headline numbers.
- Faros Speed Trap follow-up ↗Sep 18, 2026.
Watch next
- Open the Faros research page for the incident-per-PR figure.
Sources
Provenance
The note above is reproduced unedited from the original post, first published on Threads on 1 October 2026 at 02:47 IST. Sources are the papers and datasets the note draws on.
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