Cloudflare cut its AI code review bill 68%: $2.43 to $0.77 per review
Cloudflare Blog · rss · 2026-10-20
Cloudflare details how it cut its AI code reviewer's average cost per review from $2.43 to $0.77 (down 68%) and median time from 4m09s to 1m32s. Key fixes: splitting a shared cache prefix across all repos (first-request cache hits were only 14–26%), moving reference docs into the prompt (Codex reviewer calls dropped 15.9→9.6), removing unusable tools, parallel file reads, and skipping reviewers on re-reviews. 40% of savings came from code optimizations, the rest from model choice; the spike traced to an August switch to Anthropic models incl. Claude Opus 4.7, plus token growth to 2.99M per review.
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