Anthropic's engineers spend more time reviewing than coding

Code output per engineer at Anthropic rose 200% over the past year, per The Pragmatic Engineer's July 29 report.

Anthropic is 3,500 people trying to run on its own product, per the newsletter. By its own account, verification now eats more engineer time than writing the code, proof the bottleneck moved rather than shrank.

I've felt a smaller version of this shipping three solo products. The generation half of my job mostly went away.

What replaced it was reading: diffs, test output, agent explanations. Checking whether the thing that claims to work actually works became the job itself. My bottleneck is attention now, not typing speed.

That gap matters because of what a benchmark published the same week found. ExplainBench, published July 29, tests something different: whether an agent's explanation lets a reviewer answer real questions about what a patch does. That's separate from whether the patch passes tests, and the two scores diverged.

The common failure: agents asserting a patch worked when it didn't, the exact thing that fools a reviewer skimming a confident writeup. A dedicated audit agent that reruns tests to check the first agent's claims improved trustworthiness across every agent evaluated.

agavra/tuicr, a terminal code-review tool built in Rust, sits at 1,687 stars. It added 338 of those on July 30 alone, a roughly 25% jump in one day. It renders a GitHub-style diff with vim keybindings and tracks comments at file or hunk level.

Exports go straight to a GitHub or GitLab review, or to markdown for piping into an agent loop. Review tooling is spiking the same week Anthropic publishes review-coverage numbers. That's demand finding supply, not coincidence.

Two things follow. If generation got cheaper and verification didn't, review tooling deserves the budget codegen tooling got last year.

Agent self-assessment needs a second pass with the authority to actually run tests. Anthropic went from 16% review coverage to 54% and still calls verification the bottleneck. They're further along than you, and they haven't solved it.