Dev Claims 700K Lines of Code in 4 Days with Claude Opus

Developer haydendevs claims he completed a year's worth of work—700,000 lines of code—in just 4 days with Claude Opus, though he notes the models still require full human supervision to steer them away from low-quality output.

2026-10-07 ~ 2026-10-07 · 3 related posts

• Dev claims 700,000 lines of code in 4 days — "just me and Opus" — haydendevs · 2026-10-07
• Dev claims a year of work in 4 days: 700,000 lines of code with Opus — haydendevs · 2026-10-07
• Dev on working with AI models: "my only job now is to steer it away from slop" — haydendevs · 2026-10-07