Developer Rewrites Codebase with Opus Agent Over a Weekend for Fractional Subscription Cost

Lucas Meijer described rewriting a codebase with an Opus agent over a weekend, using only about 2/7 of his $200 weekly Anthropic subscription, with the agent performing its own performance analysis and validation.

2026-10-20 ~ 2026-10-20 · 2 related posts

• Reading Opus's perf-analysis transcripts is great entertainment and learning — lucasmeijer · 2026-10-20
• A weekend rewrite burned just 2/7 of a $200 Anthropic subscription — lucasmeijer · 2026-10-20