Asana cleared 5 years of engineering work in 2 weeks with Codex

Asana, a company that helps teams coordinate work, used OpenAI Codex to remove an outdated testing system from its codebase. The project took 1.5 weeks of engineering effort spread across two calendar weeks and cost approximately $12,000 in model and infrastructure costs, compared to a previous estimate of roughly $6 million and at least five years of work. Up to four coding agents worked in parallel on separate copies of the codebase, with engineers reviewing and approving each proposed change twice daily. This completion of a years-long project in weeks has led the company to reconsider which other long-running software projects it believes are practical to attempt.