OpenAI reports that Asana used Codex, its AI coding tool, to replace an outdated testing system. The work was completed in two weeks, a task Asana had estimated would take five years. The total cost was about $12,000.
This example highlights how AI coding assistants can compress long-running maintenance projects into short, inexpensive efforts. Because the only source is OpenAI's own account, the figures reflect the company's claims rather than independent verification.
The case also suggests that legacy system modernization—often seen as a slow, costly process—may become a faster target for AI-assisted engineering teams. However, the source does not provide details on the scope of the testing system or any trade-offs involved.