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    Asana Completes Five-Year Project in Two Weeks Using Codex

    Asana accelerated its engineering process, completing five years of work in just two weeks with the help of OpenAI's Codex, showcasing the power of AI-driven coding in modern software development.

    openai.com•August 18, 2026•2 min read

    Key Facts

    • Asana reduced a 5-year project to 2 weeks, showcasing AI's potential to transform timelines.
    • $12K cost vs. $6M estimate reveals significant efficiency gains and resource reallocation opportunities.
    • Codex's success indicates a competitive edge in tech adoption, potentially attracting more clients.
    • The rapid completion of Enzyme removal suggests vulnerabilities in legacy systems can be swiftly addressed.
    • Asana's strategic shift to AI-driven engineering may redefine project feasibility and innovation capacity.

    Summary

    Summary

    Asana successfully replaced its outdated testing system, Enzyme, using OpenAI Codex, completing a project that was expected to take five years in just two weeks for approximately $12,000. This deployment not only streamlined their engineering processes but also significantly reduced costs compared to the original staffing estimate of around $6 million.

    Background

    Asana is a work management platform that helps teams coordinate and execute tasks efficiently. Before the deployment of Codex, Asana's engineering team faced challenges with their outdated testing tool, Enzyme, which had fallen out of active maintenance and hindered the modernization of their frontend stack.

    Challenge

    The primary challenge was the removal of Enzyme, which had become a blocker to upgrading Asana's codebase. The engineering team needed a solution that would allow them to modernize their testing system without the lengthy timeline and high costs associated with traditional staffing methods.

    Solution

    Asana implemented OpenAI Codex to facilitate the removal of Enzyme. The process involved using a five-sentence prompt that allowed up to four coding agents to work in parallel on separate copies of the codebase. An engineer monitored progress twice daily and reviewed all proposed changes. Simpler instructions proved to be more effective than complex setups.

    Results

    In just 1.5 weeks of engineering effort over two calendar weeks, Asana completely removed Enzyme. The total model and infrastructure costs amounted to about $12,000, a stark contrast to the previous estimate of at least five years and approximately $6 million. This rapid completion has altered Asana's approach to long-running software projects, making them more feasible to undertake.

    Key Insights

    The deployment of Codex demonstrated that not all lengthy projects need to take years to complete. By leveraging AI agents, companies can free up engineering resources to focus on more creative and complex tasks, potentially transforming their approach to software development.

    Customer Testimonial

    “Not every years-long project will collapse into weeks. But agents can give engineers more room for craft—and make once-impossible work worth attempting.” — Asana Engineering Team

    Entities Mentioned

    Companies

    Asana
    OpenAI

    Products

    Codex
    Enzyme

    Technologies

    AI agents
    automations

    Key Concepts

    engineering efficiency
    AI in software development
    cost reduction
    codebase modernization
    project management
    automation in testing
    parallel coding
    software migration

    Definitions

    Codex
    Codex is an AI-powered tool developed by OpenAI that assists in coding tasks by generating code based on prompts.
    Enzyme
    Enzyme is an outdated testing system that Asana replaced to facilitate easier upgrades to its codebase.
    AI agents
    AI agents are automated systems that can perform tasks and make decisions based on data inputs, enhancing productivity.
    frontier models
    Frontier models refer to advanced AI models that push the boundaries of current technology in terms of capabilities and performance.
    codebase
    A codebase is the collection of source code used to build a particular software application.

    Use Cases

    • →Replacing outdated testing systems
    • →Accelerating software development timelines
    • →Modernizing frontend stacks
    • →Testing AI agents on migrations
    • →Improving project management efficiency
    • →Enhancing code review processes

    Frequently Asked Questions

    How did Asana manage to complete five years of work in two weeks?

    Asana utilized OpenAI Codex to automate and streamline the coding process, allowing multiple coding agents to work in parallel on the codebase. This significantly reduced the time required for the project.

    What was the cost of using Codex for this project?

    The model and infrastructure costs for using Codex amounted to approximately $12,000. This is a stark contrast to the estimated $6 million that would have been spent on staffing for the original plan.

    What challenges did Asana face with the old testing system?

    The outdated testing system, Enzyme, was no longer actively maintained and became a barrier to modernizing Asana's frontend stack. This made it difficult for the company to upgrade its code effectively.

    What impact did this project have on Asana's future software projects?

    The successful removal of Enzyme has changed Asana's perspective on long-running software projects, making them more feasible to tackle in the future. They now believe that other complex migrations and rewrites can also be accomplished more quickly.

    How does Asana plan to use AI agents moving forward?

    Asana intends to test AI agents on other migrations, rewrites, and performance issues that were previously thought to require years of work. This approach aims to give engineers more time to focus on their craft while maintaining oversight of the work.

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