Rakuten fixes issues twice as fast with Codex

Rakuten has improved its software development process by using OpenAI's Codex. The company now fixes issues twice as fast, increasing efficiency and reducing downtime. This advancement highlights the practical benefits of AI-assisted coding in real-world applications.

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PublishedWednesday, March 11, 2026 at 2:00 PMMar 11, 02:00 PM

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Rakuten uses Codex, the coding agent from OpenAI, to ship software faster and safer, reducing MTTR 50%, automating CI/CD reviews, and delivering full-stack builds in weeks.

How Rakuten uses Codex to reduce recovery time, automate code review, and ship faster.

Rakuten⁠(opens in a new window) is a global innovation company operating across e-commerce, fintech, and mobile communications, serving both consumers and merchants at massive scale. With 30,000 employees worldwide, its engineering teams ship across a large, complex product ecosystem where both speed and reliability are essential.

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Rakuten fixes issues twice as fast with Codex

Original article excerpt