7 Frequently Asked Questions About Devin | What Beginners Want to Know First
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What you'll learn in this article
Devin is an autonomous AI software engineer created by a US company called Cognition Labs. Just like a human engineer, it can plan a project, write code, find and fix bugs (mistakes in programs), run tests, and even deploy (publish) to a production environment — almost entirely on its own.
Since its announcement in March 2024, Devin has attracted enormous attention, and as of 2026 it is being used around the world, including in Japan. Devin writes code inside its own sandbox (an isolated, safe workspace), researches documentation on the web, corrects errors on its own, and even creates pull requests (proposals to change code) when it's done. This might sound complicated to beginners, but the simplest way to think about it is: "an AI companion that does the programming for you."
Devin does have a free plan. However, its features are limited, so if you want to use it seriously you'll need to move to a paid plan. As of August 2026, the pricing structure is as follows:
As a rough guide, running Devin at full capacity for one hour is said to cost around $8–$9. For beginners, the recommended approach is to try the free plan first, get comfortable with it, and then consider a paid plan.
On June 17, 2026, Devin completed 100% Japanese localization. This means the UI and all menus are now fully available in Japanese, so you can give instructions to Devin in Japanese and carry on your entire development workflow in Japanese. Even when Japanese engineers collaborate with teams around the world, they can work through Devin in Japanese, making the language barrier much less of an issue.
As for accuracy, Cognition AI president Russell Kaplan has said that "Japan is number one or two in the world for user engagement," reflecting how actively the Japanese market is using it. Major companies such as SHIFT, DeNA, and Mizuho Securities have already adopted it, and Japanese-language support is robust. Even beginners can ask questions in Japanese and Devin will naturally understand and get to work, so those who aren't confident in English have nothing to worry about.
Code created with Devin can be used commercially. However, it is important to carefully review the terms of service regarding copyright and liability for AI-generated code. In general, code generated by AI tools is often owned by the user, but if the AI has referenced third-party code or libraries, you must comply with those licenses.
Because Devin works by referencing web documentation and open-source code, it's worth double-checking that the generated code does not conflict with any existing licenses. If you're using Devin in a corporate context, choosing the Enterprise plan and consulting the support team will help put any legal concerns to rest. For beginners using it for personal projects, there are generally no issues, but if you're planning to publish or sell something, consulting a professional is advisable.
As of 2026, AI programming tools fall into three broad categories:
Cursor boasts an 80.4% adoption rate for fix tasks, GitHub Copilot achieves 92.3% for documentation tasks, and Devin is praised for its sustained improvement trend over time. Beginners who want to "learn gradually on their own" are better suited to Cursor or Copilot, while those who want things "built automatically" are better suited to Devin.
From March 7, 2026, Devin supports PWA (Progressive Web App — a technology that lets you use a web app like a native smartphone app). On iPhone, go to Safari, tap "Share" → "Add to Home Screen," and you can launch Devin just like an app. On Android, you can install it from the browser in the same way.
That said, Devin is a full-scale software development tool, so a computer is overwhelmingly more practical than a small smartphone screen. On a smartphone, you'll mainly use it to check progress on the go or send simple instructions. If you're a beginner trying to learn in earnest, setting up a proper PC environment is recommended.
If you run into something you don't understand while using Devin, start by checking the official documentation at docs.devin.ai. Because Japanese localization has progressed significantly, basic usage guides and troubleshooting information can be read in Japanese.
In Japan, SHIFT has signed a master partner agreement and offers full Japanese-language support from initial setup through ongoing operation. In addition to enterprise users, there are now more community forums and spaces where individual users can ask questions. Since Devin itself is an autonomous AI, you can show it an error message and it will often find a solution and fix things on its own. Even beginners who don't know "what they don't know" can simply ask Devin "What should I do about this?" and usually get a helpful hint.
In July 2026, Devin partnered with NVIDIA, making Devin Outposts available on Brev. This means Devin can now automatically handle tasks such as testing machine learning models using GPUs (high-speed computing chips) and creating CUDA kernels (specialized computation programs).
Going forward, Devin is expected to expand into even more areas of development, bringing closer a future where even beginners can build sophisticated systems without specialized knowledge. Adoption in the Japanese market is accelerating, and there are emerging moves to use Devin in educational institutions and corporate training programs. Rather than AI "taking human jobs," a future where AI "grows alongside humans as a partner" is gradually becoming reality through Devin.
Even programming beginners can dramatically accelerate their learning by treating Devin as a "reliable senior engineer" they can turn to. Start by trying the free plan and move forward at your own pace, one step at a time.
This article is a cross-post from AI Friends.
