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AI Coding AssistantsAI Business & IndustryZenn AI/MLPublished: Oct 12, 2026, 10:00 JST

RecurAI launches Zenn dev diary: can AI-built tools cover 月約9,000円 costs

RecurAI launches Zenn dev diary: can AI-built tools cover 月約9,000円 costs

3 Key Points

  1. What happened

    RecurAI, a project by someone without programming expertise, published the first entry of its Zenn development diary, laying out four working principles and a plan to build small tools with multiple AIs.

  2. Why it matters

    That approach puts the focus on whether the tools actually get used and sold rather than just on whether code can be generated.

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Context & Analysis

RecurAI started from everyday friction — repeated manual work, copying data between Excel or notes, tools that have too many features or cost too much — and a belief that AI now lets people without coding backgrounds turn ideas into working tools. It is upfront that AI-generated code is not automatically correct and that checking how it behaves, security measures, and ongoing fixes are still required. Rather than aiming at a large service at once, RecurAI says it will make small, purpose-focused tools and use different AIs for planning, organizing specs, writing code, and reviewing. The project also plans to publish failures, design mistakes, and how they were solved, not just successes.

To test demand, RecurAI is collecting examples of repetitive tasks, transcription, missed checks, and dissatisfaction with existing tools through an anonymous survey, and says it will record everything from demand research through selection, design, implementation, testing, sales, and revenue checks. It states that tools can be technically buildable yet fail as a business if no one actually has the problem. It makes no guarantee of success, and says it wants to share judgment errors, disagreements between AIs, and the time and cost of development where possible.

FAQ
What is RecurAI trying to find out?
It is testing whether about 9,000 yen a month in AI usage fees can be recovered through revenue from developing and selling tools built with AI.
How does RecurAI use different AIs?
It uses ChatGPT for planning and design, Gemini for independent verification, and development environments such as Cursor for implementation when needed.
Can I try a beta version?
RecurAI says it is considering beta testing opportunities in the future, but it is not accepting individual invitations now and answering the survey does not guarantee early access.

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