Ryo shows how to use Gemini, ChatGPT, and Claude for A 20‑minute side hustle
Ryo, a 13‑hour‑day office worker and father, explains how he builds side‑hustle assets in just 20 minutes a day using three major AI chat tools. He compares ChatGPT, Claude, and Gemini on usability, speed, and content quality, then shares his own workflow that relies heavily on Gemini for drafting note articles and Gemini Notebook for YouTube scripts.
What you can do with it
AI at Work →Define target person and situation with ChatGPT
What you get You can draft samples and disclaimers.
Guides you through 5 steps to define one person, one problem, and one deliverable.
- Who for
- founders, marketers and operations
- Cost
- free tier
- Effort
- minutes
Use it for
- Define target person and situation
- Score product ideas on 4 criteria
- Draft samples and disclaimers
How to set it up · From the article
- Write one person, one situation, one problem in three lines.
- Ask ChatGPT for product ideas and score them on the four criteria.
- Create a sample, a delivery procedure, and disclaimers.
- Post a free sample and ask where the audience gets stuck.
Watch out Human must verify facts, rights, and tone before delivering to clients
ChatGPT in the tool directory · 8 changes covered
Key points from the news
- Gemini offers fastest response and real‑time Google Search integration.
- Claude excels at natural Japanese prose but has strict free‑tier limits.
- Ryo uses Gemini for note articles and Gemini Notebook for YouTube scripts, achieving a 20‑minute daily side hustle.
The guide highlights Gemini’s rapid response and real‑time Google Search integration, Claude’s natural Japanese prose and strict free‑tier limits, and ChatGPT’s versatility but formulaic output. Ryo’s method involves collecting ideas on his phone, feeding them to Gemini, and refining the draft with minimal editing. He also demonstrates how Gemini Notebook can pull from uploaded PDFs and memos to produce accurate, brand‑consistent scripts.
Readers learn three practical steps: try Gemini’s free version on a smartphone, experiment with emotional prompts, and finally organize materials in Gemini Notebook to automate content creation.
The story so far
4 episodes →- Ryo shows how to use Gemini, ChatGPT, and Claude for A 20‑minute side hustlethis story
[Definitive Edition] ChatGPT, Claude, Gemini... Which one should you actually use? A complete guide for beginners and the 'AI usage strategy' discovered by a dad working 13
note.com · 23 September 2026
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This text was published by note.com and written by りょう｜国家資格パパ×1日20分のAI副業. It is reproduced here with attribution so you can read it in full; the rights remain with the publisher. Read it at the source ↗
Coverage and discussion
6sources- AI Side Hustles Don't Stop at 'What Should I Sell?'. 5 Steps to Decide on Your First Product in 30 Minutes with ChatGPTPress · note.com ·
- On the day I wrote an article about spending 300 hours on AI, the AI told me, 'I can't do any more today.'Press · note.com ·
- ChatGPT, Claude, and Gemini: How do they differ when given the same task?Press · note.com ·
- ChatGPT, Gemini, Claude. If you're not sure which one to use, try asking all three the same questionPress · note.com ·
- Maintaining Accuracy in AI Document Comparison: How to Use Gemini Notebook, ChatGPT, and Claude and Create Decision-Making MemosPress · note.com ·
The headline, key points and digest above were generated by Digest AI's editorial model from the linked sources. Automated summaries can contain errors: the sources are the record. Spotted a mistake? Tell us. Published by Martin K., who runs Digest AI and handles corrections.
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