Yesterday, Monday, July 20, 2026, I decided to use Anthropic Claude’s Fable 5 and its extension in Google Chrome to build my decision integrity AI app. Fable 5 completed complex technical work within my Bubble app in several minutes that would have taken me days to do manually even with the guidance of an AI chatbot. Claude’s ability to go into a vibe coding app like Bubble has been a game changer that I wished I learned a month ago when Claude’s Google Chrome extension feature was shipped.
Consequently, my resistance to vibe coding has drastically subsided. Now I can vibe code for 10 hours a day, longer than my ability to write/create fiction, nonfiction, pitch decks, and business plans for 6 to 8 hours a day or my capability to write contracts and laws between 4 to 6 hours per day.
The biggest issue I have with Claude’s Fable 5 is how expensive it is to use it. Within 90 minutes, I burned through my upgraded $200 Max plan that I purchased seconds before using it. Plus, I spent another $200+ in credits that I purchased so that I could extend my work.
I immediately switched to using Claude’s Opus 4.8 to save money because I don’t have hundreds or thousands of dollars to spend a week. It accomplishes work so much slower than Fable 5 but it gets the job done and saves me money. It gets an hour work done that would have taken me several hours or a day to accomplish if I was doing it manually with an AI chatbot advising me.
I’m so grateful for AI. It has made me a much happier person.
JON RIKI KARAMATSU 