Education service · Acquisition
Codex knowledge-base tutorial (Feishu)
From a 700K-view Codex tutorial video to a paid course: an interaction designer sold a Feishu knowledge-base guide at 199, then took Skill and enterprise AI-workflow jobs
Author @sijun92625961, an interaction designer, says a video of himself using Codex reached more than 700,000 plays. People kept asking for help, so he turned his answers into a paid Feishu knowledge-base tutorial, first at 99 and then at 199. Users and companies who saw his posts later hired him for a custom Skill, AI workflow builds, staff training and one-on-one consulting.
The story
In spring, Codex was popular but only had an English interface and needed some network setup, so many people struggled with it. The author recorded a video of himself using Codex. He says it reached more than 700,000 plays, his best-performing piece, and brought followers and many questions about using Codex for work.
At first he answered for free. As requests grew, he built a tutorial in Feishu docs covering network setup, top-ups and how to use Codex, and sold it as a product. He writes that it sold to about two or three people at 99. Cheap buyers expected a lot of support, so he raised the price to 199; nobody bought for the first few days, then sales trickled in to fewer than 30. The post does not name a currency.
Three more income lines followed. One user wanted AI help revising bid documents, and the author built him a Skill with the documents, software install, network and API configured, charging part of a custom fee. Companies that saw his Codex and bid-document posts asked for custom automation: he built an AI workflow for one company and did workflow setup and consulting for another, including teaching staff to use Codex and Claude Code. He also did a few one-on-one custom AI plans.
He says his follower count is modest but AI income now covers his daily expenses. His method is to post the problems he hits with AI and how he solved them, so people with the same problems come to him, and then sell tutorials or guided help. No amounts are given for the individual income lines.
Source excerpt
怎么用 AI 赚点小钱？今天把我通过 AI 赚点小钱的经验和步骤完整分享给大家，毫无…
@sijun92625961 · Read the full source
- What was delivered
A Feishu-docs knowledge-base tutorial on configuring and using Codex, plus a custom bid-document Skill, enterprise AI workflows and staff training.
- Customers
Individuals learning Codex, one user who revises bid documents, two companies, and a few one-on-one consulting clients.
Lessons and acquisition
A Codex walkthrough video (stated at 700K+ plays) and ongoing public posts about using AI; buyers and companies reached out on their own. The video platform is not named.
Costs, risks and open questions
Low-priced buyers demanded more support, which led to the price rise. Total revenue, the currency and fees for the Skill, enterprise and consulting work are not given. Figures are the author’s own account and were not independently verified.
Tools and topics
- Codex
- Claude Code
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