A 26-year-old makes $11,000 a month building AI agents on a model that costs him almost nothing.
His setup is a "harness swap":
-> Codex is the control system
-> DeepSeek is the model
1 goal, typed once → Codex plans and executes it step by step → a local agent reads his files, keeps context, writes and runs the code → DeepSeek powers it all for a fraction of an OpenAI subscription.
3 ways he turns it into caps:
> sell the config packs and system prompts as a paid guide
> build MVPs and parsers for clients in a fraction of the usual time
> drop the same AI agents into small businesses that can't afford OpenAI prices
He doesn't ping a chatbot. He runs an autonomous coder on the cheapest model that works.