A model that takes an action, reads the result, and picks the next step.
Skills tell the agent how to do the work. CLIs and MCP servers let it act.
Give it a way to spot a failure, try a fix, and prove the fix worked.
FAQ
What's Subsidization?Why does my Codex or Claude Code subscription give me so much more usage than the same models on OpenCode Go, Devin or Cursor?
OpenAI and Anthropic grow the apples. At their own stand, Codex and Claude Code, they sell them for less than the API price they charge everyone else, because keeping you in their apps is worth more to them than the margin. Selling below price like that is a subsidy.
Cursor, Devin and OpenCode Go don't own a farm. They buy the same apples at the full API price, then ship them to you through their product. Same $20, fewer apples.