Risk: High

Starting a side hustle with an AI code completion plugin for custom IDEs can be risky for someone starting from scratch, especially if they can't afford to lose money. The potential losses include money invested in development, time spent on building and marketing the plugin, energy dedicated to the project, and confidence if the venture doesn't succeed. Beginners could spend money on development costs and not see returns if the plugin doesn't gain traction in the market. Startup costs for developing the plugin can be significant and may not pay off if there isn't enough demand or competition is high. Online discussions mention instances of failing to attract users or monetize the plugin, resulting in financial losses. I'd rate the risk a 1 out of 3 because beginners face high chances of losing money due to development costs, market competition, and potential lack of demand.