
The three tiers are not just for show. The top-tier OpenAI model in the bot is 20 times more expensive than the lower-tier model, both for input and output. If everyone is given access only to the flagship, a simple “translate a paragraph” will cost as much as analyzing a contract.For images, I chose Nano Banana 2.1. It was released in October and, at the same resolution, is about a quarter cheaper than Nano Banana 2. Version 2 remains a backup in case the










