In one breath
Workbench is TurnTwo's free toolkit for getting more out of AI models. It answers the questions you can't eyeball — how many tokens is this, what will it cost, which model fits, where is a prompt wasting money — with tools that run right in the browser, no signup for the free ones.
Most tools are pure logic and free. A few add an optional step that calls a model, and those run on your own key — never the owner's. It's a way to meet the practice, not a paywalled product.