Why do some AI tools cost $20 a month and others charge hundreds?

It mostly comes down to the cost of running the AI and who the tool is built for. A $20/month tool like ChatGPT Plus is a general-purpose assistant. A $500/month tool is usually built for a specific, high-stakes job where mistakes are expensive. Think of it like the difference between a consumer drill and an industrial one. They both spin, but one is built to run all day without breaking. Uber recently set a $1,500 monthly limit on an internal AI coding assistant, which is a useful signal. That price isn't random. It reflects the real cost of the heavy-duty computers running in the cloud, the specialized data it was trained on, and the fact that a developer who saves 10 hours a week with that tool is easily worth the expense. You're not just paying for the AI's 'brain.' You're paying for the safety rails, the integrations with your other software, and a support team that can fix things fast. A cheaper tool might give you a raw, powerful model but leave you to figure out the rest. An expensive one packages everything together. So when you see a high price, ask what job it's replacing. If it's replacing an hour of a lawyer's or developer's time each day, the math works out fast. If you're just curious and experimenting, start with the free or $20 tiers. You probably don't need the industrial drill yet.