```html Is OpenAI's ChatGPT Pro Worth the $200 a Month? OpenAI has recently released o1 Pro Mode, claiming it to be the smartest model in the world. But does it live up to the hype? I signed up for the service, tested it, and analyzed the release notes to find out. The Cost of ChatGPT Pro To access ChatGPT Pro, you need to pay $200 a month. For this, you get unlimited access to advanced voice and o1, the full version of the o1 preview we've been testing. However, if you currently pay $20 a month for…