ChatGPT has a new model named o1-preview that can reason like a human but is it worth upgrading to ChatGPT Plus to use it?

Just days after launching its o1 models, OpenAI increases daily limits. Here's what you get now - free users included!

The gist is that perhaps o1 was devised to make use of the process-based reinforcement learning approach, especially since o1 also automatically makes use of chain-of-thought. Whereas generative AI usually requires a user to invoke chain-of-thought, o1 automatically does so. The user seemingly can’t prevent it from happening.