ChatGPT is an AI tool which has taken the world by storm. 

It can do a lot of work for you, like writing emails, blogs, coding, providing information and much more.

But in order to use ChatGPT, you need to create an account, and some people have concerns giving away their data to create an account. 

If you want to use ChatGPT, or GPT model without having to login, here are some ways

Using Bing Chat lets you use ChatGPT without an OpenAI account. It uses GPT-4 and live data sources(available for a limit tries without sign in).

Bing Mobile app is a free app for Android and iOS that also uses GPT-4. It enhances your mobile search experience.

Merlin is a browser extension that acts as a virtual assistant. It helps with emails, searches, and summaries.

ChatGPT Writer is another browser extension that helps with writing tasks. It generates AI replies, suggestions, and summaries.

Forefront.ai is a web app that lets you use ChatGPT-3.5, ChatGPT-4, Claude Instant 1.2, and Claude 2. You can use ChatGPT-3.5 for free.