ChatGPT is an AI chatbot model released by Open AI in November 2022.

In no time, social media platforms are flooded with ChatGPT-related posts. The internet users explored how ChatGPT can be used for various tasks like question answering, code generation, code debugging, blog post writing, learning new concepts, etc. Some of them even exposed the limitations of ChatGPT
For example:

Now it's time to look at the other chatbots which are similar to or better than ChatGPT. In recent times, along with ChatGPT, the following applications also attracted the internet users.

ChatSonic

✔️ ChatGPT has no access to the internet.
ChatSonic overcomes these two drawbacks, using Google Search to create content with the latest information. Along with text inputs, ChatSonic supports voice inputs also.

✔️ ChatSonic has an interface similar to ChatGPT. This video shows how to interact with ChatSonic.

Perplexity AI is an AI startup that offers AI-powered search tools. Two such search tools are Perplexity AI Ask and Bird SQL.

Perplexity AI Ask
Perplexity AI Ask works on top of OpenAI GPT 3.5 and Microsoft Bing. Similar to ChatGPT, Perplexity AI Ask answers your query. However, what makes it different from ChatGPT is that, along with the generated answers, it also displays search results.

It uses OpenAI GPT 3.5 and Microsoft Bing to directly answer any question:
https://twitter.com/i/status/1600551871554338816

Perplexity AI Bird SQL
Recently, the Perplexity AI team launched another search tool that helps to get the most relevant tweets for the given search query. Bird SQL is a Twitter search interface. It uses Open AI Codex to translate user queries into SQL and then retrieves the most relevant tweets.

Its a twitter interface that is powered by Perplexity's structured search engine.
https://twitter.com/i/status/1603441221753372673