What Is The Difference Between ChatGPT, Google Bard, And Bing Chat? ChatGPT Bard Bing Pricing ChatGPT’s original version remains free to users. ChatGPT uses GPT technology, and Bard uses LaMDA, meaning they’re different “under the hood.” This is why there’s some backlash against Bard. The platform is trained on conversations and human dialog, but it is also apparent that Google uses search data to provide real-time data. ChatGPT, Bard, and Bing are all interesting tools, but what does the future hold for publishers and users?