Tag Archives: lmsys

Before launching, GPT-4o broke records on chatbot leaderboard under a secret name

Getty Images reader comments 31 On Monday, OpenAI employee William Fedus confirmed on X that a mysterious chat-topping AI chatbot known as “gpt-chatbot” that had been undergoing testing on LMSYS’s Chatbot Arena and frustrating experts was, in fact, OpenAI’s newly announced GPT-4o AI model. He also revealed that GPT-4o had topped the Chatbot Arena leaderboard,… Read More »

Mysterious “gpt2-chatbot” AI model appears suddenly, confuses experts

reader comments 25 On Sunday, word began to spread on social media about a new mystery chatbot named “gpt2-chatbot” that appeared in the LMSYS Chatbot Arena. Some people speculate that it may be a secret test version of OpenAI’s upcoming GPT-4.5 or GPT-5 large language model (LLM). The paid version of ChatGPT is currently powered… Read More »