OpenAI's New 'GPT-2' Sparks Debate; GPT-4.5 Turbo and GPT-5 Expected by Fall

Speculation is rife in the tech community about OpenAI's mysterious new model, referred to as 'GPT-2' by some, which has sparked a debate over its capabilities and classification. While some users suggest it could be an updated version of previous models like GPT-4 Turbo or a fine-tuned LLAMA 3 model, others believe it might not surpass the capabilities of GPT-4.5 or even GPT-5. There are also suggestions that it could be a new transformer architecture, potentially bringing smaller models up to the level of GPT-4. Amidst these discussions, there are predictions that OpenAI might launch GPT-4.5 Turbo for ChatGPT subscribers by summer, making GPT-4 freely accessible, and GPT-5 for ChatGPT Enterprise might be announced at DevDay 2024 in the fall. The model could also be related to GPT-2C, CR+, or be a meta-system-prompted LARP as a flawed previous-gen 'chatbot', and might be a version like GPT-4.413.