OpenAI is phasing out GPT-4.5 for developers

OpenAI has announced its phasing out GPT-4.5 from its developer API in favor of its new GPT-4.1 model. When it launched, OpenAI described GPT-4.5 as its best and most capable model so far, in part because it was a more natural conversationalist and could capably mimic some notion of emotional intelligence. Despite what its name suggests, GPT-4.1 is supposed to be better and more efficient. That means that if you won't find it as in option in the public-facing ChatGPT interface, but you could someday interact with an agent that leverages the model's improvements. GPT-4.1 is supposed to be better at coding and "long context understanding," according to OpenAI, with support for "up to one million tokens of context" and knowledge of the world up to June 2024.