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OpenAI Launches GPT-4.5 for ChatGPT—It’s Huge and Compute-Intensive
Internally called Orion, GPT-4.5 is OpenAI’s largest model to date, and it’s only available through the company’s $200 monthly ChatGPT subscription.
The company’s CEO, Sam Altman, posted on social media earlier in February that OpenAI would “ship GPT-4.5, the model we called Orion internally, as our last non-chain-of-thought model.” Nick Ryder, who leads the company’s foundations-in-research team, clarified that this statement pertained to streamlining OpenAI’s product road map, not its research road map. While first designed as a way to easily switch between the different available options, the dropdown model menu in ChatGPT has become difficult to parse for users trying to understand when it's advantageous to choose o3-mini-high rather than GPT-4o or some other pick. It may be difficult to compare it to other versions due to OpenAI’s characterization of GPT-4.5’s potential strengths, like a stronger intuition, better emotional intelligence, and aesthetic taste, leaning into an almost abstract sense of anthropomorphism.
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