OpenAI releases GPT-4.5 claiming 10X efficiency over GPT-4, but says it’s ‘not a frontier model’

Join our daily and weekly newsletters for the latest updates and exclusive content on industry-leading AI coverage. Learn More It’s here: OpenAI has announced the release of GPT-4.5, a research preview of its latest and most powerful large language model (LLM) for chat applications — yet pointedly, the company says specifically in the model’s system card (a report outlining its capabilities, which leaked early online and is attached to the bottom of this piece) that “GPT-4.5 is not a frontier model, but it is OpenAI’s largest LLM, improving on GPT-4’s computational efficiency by more than 10x.” It’s also not a “reasoning model,” the new class of models offered by OpenAI, DeepSeek, Anthropic and many others that produce “chains-of-thought,” or stream-of-consciousness like text blocks in which they reflect on their own assumptions and conclusions to try and catch errors before serving up responses/outputs to users. It’s still more of a classical LLM. It’s also, perplexingly, far-and-aw ... Read full article.