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OpenAI said on Monday that it would soon wind down the availability of GPT-4.5<\/a>, its largest-ever AI model, via its API. GPT-4.5 was released only in late February.<\/p>\n Developers will have access to GPT-4.5 via OpenAI\u2019s API until July 14, after which they\u2019ll have to transition to another model in OpenAI\u2019s catalog, the company says. OpenAI is positioning GPT-4.1<\/a>, which launched Monday, as the preferred replacement.<\/p>\n \u201c[GPT-4.1] offers similar or improved performance than GPT-4.5 in key areas at a much lower cost,\u201d an OpenAI spokesperson told TechCrunch via email. \u201c[W]e will [be] deprecating GPT-4.5 to prioritize building future models.\u201d<\/p>\n To be clear, GPT-4.5 isn\u2019t leaving ChatGPT, where it\u2019s available in research preview for paying customers. OpenAI is only phasing it out of the API.<\/p>\n GPT-4.5,\u00a0code-named Orion<\/a>, was trained using more computing power and data than any of OpenAI\u2019s previous releases. It improves upon its predecessor, GPT-4o<\/a>, in areas such as writing and persuasiveness<\/a>, but despite its scale, GPT-4.5 falls short of \u201cfrontier-level\u201d on a number of industry benchmarks.<\/p>\n GPT-4.5 is also very expensive to run, OpenAI admits \u2014 so expensive that the company warned in February that it was evaluating whether to serve GPT-4.5 via its API in the long term. The model\u2019s pricing reflects this: GPT-4.5 costs $75 for every million input tokens (roughly 750,000 words) and $150 per million output tokens, making it one of OpenAI\u2019s costliest offerings.<\/p>\n<\/div>\n