GPT-4.5

GPT-4.5
DeveloperOpenAI
Year introducedFebruary 27, 2025 (2025-02-27)
Language/s15 languages

GPT-4.5 (codenamed "Orion") is a large language model developed by OpenAI as part of the GPT series. Officially released on February 27, 2025, GPT-4.5 is available to users subscribed to the ChatGPT Plus and Pro plans across web, mobile, and desktop platforms. Access is also provided through the OpenAI API and the OpenAI Developer Playground, but the company plans to phase out API access to the model in July.

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