HomeOpenAI Retires o3 and GPT-4.5 Large Models
As a frontrunner in artificial intelligence, OpenAI's every technical move creates significant industry ripples. Recently, the company dropped a major announcement: it will retire two classic models—o3 and GPT-4.5—from its ChatGPT platform. The GPT-4.5, often called the "humanities genius," will be taken offline on June 27, while the o3, known for its hard-core reasoning capabilities, will follow on August 26.
The retirement of classic models stirs nostalgia
This sudden news was hard for many paid long-term users to accept, and social communities and discussion sections quickly filled with sadness and regret. Users accustomed to o3's deliberate "slow thinking" logic and GPT-4.5's natural, nuanced writing style shared screenshots as mementos; some even angrily called it the final reason to cancel their subscriptions. Although newer models offer stronger overall computing power, users widely miss the unique compatibility and textual warmth these two once provided.
Product simplification aims to clear the way for a new flagship
However, this retirement applies only to the web and mobile app versions; developers can still call these models through the underlying API. OpenAI's decision to streamline its offerings at this point clearly aims to optimize server resources and accelerate the path for upcoming flagship models such as GPT-5.6. As AI technology iteration speeds approach "monthly updates," the lifecycle of large models is rapidly shortening, ushering in a new era driven by more precise evaluations and faster iterations.
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As a frontrunner in artificial intelligence, OpenAI's every technical move creates significant industry ripples. Recently, the company dropped a major announcement: it will retire two classic models—o3 and GPT-4.5—from its ChatGPT platform. The GPT-4.5, often called the "humanities genius," will be taken offline on June 27, while the o3, known for its hard-core reasoning capabilities, will follow on August 26.
The retirement of classic models stirs nostalgia
This sudden news was hard for many paid long-term users to accept, and social communities and discussion sections quickly filled with sadness and regret. Users accustomed to o3's deliberate "slow thinking" logic and GPT-4.5's natural, nuanced writing style shared screenshots as mementos; some even angrily called it the final reason to cancel their subscriptions. Although newer models offer stronger overall computing power, users widely miss the unique compatibility and textual warmth these two once provided.
Product simplification aims to clear the way for a new flagship
However, this retirement applies only to the web and mobile app versions; developers can still call these models through the underlying API. OpenAI's decision to streamline its offerings at this point clearly aims to optimize server resources and accelerate the path for upcoming flagship models such as GPT-5.6. As AI technology iteration speeds approach "monthly updates," the lifecycle of large models is rapidly shortening, ushering in a new era driven by more precise evaluations and faster iterations.
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