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OpenAI o3
open-in-new
<p>OpenAI o3 is a <a href="/facts/Reflection_(artificial_intelligence)/6DeKdR3h">reflective</a> <a href="/facts/Generative_pre-trained_transformer/U6JNeDMe">generative pre-trained transformer</a> (GPT) model developed by <a href="/facts/OpenAI/V7WVK1t4">OpenAI</a> as a successor to <a href="/facts/OpenAI_o1/VnVU2UhP">OpenAI o1</a> for <a href="/facts/ChatGPT/ptB1y6J5">ChatGPT</a>. It is designed to devote additional deliberation time when addressing questions that require <a href="/facts/Chain_of_thought_prompting/SVE53ytb">step-by-step</a> logical reasoning. On January 31, 2025, OpenAI released a smaller model, o3-mini, followed on April 16 by o3 and <a href="/facts/OpenAI_o4-mini/lE3hryks">o4-mini</a>. </p>