OpenAI Company CEO Sam Altman (Sam Altman) tweeted on Dec. 20 on Platform X.Hints at release of next-generation inference AI model o3.

Altman tweeted "ho ho ho, see you tomorrow", "found a clue, should say oh oh oh", three repetitions of "o" and "h", suggesting that OpenAI will release the o3 model tomorrow. "The screenshot attached by IT Home is as follows:
OpenAI is currently working on a new generation of inference models that will "think" more deeply about user questions, and in terms of naming, it may skip the "o2" designation and go straight to "o3" in order to avoid a trademark conflict with UK telecom operator O2. In terms of naming, the company may skip the "o2" name and use "o3" to avoid a trademark conflict with British telecom operator O2.
"12 Days of OpenAI" enters its final day tomorrow, after 11 days of releasing a full-blooded version of the o1 model and launching related APIs, as well as upgrades to function calls, structured output, inference effort control, developer messaging, and visual inputs.