OpenAI unveils ‘o3’ reasoning AI models in test phase

OpenAI said on Friday it was testing new reasoning AI models, o3 and o3 mini, in a sign of growing competition with rivals such as Google to create smarter models capable of tackling complex problems.

CEO Sam Altman said the AI startup plans to launch o3 mini by the end of January, and full o3 after that, as more robust large language models could outperform existing models…