ETtech Explainer: ChatGPT maker’s ‘deep research’ and o3-mini vs DeepSeek

OpenAI on Sunday added ‘deep research’ agentic capabilities to ChatGPT and last Friday released o3-mini, the most cost-efficient of its reasoning agents, that “advances the boundaries of what small models can achieve”, the company said. ET explains the two announcements that come on the heels of the stir caused by Chinese upstart DeepSeek.