ETtech Explainer: How OpenAI is moving the needle with new ‘deep research’ tool

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.