OpenAI has introduced several new features in its API, including two deep research models named o3-deep-research and o4-mini-deep-research, designed to enhance complex research capabilities by breaking down questions, performing searches, running code, and citing sources. These models are priced at $10 to $40 per million input/output tokens. Additionally, OpenAI has integrated web search functionality into its o3, o3-pro, and o4-mini models, allowing real-time web searches within the model's reasoning process at a reduced price of $10 per 1,000 tool calls. The update also includes webhooks for API event notifications. These advancements aim to enable developers to build more sophisticated and scalable AI workflows, combining deep research with writing, coding, and media generation in unified chat environments. The features have been adopted by platforms such as Poe, which now supports switching between deep research and other AI models seamlessly.