Remote MCP server

OpenAI’s Responses API now includes built-in tools for image generation, Code Interpreter, and remote Model Context Protocol (MCP) server support

The API supports o-series reasoning models (o1, o3, o3-mini, o4-mini), GPT-4o, and GPT-4.1, enabling advanced agentic applications

The new image generation tool (gpt-image-1) supports multi-turn edits and real-time streaming previews, available via the o3 model

Code Interpreter is now integrated, enabling data analysis, complex math, coding, and “thinking with images” within the API workflow

File search improvements include attribute filtering with arrays and support for multiple vector stores, enhancing document retrieval

o3 and o4-mini models can call tools/functions directly within their reasoning chain, producing richer and more contextually relevant responses

Reasoning tokens can be preserved across requests and tool calls, reducing latency and developer costs while improving model intelligence