Summary: OpenAI launches AgentKit for building AI agents

Why It Matters: OpenAI is moving from providing simple chat models to offering a full platform for building and managing complex AI agents. This makes it much easier for companies to create automated workflows that can actually do work, rather than just answer questions.

What Changed:

• Launched AgentKit, a new suite of tools for developers to build and deploy AI agents.
• Added Agent Builder, a visual drag-and-drop tool for designing multi-agent workflows.
• Introduced ChatKit for quickly embedding customizable chat interfaces into apps and websites.
• Created a Connector Registry to manage data connections across Google Drive, Microsoft Teams, and other tools.
• Expanded Evals capabilities with automated prompt optimization and support for testing third-party models.
• Released reinforcement fine-tuning (RFT) for o4-mini and private beta for GPT-5 to improve agent reasoning.