OpenAI New Agent Builder Tool Leaks Ahead of DevDay 2025

OpenAI has once again stirred excitement in the developer community with a major leak ahead of its much-anticipated DevDay 2025 event. The leak reveals a brand-new tool called Agent Builder, designed to empower developers to create powerful AI agents with ease through a visual, no-code interface.

The information was first shared by the TestingCatalog account on X (formerly Twitter), and according to the leak, some users are already testing the tool in a closed environment.

What Is Agent Builder?

Agent Builder is a canvas-based development tool that allows users to build AI agents by simply dragging and dropping elements onto a visual interface. Developers can select from pre-built templates such as:

• Q&A agents

• Document comparison agents

• Custom multi-step task agents

There’s also an option to connect agents to various data sources, enabling real-time interaction with external content or proprietary business data.

Built-in Security Features

Security is clearly a priority in Agent Builder. The tool includes built-in defenses against common threats like:

• Prompt injection

• Jailbreaking attempts

Developer and early tester Alexey Shabanov noted that Agent Builder is “the smoothest agent builder canvas” he has ever used — a strong endorsement that’s fueling further interest ahead of the official launch.

What Can AI Agents Do?

Unlike basic chatbots, these AI agents are designed to understand complex instructions and carry out multi-step tasks.

For example, an agent could:

• Search and compare the best flight and hotel prices

• Complete purchases autonomously (with proper authorization)

• Automate customer support queries

• Handle large-scale data processing

Whether you're in e-commerce, enterprise SaaS, or internal ops, these agents can significantly boost productivity and reduce human workload. And for everyday users, these agents will soon be available through third-party apps and tools.

More Big Updates from OpenAI

Agent Builder isn’t the only major update from OpenAI this year. The company has already launched several headline-making tools, including:

• ChatGPT Pulse – a real-time AI feed

• Sora 2 – the next-gen AI video generator

• Sora – a new AI-powered social media platform

Rumors also suggest OpenAI may unveil a ChatGPT-powered browser at DevDay 2025. This would compete directly with Perplexity's Comet browser and rival Google Gemini by offering an AI-assisted web browsing experience.

What This Means for Developers

With the introduction of Agent Builder, OpenAI is democratizing AI agent development. What once required weeks of coding and deployment could now take just minutes with drag-and-drop tools and reusable templates.

This is not just a productivity tool — it’s a paradigm shift for how we build, deploy, and interact with AI agents.

Stay tuned for more updates during OpenAI DevDay 2025, where Agent Builder is expected to be officially announced. If you're a developer, now is the time to get excited — because building intelligent agents just got a whole lot easier.