New tools for building agents

Today, we’re releasing the first set of building blocks that will help developers and enterprises build useful and reliable agents. We view agents as systems that independently accomplish tasks on behalf of users. Over the past year, we’ve introduced new model capabilities—such as advanced reasoning, multimodal interactions, and new safety techniques—that have laid the foundation for our models to handle the complex, multi-step tasks required to build agents. However, customers have shared that turning these capabilities into production-ready agents can be challenging, often requiring extensive prompt iteration and custom orchestration logic without sufficient visibility or built-in support.

To address these challenges, we’re launching a new set of APIs and tools specifically designed to simplify the development of agentic applications:

• The new Responses API⁠(opens in a new window), combining the simplicity of the Chat Completions API with the tool use capabilities of the Assistants API for building agents

• Built-in tools including web search⁠(opens in a new window), file search⁠(opens in a new window), and computer use⁠(opens in a new window)

• The new Agents SDK⁠(opens in a new window) to orchestrate single-agent and multi-agent workflows

• Integrated observability tools⁠(opens in a new window) to trace and inspect agent workflow execution

These new tools streamline core agent logic, orchestration, and interactions, making it significantly easier for developers to get started with building agents. Over the coming weeks and months, we plan to release additional tools and capabilities to further simplify and accelerate building agentic applications on our platform.

Introducing the Responses API

What this means for existing APIs

Introducing built-in tools in the Responses API

Web search

Any website or publisher can choose to appear⁠(opens in a new window) in web search in the API.

File search

Computer use

Evaluation details are described here

Agents SDK

Improvements include: