OpenAI offers several options for developers building agentic applications, each with different levels of control over the agent loop. The Responses API requires developers to manage the loop entirely, handling tool execution and state management themselves. The Agents SDK provides a runner within the application to manage the loop, but the developer is still responsible for deployment, tool implementation, and state storage. The Agents API, currently in public beta, offloads loop management, session handling, and context compression to OpenAI, simplifying development for users who want OpenAI to manage these aspects. AI
IMPACT Developers can choose the OpenAI agent development approach that best suits their need for control over the agent loop and infrastructure.
RANK_REASON The article compares different developer tools and frameworks offered by OpenAI for building agentic applications.
- Agent Builder
- AgentKit
- Agents API
- Agents SDK
- Apidog
- ChatKit
- codex
- Connector Registry
- DevDay
- DevDay 2026
- Evals
- Node.js
- OpenAI
- Responses API
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