OpenAI Agents SDK

You’re building an AI agent in 2026 and you’ve narrowed it down to three frameworks: Google ADK, OpenAI Agents SDK, and Mastra. They’re all production-ready, all well-documented, and all opinionated in ways that will either save you weeks or cost you weeks. After shipping agents with all three, here’s what actually separates them. The 2026 AI Agent Framework Trilemma: Google, OpenAI, or Open Source? The AI agent framework landscape reached a tipping point in 2026. The global AI agent market hit $7.84 billion in 2025 and is projected to reach $52.62 billion by 2030 at a 46.3% CAGR (Markets and Markets). Gartner predicts 40% of enterprise applications will embed task-specific AI agents by end of 2026 — up from less than 5% in 2025. Three frameworks now dominate serious production work: Google ADK (graduated to 1.0 GA, 8,200+ GitHub stars), OpenAI Agents SDK (launched early 2026, fast-growing), and Mastra (22,000+ GitHub stars, $13M seed round February 2026, 300k+ weekly npm downloads). Each reflects a fundamentally different philosophy about what an AI agent framework should do. Google ADK bets on interoperability and multimodal capabilities through native GCP integration and the Agent-to-Agent (A2A) protocol. OpenAI Agents SDK bets on opinionated guardrails and clean abstractions for OpenAI-native workloads. Mastra bets on TypeScript-first enterprise ergonomics and raw production performance. The framework you pick will shape your architecture for at least 18 months. Understanding the actual tradeoffs — not the marketing claims — is the only way to make the right call. ...

The OpenAI Agents SDK for TypeScript (@openai/agents) is a production-ready framework for building multi-agent AI systems in Node.js and browser environments. It ships four core primitives — Agents, Tools, Handoffs, and Guardrails — with first-class Zod integration, MCP support, and a dedicated RealtimeAgent for voice workflows. What Is the OpenAI Agents SDK for TypeScript? The OpenAI Agents SDK for TypeScript is an open-source framework published as @openai/agents on npm, reaching approximately 1.5 million downloads in a single 30-day window as of March 2026. It is the official TypeScript successor to Swarm, OpenAI’s earlier multi-agent experimentation library, and it ships production primitives that Swarm deliberately omitted: persistent sessions, guardrails, MCP tool servers, and a RealtimeAgent for speech-to-speech voice applications. Unlike the Python version — which has 19,000+ GitHub stars and 10.3 million monthly downloads — the TypeScript SDK targets developers who live in Node.js, Next.js, or edge runtimes where Python workers are not viable. The SDK wraps the OpenAI Chat Completions and Responses APIs, handles tool-call loops automatically, and lets you compose complex multi-agent pipelines without writing state machines by hand. It reached 2,100 GitHub stars and 128K weekly downloads within its first months, signaling fast adoption among the TypeScript AI community. ...

There is no single best AI agent framework in 2026. LangGraph dominates production deployments with graph-based orchestration and enterprise tooling. CrewAI gets you from idea to working prototype fastest with its intuitive role-based design. AutoGen excels at conversational, iterative workflows like code review and research. The right choice depends on your architecture — and increasingly, teams combine more than one. What Are AI Agent Frameworks and Why Do They Matter in 2026? AI agent frameworks are libraries and platforms that let developers build autonomous AI systems — software that can plan, use tools, make decisions, and execute multi-step tasks without constant human direction. Unlike simple chatbot APIs, agent frameworks handle orchestration: routing between multiple models, managing state across steps, and coordinating teams of specialized agents. ...