Writing
- Which agent framework should you use? 14 SDKs and the hosted agent APIs compared on lock-in, durability and priceOpenAI Agents SDK, Claude Agent SDK, Pydantic AI, Google ADK, LangGraph, Mastra, the Vercel AI SDK and seven more, next to the hosted agent APIs from OpenAI, Anthropic, AWS, Google and Microsoft. What each is for, where the lock-in hides, what the hosted ones cost per hour and per tool call, and rules for picking one.2026-10-16
