A catalog of major agent frameworks: LangGraph, CrewAI, Google ADK, AWS Strands, Microsoft Agent Framework, OpenAI Agents SDK, Mastra, Pydantic AI, Agno.
Hyperscalers co-design free SDKs (e.g., Strands, ADK). They tie those SDKs to metered runtimes - Bedrock, Vertex AI. Revenue shifts to inference and deployment.
Modern models - Gemini, Claude Sonnet 4.6, Llama 4 Scout - handle planning and tool use. That trims the need for heavy orchestration layers.
