Generative AI's Act Two ↗

Editorial Notes

Sequoia’s market-level analysis of the generative AI landscape, structured as a transition from “Act 1” (technology push — models getting bigger) to “Act 2” (customer pull — solving real problems). For technical leaders evaluating vendors and platforms, the value is in the updated market maps organized by use case rather than by technology layer — this is how you should structure your own evaluation, starting from the problem you’re solving rather than the infrastructure you want to build. The article names specific vendors across infrastructure, tooling, and application layers (LangChain, Pinecone, Hugging Face, Modal, Replicate), and discusses which segments are consolidating vs. fragmenting. Pay attention to the analysis of agentic systems and UI paradigms, which signals where the market is heading. Use this alongside the a16z architecture article for a complete picture: a16z gives you the technical stack, Sequoia gives you the market dynamics.