Alternatives to Pizza Bot

Self-improving open-source AI agent by Nous Research with a built-in learning loop, multi-channel gateway, and model-agnostic runtime. MIT licensed.

LangChain's low-level agent orchestration runtime: durable graphs, streaming, human-in-the-loop, and persistence. About 39,835 GitHub stars.

OpenAI's official Python and TypeScript agent runtime: agents, handoffs, guardrails, sessions, and tracing.