Langgraph Alternative Python Packages

reactifact

Reactive, artifact-driven agent runtime: agents transform versioned, typed, provenance-aware artifacts inside an evolving context — no graphs to draw.

agentcore-graph

Native agent-graph runtime written in C++20

cubeloop

CubeLoop — a Pythonic, async-native agent harness core designed for high performance, readability, and production-grade persistence.

ctxloom

Reactive, artifact-driven agent runtime: agents transform versioned, typed, provenance-aware artifacts inside an evolving context — no graphs to draw.

helix-framework

Helix gives you agents that actually behave in production: hard budget limits, semantic caching that cuts API costs by 40-70%, persistent memory, multi-agent teams, YAML-based task pipelines, and a 5-scorer eval suite.

micro-agent-router

An ultra-lightweight, zero-dependency state machine for routing agentic AI workflows and multi-step LLM chains without framework bloat.