Alternatives to LangGraph

framework · orchestration tools positioned as replacements for LangGraph. Open a matrix to compare side by side.

Kastor

Declarative language and toolchain for AI agents: define agents, tools, and prompts in HCL, then compile to a framework or manage them with plan/apply semantics on a hosted platform. Billed as "Terraform for AI agents".

AI AgentDeclarativeHCL

AFIT verdict

Terraform for AI agents (HCL-declarative agent definitions). Worth watching if your team knows IaC, but still an early PoC: it currently compiles only to LangGraph, and the core plan/apply/drift detection is not implemented (the README lists it as Planned for v0).

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CrewAI

framework · orchestration

Open-source framework that orchestrates multiple autonomous AI agents through role-playing collaboration, using intuitive crew/agent/task abstractions. CrewAI Cloud and Enterprise add hosting and operational tooling.

AI AgentMulti-agentRole-playing

AFIT verdict

Orchestrates multiple agents through a role-collaboration abstraction; intuitive to pick up, with a large community (55k+ GitHub stars). Good for standing up multi-agent workflows quickly, but less precise than low-level frameworks for complex control flow.

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DeepSeek Harness

framework · orchestration

An open-source, plugin-based agent harness from DeepSeek AI designed for building AI agents.

dshdeepseekdeepseek-harness

AFIT verdict

Developers looking to build AI agents using a plugin-based architecture should try this framework. The catch is that it is currently in development (dev status) and the provided material lacks detailed evaluation or usage documentation.

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