Alternatives to CrewAI

framework · orchestration tools positioned as replacements for CrewAI. 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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LangGraph

framework · orchestration

Low-level orchestration framework for stateful, long-running agents, built by LangChain. Provides state management, persistence, and controllable graph execution; used in production by Klarna, Replit, and Elastic. LangGraph Platform adds managed deployment.

AI AgentOrchestrationState Management

AFIT verdict

The mainstream low-level agent orchestration framework. Strong state and persistence, well proven in production (Klarna, Replit, Elastic). Wins on control and extensibility; the cost is that it sits low in the stack with a steeper learning curve.

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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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