nac
★ 284
vs
MetaGPT
★ 71.0k
nac vs MetaGPT
nac: nac is an open-source agent harness designed for managing ambitious, long-running tasks like experiments, training, and infrastructure. It employs a thread-and-episode architecture where a central orchestrator plans work, launches threads, and receives structured summaries of accomplishments.; MetaGPT: MetaGPT is a multi-agent framework that assigns different roles to LLMs, enabling them to collaborate on complex software development tasks. It takes a one-line requirement and outputs comprehensive project artifacts, mimicking a software company's entire process.
01
TL;DR
nacMulti-Agent · ★ 284
Managing and orchestrating long-running experimental tasks
MetaGPTMulti-Agent · ★ 71.0k
When to choose:
- You want to experiment with or demonstrate the 'software company SOP' multi-agent pattern (PM, architect, engineer generating specs and code).
- You are looking for the reference implementation of research papers from the team such as AFlow, SPO, and AOT.
When to skip:
- You want an actively updated general-purpose production agent framework; the repository's last push was in January 2026.
- You are on Python 3.12+ or do not want to install Node.js and pnpm alongside Python (README specifies Python 3.9–3.11).
02
Side-by-Side Comparison
Field
nacMetaGPTCategory
Multi-Agent
Multi-Agent
Stars
★ 284
★ 71.0k
License
Apache-2.0
MIT
Install Command
curl -fsSL https://raw.githubusercontent.com/arcee-ai/nac/main/scripts/install.sh | sh
pip install --upgrade metagpt
Updated
1d ago
9mo ago
Open Source
Yes
Yes
Tags
AI Agent, Orchestration, Task Management
Multi-Agent System, Large Language Models, Software Development
03
Features
nac01Agent Harness for long-running, ambitious tasks
02Thread-and-Episode Architecture for task decomposition
03Central Orchestrator for planning and thread launching
04Structured Summaries (Episodes) of completed work
05Flexible Model Provider Authentication (Arcee, OpenAI, etc.)
MetaGPT01Accepts single-line requirements and generates comprehensive software artifacts (e.g., user stories, APIs, documentation).
02Emulates a software company by assigning distinct roles (e.g., PM, Architect, Engineer) to LLM agents.
03Orchestrates collaborative processes using Standard Operating Procedures (SOPs) for complex task completion.
04Supports integration with various Large Language Models and APIs (e.g., OpenAI, Azure, Ollama, Groq).
05Enables advanced capabilities like data interpretation and automated workflow generation.
04
Use Cases
nac↳Managing and orchestrating long-running experimental tasks
↳Automating and supervising AI model training runs
↳Streamlining infrastructure management and deployment
↳Accelerating prototyping and development cycles
MetaGPT↳Data Interpreter
↳Debate
↳Researcher
05
Best For
nac—
MetaGPTMost PopularEssential
FAQ
FAQ
What is the difference between nac and MetaGPT?
Both nac and MetaGPT are in the Multi-Agent category. nac has 284 stars, while MetaGPT has 71.0k stars.
Which is better, nac or MetaGPT?
The best choice depends on your use case. Choose nac if Managing and orchestrating long-running experimental tasks, and MetaGPT if Data Interpreter.
Is nac free or open source?
Yes, nac is open source on GitHub (Apache-2.0).
Is MetaGPT free or open source?
Yes, MetaGPT is open source on GitHub (MIT).
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