MetaGPT

★ 71.0k

harness-sdk

★ 8.9k

MetaGPT vs harness-sdk

Q: Which is better, MetaGPT or harness-sdk?

By GitHub stars, MetaGPT has more community adoption, but the best choice depends on your specific use case.

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.; harness-sdk: This monorepo holds the Strands Agents SDKs for Python and TypeScript plus Strands harness, a fully assembled agent created with one create_harness() call. It runs in your own process and covers the agent loop, tools, MCP, multi-agent patterns, memory, sessions, guardrails, tracing and evals across Bedrock, Anthropic, OpenAI, Gemini and other providers.

TL;DR

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).

Read MetaGPT full review →

harness-sdkMulti-Agent · ★ 8.9k

Replacing a hand-rolled agent loop with a maintained SDK

Read harness-sdk full review →

Side-by-Side Comparison

Field

MetaGPT

harness-sdk

Features

MetaGPT

01Accepts 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.

harness-sdk

01Strands harness: a ready-made agent with default model, tools, memory, sessions and context management

02Lower-level SDKs in Python (3.10+) and TypeScript (Node 22+) to own the agent loop yourself

03Lifecycle controls such as turn limits, token budgets, cancellation and hooks on every step

04Built-in MCP, structured output, streaming, multi-agent patterns, guardrails, tracing and evals

05Model portability across Amazon Bedrock, Anthropic, OpenAI, Gemini, Ollama and custom providers

Use Cases

MetaGPT

↳Data Interpreter

↳Debate

↳Researcher

harness-sdk

↳Replacing a hand-rolled agent loop with a maintained SDK

↳Building production agents on AWS with Bedrock models

↳Prototyping a coding or research agent quickly with the harness and CLI

↳Adding tracing, guardrails and evals to existing agent code

Best For

MetaGPT

Most PopularEssential

harness-sdk

EssentialTrending

FAQ

What is the difference between MetaGPT and harness-sdk?

Both MetaGPT and harness-sdk are in the Multi-Agent category. MetaGPT has 71.0k stars, while harness-sdk has 8.9k stars.

Which is better, MetaGPT or harness-sdk?

The best choice depends on your use case. Choose MetaGPT if Data Interpreter, and harness-sdk if Replacing a hand-rolled agent loop with a maintained SDK.

Is MetaGPT free or open source?

Yes, MetaGPT is open source on GitHub (MIT).

Is harness-sdk free or open source?

Yes, harness-sdk is open source on GitHub (Apache-2.0).

Cloud Infrastructure

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Alternatives to MetaGPT →Alternatives to harness-sdk →MetaGPT details →harness-sdk details →learn-claude-code vs MetaGPT →MetaGPT vs CrewAI →

TL;DR

Side-by-Side Comparison

Features

Use Cases

Best For

FAQ

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