Best AI agents for building multi-agent systems (2026)

G

Google Deep Review

NewresearchFreemium

Google Research's multi-agent system that checks research papers, design docs, and legal or financial documents for logical gaps and unsupported claims.

R

Ruflo

frameworksOpen source

Open-source multi-agent meta-harness for Claude Code, Codex, and MCP clients; Oct 13 release adds Mods (mission workflows) and a single control plane with human approval.

A

AutoGen

frameworksOpen source

Microsoft's framework for multi-agent conversations.

C

CrewAI

frameworksOpen source + cloud

Framework for role-based multi-agent crews.

A

Agno

frameworksOpen source + cloud

Python framework and runtime for building, running and managing multi-agent systems with memory, knowledge and tools.

A

AgentScope

frameworksOpen source

Framework for building and running transparent multi-agent applications with visual debugging.

P

PentAGI

codingOpen source

Autonomous multi-agent system for running penetration testing tasks.

L

LangChain Deep Agents

frameworksOpen source

Library for long-running agents with subagents and skills; 0.7.23 (Oct 7) adds pinned_skills.

O

OpenAI Agents SDK (Python)

frameworksOpen source

OpenAI's Python SDK for building multi-agent workflows; v0.23.0/0.23.1 released Oct 1-2.

C

CAMEL

frameworksOpen source

CAMEL, one of the first multi-agent frameworks, for building role-playing agents and large agent societies.

D

DeepCode

codingOpen source

Open agentic coding system that turns papers and specs into code with multi-agent orchestration.

E

Eigent

personal agentsOpen source

Open-source cowork desktop app that runs multi-agent workflows locally.

M

Microsoft Agent Framework

frameworksOpen source

Microsoft's framework for building and orchestrating agents and multi-agent workflows in Python and .NET.

O

Oh My OpenCode Slim

codingOpen source

Lean multi-agent suite for OpenCode that mixes models and delegates tasks automatically.

S

Swarms

frameworksOpen source + cloud

Enterprise multi-agent orchestration framework.

A

AG2

frameworksOpen source

AG2, the community continuation of AutoGen, an open-source framework for multi-agent systems.

L

Langroid

frameworksOpen source

Python framework for multi-agent programming with LLMs.

L

LazyLLM

frameworksOpen source

Low-code framework for building multi-agent LLM applications.

O

OpenSwarm

browser/computer useSee site

AI-first 'operating system' where swarms of agents run apps and browsers in parallel.

M

MetaGPT

frameworksOpen source

Multi-agent framework that assigns roles like product manager and engineer to LLM agents to build software.

O

Oh My Claudecode

codingOpen source

Multi-agent orchestration layer for Claude Code that coordinates teams of specialized agents.

O

Orkes

frameworksOpen source + cloud

Orchestration platform built on Conductor for durable workflows and AI agents.

H

Haystack

frameworksOpen source + cloud

Open-source orchestration framework for building production LLM apps, RAG and agents.

P

Paseo

codingOpen source

Orchestrate multiple coding agents from desktop and mobile.

S

Superset

codingOpen source

Agentic IDE for orchestrating many coding agents in parallel.

A

Agent Orchestrator

codingOpen source

Runs and supervises teams of coding agents from planning to merge.

A

Aden Hive

frameworksOpen source

Multi-agent harness for production AI.

O

Omnigent

frameworksOpen source

Open-source agent framework and meta-harness that orchestrates Claude Code, Codex, Cursor and other agents together.

P

PraisonAI

frameworksOpen source

Multi-agent framework for building a self-improving AI workforce with little code.

S

SuperPlane

codingOpen source

Open-source platform for orchestrating one-shot engineering work with agents.

F

Flyte

frameworksOpen source + cloud

Type-safe orchestration for agents, ML pipelines and inference on Kubernetes.

O

Open Multi-Agent

frameworksOpen source

Self-hosted TypeScript agent runtime with durable approvals and verifiable run records.

A

Archestra

MCP & infraOpen source + cloud

Enterprise AI platform with guardrails, an MCP registry, gateway and orchestrator.

D

Dagu

frameworksOpen source

Self-hostable workflow orchestrator with a simple definition format and web UI, usable for agent jobs.

M

Maestro

codingOpen source

Command center for orchestrating multiple coding agents.

R

Ralph Orchestrator

codingOpen source

Orchestrator for autonomous agent loops using the Ralph Wiggum technique.

B

BotSharp

frameworksOpen source

Multi-agent framework for .NET.

C

Crewdle

business agentsUsage-based

Hire autonomous agents and teams for support, sales, bookkeeping and research, paid per task.

I

Inworld

voiceUsage-based

Platform and runtime for real-time voice AI and interactive characters, including text-to-speech and agent orchestration for consumer apps.