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Best OpenAI Agents SDK Alternatives

118 frameworks you can use instead of OpenAI Agents SDK. Ranked by popularity, tag overlap, and live GitHub signals.

openaimulti-agenttool-useguardrailstracingpython
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OpenAI Agents SDK

Reference

OpenAI's official Python SDK for building multi-agent systems — 19K+ stars

26.7Ktoday274
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Top Alternatives to OpenAI Agents SDK

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Agno

Build, run, and manage agentic software at scale with 38K+ stars

OSSFree
Agno AGI
40.4Ktoday436
4 shared tags
G

Google Agent Development Kit

Google's official framework for building AI agents — 18K+ stars

OSSFree
Google
19.9K3d ago276
4 shared tags
A

Agency Swarm

Open-source framework for orchestrating role-based AI agent swarms with Python

OSSFree
VRSEN
4 shared tags
I

IronEngine

Unified orchestration platform with multi-phase planning, 24-category tools, and adaptive model switching

OSSFree
Independent Research
4 shared tags
O

Orchard

Microsoft's framework for training autonomous agents with planning, reasoning, and tool use

OSSFree
Microsoft Research
4 shared tags
T

ToolRosetta

Automated tool standardization framework bridging open-source repos with LLM agents via MCP

OSSFree
Research (Shimin Di et al.)
4 shared tags
M

Microsoft Agent Framework

Unified multi-agent framework merging AutoGen and Semantic Kernel

OSSFree
Microsoft
58.4K800.0K/w5w ago445
3 shared tags
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Langflow

Visual framework for building and deploying AI agents — 145K+ stars

OSSFree
Langflow AI
148.8Ktoday323
3 shared tags
M

MetaGPT

Multi-agent framework — the first AI software company — 65K+ stars

OSSFree
FoundationAgents
68.3K17w ago116
3 shared tags
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LangGraph

LangChain's framework for building stateful agent graphs — 26K+ stars

OSSFree
LangChain
33.0Ktoday274
3 shared tags
S

Semantic Kernel

Microsoft's SDK for integrating LLMs into applications — 24K+ stars

OSSFree
Microsoft
28.0Ktoday394
3 shared tags
A

Anthropic Agent SDK

Claude-native agent framework with built-in MCP and tool use — 4.6K stars

OSSFree
Anthropic
3.5K2.5M/w3d ago56
3 shared tags

Compare directly

OpenAI Agents SDK vs AgnoOpenAI Agents SDK vs Google Agent Development KitOpenAI Agents SDK vs Agency SwarmOpenAI Agents SDK vs IronEngine