Alternatives to OpenAI Agents SDK
30 tools that compete with or replace OpenAI Agents SDK. Ranked by direct product-type match — not generic category overlap.
Why people look for alternatives to OpenAI Agents SDK
The complaints that come up most often in public discussion — reviews, forums and community threads. Not our opinion, and not the vendor's marketing.
- Narrower than LangChain or AutoGen — no sprawling integration catalog when you need exotic connectors
- Documentation is largely OpenAI-authored, so community troubleshooting resources are thinner than competitors'
- Optional extras like voice and Redis sessions add dependency and setup complexity teams underestimate
- Sandbox provider abstraction is unclear — reviewers can't tell if you're locked into one per run
Drawn from 70 mentions across 4 sources · researched Sep 29, 2026.
In fairness: users also consistently praise lean, low-boilerplate orchestration compared with langchain and autogen, with far fewer abstractions to learn, and provider-agnostic via litellm across 100+ llms, so teams aren't locked into openai models. A complaint list is not a verdict — see the full picture on the OpenAI Agents SDK page.
AutoGen
AutoGen is Microsoft's open-source framework for building conversational and event-driven multi-agent AI apps in Python and .NET.
Microsoft Agent Framework
Microsoft Agent Framework is an open-source SDK for building agentic AI with workflows, checkpoints, and the GA Agent Harness runtime.
TaskWeaver
Microsoft's open-source, code-first Python framework for building stateful, data-intensive conversational AI agents.
MetaGPT
Open-source multi-agent framework that assigns PM, architect, engineer and QA roles to GPTs for structured software tasks
Mastra
Mastra is an open-source TypeScript agent framework for durable workflows, memory, and built-in agent observability.
Semantic Kernel
Microsoft's open-source SDK for building AI agents and copilots with plugins, memory, and multi-agent orchestration.
Pydantic AI
Pydantic AI is the typed, open-source Python agent framework that returns Pydantic-validated objects from every run.
Eino
Eino is an open-source Go LLM framework from ByteDance for building agents, graphs, and RAG pipelines in your existing Go backend.
LibreChat
LibreChat self-hosts multi-model AI chat, agents, and MCP tools on your own infrastructure for free.
CopilotKit
Open-source React framework for agent chat, generative UI, and shared state on any AG-UI backend.
ChatDev
ChatDev 2.0 (DevAll) is a free, Apache-2.0, zero-code platform for building multi-agent workflows from YAML or JSON config.
Google Agent Development Kit
Google Agent Development Kit (ADK) is the MIT-licensed open-source framework for building production AI agents with graph workflows in
SmolAgents
SmolAgents builds code-writing AI agents in Python — a ~1,000-line open-source library where agent actions are executable code.
AgentScope
AgentScope is an open-source Python framework from Alibaba for building distributed multi-agent AI systems.
Hermes Desktop
Hermes Desktop is a free, open-source desktop GUI for the Hermes Agent — a self-hosted AI agent with a built-in learning loop that turns
Anthropic Cybersecurity Skills
Open-source library of 817 structured cybersecurity skill files your AI coding agent loads on demand, mapped to MITRE ATT&CK and licensed Apache 2.0.
Zhipu GLM
Zhipu GLM is a full-stack large-model platform built on open GLM weights, with MaaS APIs, ZCode and shipped computer-use agents.
Future AGI
Agent evaluation platform that simulates voice and chat agents, traces production, and scores hallucinations before customers hit them
Imbue
Imbue builds inspectable coding-agent tools: mngr for parallel agent runs, Latchkey for HTTP permissions, and Studio as a personal AI OS.
Pipedream
Pipedream is the integration layer for AI agents: managed auth and 10,000+ tools across 3,000+ APIs.
Tessl
Agent enablement platform that versions, scans and evaluates the skills your coding agents run.
GitLab Duo
GitLab Duo adds policy-governed AI agents and flows across the DevSecOps lifecycle inside GitLab
DB-GPT
Open-source agentic AI data assistant that writes SQL, runs code in a sandbox, and chats with your databases self-hosted
Flowith
Flowith is an infinite canvas where you run many AI image, video, slide, and research agents side by side instead of one chat thread.
Capafy AI
Capafy AI is an agent skills marketplace where you buy, run, and publish ready-made AI agent skills priced per skill or per use.
Coder
Self-hosted cloud development environments and AI governance that let enterprises run coding agents on their own infrastructure.
Hermes-Agent
Hermes Agent: a self-hosted open-source AI agent with persistent memory that builds reusable skills across 20+ chat platforms.
Opensquilla
Token-efficient AI agent with SquillaRouter model routing that cuts agent token cost by sending simple steps to cheap models.
CowAgent
CowAgent is an open-source AI agent harness that plans tasks, runs tools, and grows long-term memory across sessions.
Paseo
Paseo is a self-hosted control plane for running Claude Code, Codex, Copilot and 30+ more coding agents from desktop, phone or a browser.
Frequently asked questions
What are the best alternatives to OpenAI Agents SDK?
We currently list 30 alternatives to OpenAI Agents SDK: AutoGen, Microsoft Agent Framework, TaskWeaver, MetaGPT, Mastra. Each is ranked by direct product-type match rather than generic category overlap.
How do you choose which OpenAI Agents SDK alternatives to show?
Alternatives are ranked by direct product-type match — tools that do the same job — not by shared category tags. Every listed tool is independently re-verified on a continuous cycle.