OpenAI Agents SDK alternatives
OpenAI Agents SDK by OpenAI costs Free (OSS) and is open source. If you need something cheaper, open source, self-hosted or simply different, here are 10 alternatives that do the same job, ranked by how widely they are used, with the differences that matter.
10 OpenAI Agents SDK alternatives, by popularity
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A framework for building LLM applications and agents from composable parts: model integrations, tools, retrievers and prebuilt agent abstractions. Available for Python and JavaScript.
- Works with local models
- More widely used (Gid Score 77 vs 54)
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A low-level orchestration framework for building stateful agents as graphs, with durable execution, persistence and human-in-the-loop steps. Available for Python and JavaScript.
- Works with local models
- More widely used (Gid Score 69 vs 54)
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Vercel's TypeScript toolkit for building AI applications and agents, with one API across model providers and UI helpers for streaming.
- Works with local models
- More widely used (Gid Score 67 vs 54)
- Growing fast: usage up 25% in 30 days
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An open-source SDK from AWS for building and controlling agents in Python and TypeScript.
- Works with local models
- More widely used (Gid Score 63 vs 54)
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Anthropic's SDK that exposes the agent loop, tools and context management behind Claude Code, for building custom agents in Python and TypeScript.
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A TypeScript framework for building agents and AI workflows, with memory, evals, retrieval and observability built in.
- Works with local models
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A batteries-included agent harness built on LangGraph, with planning, a virtual file system and sub-agents for long-running tasks.
- Works with local models
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A full-stack SDK for agent-native application frontends with chat UI, generative UI, shared state and human-in-the-loop for React, Angular, Vue, React Native and chat channels; the team maintains the AG-UI protocol.
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Cloudflare's SDK for building stateful agents that run on Workers and Durable Objects.
- Growing fast: usage up 28% in 30 days
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A framework for programming language models with declarative modules and optimizers instead of hand-written prompts.
- Works with local models
OpenAI Agents SDK vs alternatives at a glance
| Agent | Price | Free to start | Open source | MCP | Local models | Gid Score |
|---|---|---|---|---|---|---|
| OpenAI Agents SDK | Free (OSS) | ✓ | ✓ | ✓ | ? | 54 |
| LangChain | Free (OSS) | ✓ | ✓ | ✓ | ✓ | 77 |
| LangGraph | Free (OSS) | ✓ | ✓ | ✓ | ✓ | 69 |
| AI SDK | Free (OSS) | ✓ | ✓ | ✓ | ✓ | 67 |
| Strands Agents | Free (OSS) | ✓ | ✓ | ✓ | ✓ | 63 |
| Claude Agent SDK | Free (OSS) | ✓ | ✓ | ✓ | ? | 60 |
| Mastra | Free (OSS) | ✓ | ✓ | ✓ | ✓ | 59 |
| Deep Agents | Free (OSS) | ✓ | ✓ | ✓ | ✓ | 57 |
| CopilotKit | Free + $39/mo | ✓ | ✓ | ✓ | ? | 57 |
| Cloudflare Agents SDK | Free (OSS) | ✓ | ✓ | ✓ | ? | 56 |
| DSPy | Free (OSS) | ✓ | ✓ | ✓ | ✓ | 54 |
Prices from the vendors' pricing pages; features from official docs (“?” means not documented). Full feature comparison · All prices
How teams use these tools
Run LangChain's Open Deep Research multi-agent pipeline locally
LangChain's open-source deep research agent, built on LangGraph, runs research sub-agents in parallel, compresses what they find and writes a final report. It works with many mode…
On Deep Research Bench, the default GPT-4.1 configuration scored 0.4309 and the GPT-5 configuration 0.4943.
How Cornerstone OnDemand cut database diagnosis time with Strands Agents on Amazon Bedrock
Cornerstone OnDemand's three-person Enterprise DataOps team built Orion AI, a multi-agent system on Amazon Bedrock and Strands Agents, in six months. It speeds up database inciden…
As reported by AWS, database diagnosis time dropped from 45 minutes to 10 minutes, a 78% reduction.
Build a CI-health monitoring agent with the Claude Agent SDK and GitHub MCP
In this Anthropic cookbook notebook, an agent gets the official GitHub MCP server and is told to look over recent CI runs. It reports failing jobs, flaky patterns and recommended …
A status summary of recent CI runs and what triggered them.
FAQ
What is the best alternative to OpenAI Agents SDK?
By usage, the closest alternative is LangChain, followed by LangGraph, AI SDK, Strands Agents.
Is there a free alternative to OpenAI Agents SDK?
None of the closest alternatives has a free tier.
Is there an open-source alternative to OpenAI Agents SDK?
Not among the closest alternatives we track.
How do these OpenAI Agents SDK alternatives compare on price?
LangChain: Free (OSS); LangGraph: Free (OSS); AI SDK: Free (OSS); Strands Agents: Free (OSS); Claude Agent SDK: Free (OSS); Mastra: Free (OSS).
OpenAI Agents SDK: pricing, features and stats · All agent frameworks and SDKs · Find the right agent in 4 questions