# Best free Mastra alternatives

9 free alternatives to Mastra and 0 more. Mastra is free.

## Alternatives

- [LangGraph](https://aitools.flocci.in/tool/langgraph) — Free — Build stateful, multi-agent apps as graphs
- [OpenAI Agents SDK](https://aitools.flocci.in/tool/openai-agents-sdk) — Free — Lightweight agent orchestration from OpenAI
- [Microsoft AutoGen](https://aitools.flocci.in/tool/microsoft-autogen) — Free — Multi-agent conversation framework
- [Google Agent Development Kit (ADK)](https://aitools.flocci.in/tool/google-agent-development-kit-adk) — Free — Open-source Python/Java framework from Google for building multi-agent systems
- [Pydantic AI](https://aitools.flocci.in/tool/pydantic-ai) — Free — Type-safe Python agent framework from the Pydantic team, validated structured outputs
- [Agno](https://aitools.flocci.in/tool/agno) — Free — Open-source (Apache-2.0) Python framework, 41.7k GitHub stars
- [smolagents](https://aitools.flocci.in/tool/smolagents) — Free — Extremely minimal open-source library (~1,000 lines) from Hugging Face
- [AWS Strands Agents](https://aitools.flocci.in/tool/aws-strands-agents) — Free — Open-source (6,800+ stars) Python and TypeScript SDK from AWS
- [DSPy](https://aitools.flocci.in/tool/dspy) — Free — Open-source (MIT) framework from Stanford NLP, 37k+ GitHub stars

## FAQ

### What is the best free alternative to Mastra?

LangGraph is the closest free alternative to Mastra: same Agent Frameworks (Developers) sub-category, and it is free. Build stateful, multi-agent apps as graphs

### Are there free Mastra alternatives?

Yes — 9 of the 9 alternatives listed here are free or freemium: LangGraph, OpenAI Agents SDK, Microsoft AutoGen, Google Agent Development Kit (ADK), Pydantic AI. None of them are paid-only.

### Is Mastra free?

Mastra is free. There is no paid plan attached to it in the catalog.

### How were these Mastra alternatives chosen?

They are the other tools in Agent Frameworks (Developers), then the rest of AI Agents & Automation, ordered free tiers first and capped at 9. There is no sponsorship and no paid placement in that ordering — only the pricing tier decides.

## Related

- [Mastra](https://aitools.flocci.in/tool/mastra)
- [Agent Frameworks (Developers)](https://aitools.flocci.in/category/ai-agents-automation/agent-frameworks-developers)
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Source: Flocci AI Tools — https://aitools.flocci.in/alternatives/mastra

Facts last verified: October 2026