Best Alternatives to Mastra
Explore 18 top-rated alternatives to Mastra in the ai agents category. Compare features, pricing, and find the perfect fit for your needs.
About Mastra
TypeScript-native framework for building AI agents, workflows, and RAG pipelines — from the team behind Gatsby.js.
Free
Top Recommended Alternatives
CrewAI
AI Agents
From
FreeOpen-source Python framework for orchestrating role-playing, autonomous AI agents that collaborate as a 'crew' to complete complex tasks.
Key Strengths:
- ✓Most opinionated multi-agent framework — easy to read, easy to maintain
- ✓Free tier includes the full visual Studio editor and 50 executions/month
LangGraph
AI agent framework
From
FreeLangGraph is LangChain's open-source framework for building stateful, durable, multi-agent workflows in Python and JavaScript with graph-based control flow.
Key Strengths:
- ✓Open-source library is MIT-licensed and runs anywhere without platform lock-in
- ✓Native checkpointing makes durable, resumable, human-in-the-loop agents straightforward
OpenAI Agents SDK
AI Agent Builders
From
Free (API costs separate)OpenAI Agents SDK is an open-source Python framework for building agentic apps with handoffs, guardrails, sessions, tracing, MCP tools, sandbox agents, and realtime voice agents.
Key Strengths:
- ✓Uses only 3 primary primitives in the official docs: Agents, Agents as tools or Handoffs, and Guardrails, which keeps the framework easier to learn than heavier orchestration stacks.
- ✓Includes a built-in agent loop that handles tool invocation, sends tool results back to the LLM, and continues until the task is complete.
LlamaIndex
AI agent framework
From
FreeLlamaIndex is an open-source Python and TypeScript framework for building RAG, document workflows, and AI agents — with LlamaCloud for managed parsing, extraction, and indexing.
Key Strengths:
- ✓Best-in-class retrieval strategies: hybrid, parent-child, summary indexes, knowledge graphs
- ✓LlamaParse is the strongest PDF/document parser for enterprise RAG today
Pydantic AI
AI agent framework
From
FreePydantic AI is a Python GenAI agent framework from the Pydantic ecosystem, designed for typed, validated agent development alongside Pydantic and Logfire.
Key Strengths:
- ✓Built by the Pydantic team, which gives it first-party alignment with Pydantic validation and Python type-hinting patterns already used across many AI SDKs and frameworks.
- ✓Strong structured-output story: agent outputs can be declared as Pydantic models, validated at runtime, and typed for static checking in application code.
More AI Agents Alternatives
Agent Zero
Open-source, general-purpose AI agent framework that runs in a Docker sandbox and learns by writing its own tools.
Learn MoreAgentScope
Open-source multi-agent platform from Alibaba's DAMO Academy for building LLM agents with visual workflows and runtime management.
Learn MoreMicrosoft Foundry Agent Service
Microsoft's full managed platform for building, deploying, and scaling enterprise AI agents with native integration into Microsoft 365, Azure services, and 1,400+ business systems through code-first SDK and visual portal experiences
From $2.50 per 1M input tokens (GPT-4o); pay-per-use with no orchestration fee
Learn MoreGoose (by Block)
Open-source, extensible AI agent from Block that runs on your machine and orchestrates LLMs, MCP tools, and developer workflows.
Learn MoreComposio
Tool-calling infrastructure for AI agents — 1,000+ pre-built integrations with managed OAuth, exposed natively as MCP servers.
From Free (up to 20,000 tool calls/month)
Learn MoreCua
Cloud desktops for AI agents — give Claude Code, Codex or any computer-use agent its own isolated macOS or Linux VM.
Learn MoreDust
Dust review 2026: enterprise AI platform from Paris for building governed agents grounded in Slack, Drive, Notion — features, pricing, pros, cons.
Learn MoreHermes Agent
Open-source self-improving AI agent framework by Nous Research with persistent memory, 40+ tools, and 135K+ GitHub stars.
Learn MoreInngest
Durable-execution platform for AI workflows and agents — write step-functions in TypeScript or Python, get retries, scheduling and observability for free.
From Free
Learn MoreLangflow
Open-source visual editor (acquired by DataStax/IBM) for building, prototyping, and deploying agentic LLM workflows with hundreds of pre-built components.
From Free
Learn MoreManus
General-purpose autonomous AI agent that browses the web, runs code, and completes long-horizon tasks end-to-end.
Learn MoreSmithery
Smithery is the registry and hosted runtime for Model Context Protocol servers — discover, install and run MCP servers for Claude, Cursor, Windsurf and more.
Learn MoreToolhouse
Cloud platform for building, deploying, and scheduling persistent AI workers from chat — backed by hundreds of pre-built tools and full MCP support.
From Free
Learn MoreQuick Comparison
Why Consider Mastra Alternatives?
While Mastra is a popular choice in the ai agents category, exploring alternatives can help you find a tool that better matches your specific needs, budget, or workflow preferences.
Common reasons to explore alternatives include:
- Different pricing models or more affordable options
- Specific features that Mastra may not offer
- Better integration with your existing tools
- Performance or user experience preferences
- Regional availability or support requirements
Compare the tools above to find the best fit for your specific use case.
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