1
Autonomous generalist AI agent that executes tasks end-to-end.
Why as an alternative to Mastra: free tier to test, paid at 18 €/month for regular use.
The top 5
The best alternatives to Mastra
2
Cognition's autonomous software engineer.
Why as an alternative to Mastra: paid at 20 €/month from the start, no meaningful trial.
3
AgentQLFreemium · Pay as you go
Query language for extracting web data for agents.
Why as an alternative to Mastra: free tier to test, paid at Pay as you go for regular use.
4
Anchor BrowserFreemium · Pay as you go
Isolated cloud browser for AI agents, security focused.
Why as an alternative to Mastra: free tier to test, paid at Pay as you go for regular use.
5
AutoGPTFreemium · Free (open source)
Pioneer of autonomous agents, now a platform.
Why as an alternative to Mastra: free tier to test, paid at Free (open source) for regular use.
Summary table
At-a-glance table
| Tool | Price | Model | Joute score |
|---|---|---|---|
| Mastra (reference) | Free (open source) | Free | -- |
| Manus | 18 €/month | Freemium | 7.9 |
| Devin | 20 €/month | Paid | 7.4 |
| AgentQL | Pay as you go | Freemium | -- |
| Anchor Browser | Pay as you go | Freemium | -- |
| AutoGPT | Free (open source) | Freemium | -- |
Also worth knowing
Other alternatives in the same category
34 additional AI Agents tools worth knowing. Less priority than the top 5, but useful depending on the case.
6
BotpressAI AgentsAI chatbot builder with built-in LLM, open source friendly.—Score7
Browser UseAI AgentsOpen source framework for browser agents, 2025 leader.—Score8
BrowserbaseAI AgentsCloud headless browser for AI agents, production infrastructure.—Score9
CassidyAI AgentsEnterprise AI assistant hub on top of your internal tools.—Score10
CognosysAI AgentsWeb AI agent that runs research and tasks autonomously.—Score11
ConvergenceAI AgentsProxy, a generalist agent that automates on your computer.—Score12
CosineAI AgentsGenie, an autonomous engineer agent for resolving GitHub tickets.—Score13
CrewAIAI AgentsOpen source framework for orchestrating AI agent teams.—Score14
DustAI AgentsAI agent platform for teams, plugged into your tools.—Score15
GensparkAI AgentsSuper-agent combining search, agents, and 80+ tools.—Score16
HyperbrowserAI AgentsCloud browser infrastructure for AI agents and scraping.—Score17
ImbueAI AgentsGeneralist agents lab, focused on reasoning and code.—Score18
InkeepAI AgentsAI assistant for developer support and documentation.—Score19
LangGraphAI AgentsStateful AI agent framework, by LangChain.—Score20
LettaAI AgentsStateful AI agent platform, formerly MemGPT, long-term memory focus.—Score21
LindyAI AgentsBuild AI assistants that automate your recurring tasks.—Score22
LutraAI AgentsAutomation agent integrated with Google Workspace apps.—Score23
MagnitudeAI AgentsOpen source framework for reliable browser agents.—Score24
MindStudioAI AgentsNo-code for building custom AI agents as a team.—Score25
Multi-onAI AgentsAgent that acts for you directly in the browser.—Score26
OpenAI OperatorAI AgentsOpenAI's browser agent, reserved for Pro subscribers.—Score27
OttogridAI AgentsResearch agents that fill data tables.—Score28
PhidataAI AgentsPython framework for AI agents with memory and tools.—Score29
Pydantic AIAI AgentsTyped AI agent framework, by the Pydantic team.—Score30
Reflection AIAI AgentsAI agents for autonomous software engineering.—Score31
Relevance AIAI AgentsLow-code platform for AI agents and workflows.—Score32
Sema4AI AgentsOpen source enterprise AI agent platform, formerly Robocorp.—Score33
SkyvernAI AgentsAgent that automates workflows directly in the browser.—Score34
Smyth OSAI AgentsVisual AI agent builder with drag and drop.—Score35
StagehandAI AgentsBrowserbase SDK for browser agents in TypeScript.—Score36
Steel BrowserAI AgentsOpen source browser for agents, self-hostable alternative.—Score37
SuperAGIAI AgentsOpen source platform to build and deploy agents.—Score38
VoiceflowAI AgentsNo-code platform for multi-channel conversational agents.—Score39
WordwareAI AgentsPrompt-as-code platform for building versioned AI flows.—Score
Frequently asked
Everything to know before switching
What is the best alternative to Mastra in 2026?
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Manus tops our ranking among the 39 alternatives identified in the AI Agents category. Joute score: 7.9/10. The verdict shifts based on your profile and budget: we detail the top 5 above.
Is there a free alternative to Mastra?
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Yes, Pydantic AI is a real free alternative, typed ai agent framework, by the pydantic team. Several other tools in the category offer a freemium tier.
Is Mastra really the best in its category?
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Mastra hasn't been fully tested by Joute yet. The ranking above is based on alternative scores -- use it as guidance, not a final verdict.
Why look for an alternative to Mastra?
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Three common reasons: the price gets too high, the tool no longer covers a refined use case, or you want to de-risk your stack. The AI Agents category is well-stocked in 2026 to find better or cheaper.