Mastra vs LlamaIndex: Which is Better in 2026?
Choosing between Mastra and LlamaIndex comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: LlamaIndex is our overall pick for developer tools workflows. Pick Mastra if you need a free tier to start with.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Mastra
Build AI-powered applications and agents with a modern TypeScript stack.
Best for you if:
- • Framework for building AI apps and agents with TypeScript.
- • Integrates with 40+ AI providers and supports autonomous agents and workflows.
LlamaIndex
Data framework for LLM applications
Best for you if:
- • Automates complex document processing with AI agents and advanced OCR.
- • Offers modular components for parsing, extraction, indexing, and workflow orchestration.
| At a Glance |  Mastra |  LlamaIndex |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Developer Tools | Developer Tools |
Rating | - | - |
Choose Mastra or LlamaIndex?
Choose Mastra if
Build AI-powered applications and agents with a modern TypeScript stack.
- Open-source AI framework
- TypeScript-native design
- Good for AI workflows
Choose LlamaIndex if
Data framework for LLM applications
- Great for RAG
- Easy data integration
- Good documentation
| Feature | Mastra | LlamaIndex |
|---|---|---|
| Pricing Model | Freemium | Freemium |
| User Rating | No ratings yet | No ratings yet |
| Categories | Developer ToolsAI Agents | Developer ToolsData & Databases |
In-Depth Analysis
Mastra
Build AI-powered applications and agents with a modern TypeScript stack.
Strengths
- +Open-source AI framework
- +TypeScript-native design
- +Good for AI workflows
- +Active development
Weaknesses
- -Requires developer knowledge
- -Documentation still evolving
- -Smaller community than alternatives
Key features
LlamaIndex
Data framework for LLM applications
Strengths
- +Great for RAG
- +Easy data integration
- +Good documentation
Weaknesses
- -Learning curve
- -Can be slow
Key features
Pricing: Mastra vs LlamaIndex
| Plan | Mastra | LlamaIndex |
|---|---|---|
| Tier 1 | Free Open Source | Free Open Source |
| Tier 2 | N/A | Custom LlamaCloud |
Pricing verified from each vendor's public pricing page. Compare in detail on Mastra pricing and LlamaIndex pricing.
Who Should Use What?
On a budget?
Both are freemium. Compare plans on their websites.
Go with: Mastra
Want the highest-rated option?
Neither has ratings yet.
Too early to call on ratings — compare on features and pricing.
Value user reviews?
Neither has ratings yet.
Too early to call — neither has ratings yet.
3 Questions to Help You Decide
What's your budget?
Both are freemium. Pricing won't help you decide here.
What's your use case?
Both are developer tools tools. Compare their specific features to decide.
How important are ratings?
Neither has ratings yet.
Key Takeaways
LlamaIndex
- Free tier available
- Our pick for this comparison
Mastra
- Choose if you want build AI-powered applications and agents with a modern TypeScript stack
The Bottom Line
LlamaIndex is our pick.
Frequently Asked Questions
Is Mastra or LlamaIndex better?
LlamaIndex is rated in our evaluation. Both are freemium.
What are Mastra and LlamaIndex used for?
Mastra: Build AI-powered applications and agents with a modern TypeScript stack.. LlamaIndex: Data framework for LLM applications.
What does Mastra cost vs LlamaIndex?
Mastra is freemium (free tier + paid plans). LlamaIndex is freemium (free tier + paid plans). Visit their websites for detailed pricing.