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 wins this matchup. Porkbun is our overall Developer Tools pick. Jotai is our free Developer Tools pick. 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:
- • You want open-source AI framework
- • You want typeScript-native design
LlamaIndex
Data framework for LLM applications
Best for you if:
- • You want great for RAG
- • You want easy data integration
| At a Glance | Mastra | LlamaIndex |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Developer Tools | Developer Tools |
Rating | - | - |
Free plan | Yes | Yes |
Choose Mastra or LlamaIndex?
Choose Mastra if
Build AI-powered applications and agents with a modern TypeScript stack.
- You want open-source AI framework
- You want typeScript-native design
Choose LlamaIndex if
Data framework for LLM applications
- You want great for RAG
- You want easy data integration
| 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.
Mastra's pricing is extremely generous, offering a full 'Open Source' tier completely free.
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
LlamaIndex offers a very generous open-source tier, providing a full LLM framework and RAG capabilities for free.
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 wins this matchup. Porkbun is our overall Developer Tools pick. Jotai is our free Developer Tools 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.