LangChain vs Mastra: Pricing and Ratings Compared (2026)
Entry prices and free plans as read on each vendor's pricing page, and user ratings as published on review sites, for LangChain and Mastra side by side. This page compares data; it is not a hands-on review.
On the data: On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
Short on time? Here's the quick answer
Based on published vendor pricing and features and on public review data, here's who should pick what:
LangChain
Build LLM-powered applications
Best for you if:
- • You want to build LLM-powered applications
Mastra
Build AI-powered applications and agents with a modern TypeScript stack.
Best for you if:
- • You want to build AI-powered applications and agents with a modern TypeScript stack
| At a Glance | LangChain | Mastra |
|---|---|---|
Starts at | Free plan, paid from $39/mo, billed monthly Plus plan | Free plan |
Category | AI Agents Developer Tools | AI Agents Developer Tools |
Rating | 4.6/5 G2 4.5 · SourceForge 5.0 127 reviews | n/a |
Free plan | Yes | Yes |
Watch out for | Potential overage fees for traces | n/a |
Choose LangChain or Mastra?
Choose LangChain if
- You want to build LLM-powered applications
Choose Mastra if
- You want to build AI-powered applications and agents with a modern TypeScript stack
In-Depth Analysis
LangChain
Build LLM-powered applications
LangChain's pricing is quite generous, especially with a robust free Developer tier offering 5,000 traces/month.
Watch out
Potential overage fees for traces
Strengths
- Pro: Great for AI apps
- Pro: Active development
- Pro: Large community
Weaknesses
- Con: Fast changing API
- Con: Can be complex
Key features
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
- Pro: Open-source AI framework
- Pro: TypeScript-native design
- Pro: Good for AI workflows
- Pro: Active development
Weaknesses
- Con: Requires developer knowledge
- Con: Documentation still evolving
- Con: Smaller community than alternatives
Key features
Plans and prices: LangChain vs Mastra
| Tool | Plans and prices | Source |
|---|---|---|
| LangChain |
| langchain.com/pricing read Oct 2, 2026 |
| Mastra |
| github.com/pricing read Oct 30, 2026 |
Prices as read on each vendor's own pricing page on the date shown. Plans are listed per tool and are not matched against the other tool's plans: a plan name or price in one column says nothing about the same row in the other. Details on LangChain pricing and Mastra pricing.
Key Takeaways
LangChain
- Choose LangChain if you want to build LLM-powered applications
Mastra
- Choose Mastra if you want to build AI-powered applications and agents with a modern TypeScript stack
What the data shows
On the data below the two are close or not directly comparable, so we do not name a winner for this pair.
- Only LangChain has a published user rating (4.6/5 from 127 reviews); Mastra has none we can show.
- LangChain starts at $39/mo, billed monthly; Mastra has no public paid plan price on file.
- Both have a free plan.
Criteria: user rating (only above 20 reviews on both sides, gap of 0.2 or more), entry price (only on the same billing basis), free plan. How we rate
Frequently Asked Questions
How do LangChain and Mastra compare in 2026?
On the data below the two are close or not directly comparable, so we do not name a winner for this pair. Only LangChain has a published user rating (4.6/5 from 127 reviews); Mastra has none we can show. LangChain starts at $39/mo, billed monthly; Mastra has no public paid plan price on file. Both have a free plan.
What are LangChain and Mastra used for?
LangChain: Build LLM-powered applications. Mastra: Build AI-powered applications and agents with a modern TypeScript stack.
What does LangChain cost vs Mastra?
LangChain's cheapest paid plan is Plus at $39/mo, billed monthly; it also has a free plan. Mastra has no public paid-plan price on file. Prices read on the vendors' pricing pages, latest check Oct 30, 2026.
What's the main difference between LangChain and Mastra?
LangChain's main strength: great for AI apps. Mastra's main strength: open-source AI framework.
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