---
title: "LangChain vs Mastra: Which is Better in 2026? | App Stack Builder"
description: "LangChain vs Mastra compared for 2026 — pricing, free tiers, features, pros & cons. See which agent framework tool is the better fit for your startup."
source: https://appstackbuilder.com/compare/langchain-vs-mastra
retrieved: 2026-09-12
---

Agent Framework

# LangChain vs Mastra: Which is Better in 2026?

Choosing between [LangChain](https://appstackbuilder.com/tools/langchain) and [Mastra](https://appstackbuilder.com/tools/mastra)? Both are popular agent framework tools. Below we compare them on pricing, free tiers, features, and pros & cons so you can pick the right fit for your stack.

Quick verdict

Both LangChain and Mastra are strong agent framework choices. The right pick comes down to your specific feature needs, existing stack, and team preferences.

## LangChain vs Mastra — Side by Side

|                | LangChain                 | Mastra                    |
| -------------- | ------------------------- | ------------------------- |
| Category       | Agent Framework           | Agent Framework           |
| Pricing        | Free · paid from $39/mo   | Free                      |
| Starting price | Free tier available       | Free tier available       |
| Free tier      | ✓                         | ✓                         |
| Rating         | 4.5                       | 4.6                       |
| Best for       | Agent Framework — ai, llm | Agent Framework — ai, llm |

## Pros & Cons

![LangChain](https://www.google.com/s2/favicons?domain=langchain.com&sz=128)

[LangChain](https://appstackbuilder.com/tools/langchain)

* ✓Largest ecosystem & integrations
* ✓Free open-source core
* ✓Python and TypeScript
* ✓LangSmith for observability
* ✗Abstractions can feel heavy
* ✗Fast-moving API surface

![Mastra](https://www.google.com/s2/favicons?domain=mastra.ai&sz=128)

[Mastra](https://appstackbuilder.com/tools/mastra)

* ✓Best-in-class for TypeScript teams
* ✓Batteries-included (agents, workflows, memory, evals)
* ✓From the experienced Gatsby team
* ✓Strong observability & MCP support
* ✗Younger than Python frameworks
* ✗TypeScript-only ecosystem

## Key Features Compared

### LangChain

* ✓Free open-source framework
* ✓Python & JS/TS
* ✓Huge integration ecosystem
* ✓Chains, tools, memory, RAG

### Mastra

* ✓TypeScript-native agents & workflows
* ✓Memory & semantic recall
* ✓Evals & observability
* ✓MCP tool sharing
* ✓3,300+ models via providers

### Choose LangChain if…

* ✓You want a free tier to validate before paying.
* ✓Largest ecosystem & integrations
* ✓Free open-source core
* ✓Python and TypeScript
[LangChain review & pricing ](https://appstackbuilder.com/tools/langchain)

### Choose Mastra if…

* ✓You want a free tier to validate before paying.
* ✓Best-in-class for TypeScript teams
* ✓Batteries-included (agents, workflows, memory, evals)
* ✓From the experienced Gatsby team
[Mastra review & pricing ](https://appstackbuilder.com/tools/mastra)

## Frequently Asked Questions

Is LangChain better than Mastra?⌄

Both LangChain and Mastra are strong agent framework choices. The right pick comes down to your specific feature needs, existing stack, and team preferences.

What is the difference between LangChain and Mastra?⌄

LangChain — The most popular open-source framework for building LLM apps and agents, with LangSmith for observability. Mastra — Open-source TypeScript agent framework from the Gatsby team — agents, workflows, memory, and observability in one modern stack. Both are agent framework tools; the comparison table above breaks down pricing, free tiers, and what each is best for.

LangChain vs Mastra: which is cheaper?⌄

LangChain pricing: Free · paid from $39/mo. Mastra pricing: Free. Confirm current pricing on each tool's official site, as plans change.

Which is rated higher, LangChain or Mastra?⌄

In our catalog, LangChain rates 4.5 out of 5 and Mastra rates 4.6 out of 5, so Mastra has a slight edge on reviews.

See more options in our guide to the [best agent framework tools for startups](https://appstackbuilder.com/categories/agent-framework).

## Still not sure which to pick?

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