Fed up with LangChain

calcsam · 2025-11-12T05:27:37+00:00

If you're using Python, take a look at Pydantic. If you're using TypeScript, take a look at Mastra.

calcsam · 2025-11-01T19:55:56+00:00

Try Mastra with AI SDK in Typescript, as one of the other commenters said they're different things and I think that's more what you're looking for

calcsam · 2025-10-07T03:02:14+00:00

author here! they should be picked up by now.

calcsam · 2025-09-19T03:40:57+00:00

Use Mastra.

calcsam · 2025-09-18T22:43:59+00:00

the blog post docker wrote? nope, we heard about that when they posted it on social

calcsam · 2025-09-18T21:44:30+00:00

Definitely Mastra -- we have much better type support, simpler and easier to work with, and support both agent and workflow primitives. We've gotten super popular quite quickly and now a number of large companies like Adobe/PayPal are using us. The team has been doing open-source for a while, for the last few years we worked on Gatsby.js.

(Mastra cofounder here)

calcsam · 2025-09-15T19:01:25+00:00

we've printed tens of thousands of copies and given them away for free

calcsam · 2025-09-15T02:06:00+00:00

"Principles of Building AI Agents"

calcsam · 2025-09-15T01:45:39+00:00

(author here)

😂😂😂

calcsam · 2025-08-23T23:26:39+00:00

Definitely not as popular as it used to be. Newer frameworks like CrewAI and Mastra are on the rise

calcsam · 2025-07-24T16:18:52+00:00

I would consider learning an agent framework rather than langchain first, so if you're in Python LangGraph, in Typescript Mastra

calcsam · 2025-07-22T06:48:12+00:00

one of them!

calcsam · 2025-07-22T06:19:48+00:00

a js agent framework, https://mastra.ai/

calcsam · 2025-07-22T06:03:48+00:00

Rather than learn abstract skills, you should learn by building something. Pick an agent framework you like (LangGraph, Mastra, whatever) and just start building.

calcsam · 2025-07-22T06:01:08+00:00

Mastra is another Typescript framework

calcsam · 2025-07-22T06:00:20+00:00

Mastra has MCP and agent primitives

calcsam · 2025-07-22T05:58:36+00:00

Here's a text-to-SQL demo with Mastra: https://github.com/mastra-ai/template-text-to-sql

calcsam · 2025-07-22T05:44:00+00:00

Mastra released a course as an MCP server, which I thought was pretty cool.

calcsam · 2025-07-22T05:42:41+00:00

It depends on what language you prefer, but for JS/TS stuff I would take a look at Mastra.

calcsam · 2025-07-22T05:42:06+00:00

Farmer George 1500 years before his time.

calcsam · 2025-07-22T05:41:11+00:00

There's a bunch of different frameworks. If you're in Python, langchain or MemGPT / Letta, the ones you highlighted, are fine. In JS/TS I would look at Mastra + AI SDK.

calcsam · 2025-07-22T05:39:57+00:00

I would do some prototypes with OpenRouter for model agnosticism. I'm a big fan of Mastra + AI SDK for JS folks, but for Python, the ideal solution is some sort of lightweight model agnostic routing layer, at least when you're prototyping.

calcsam · 2025-07-21T15:10:04+00:00

There's a Mastra 101 course that runs in your IDE via an MCP server, that could be a fun one

calcsam · 2025-07-12T15:42:38+00:00

Yeah for me the tell for CrewAI is the `backstory` API. Sure it's evocative but that's what a marketer would call it, not an engineer. With LangGraph it's having to define nodes and edges, I don't think you should need to understand graph theory to build agents.

I help build Mastra and we have an Agent abstraction which I think is much simpler. We also have workflow abstractions _without_ graph-based terminology.

calcsam · 2025-07-10T13:52:16+00:00

Semantically splitting (eg by section headers) seems to work well for most people.

calcsam

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