LangGraph

What it is for

LangGraph is an agent graph: you draw _start_ → agent → _end_ / tools in LangGraph Studio, submit Messages, and watch a send_email tool call, and the library is $0 (MIT). Use it when the job is a graph you run at a public $, not when you need a $20 chat seat.

Soft-note: OSS $0 + LangSmith seats (Developer $0/seat with 5k traces; Plus $39/seat). Distinct from CrewAI, LlamaIndex, Haystack, and Langfuse.

What makes it unique: the cover is LangChain’s official LangGraph Studio desk (LangGraph Studio / agent, Graph / Chat, Memory / Interrupts, nodes _start_ / agent / _end_ / tools, Input Messages Submit, thread HUMAN / AI send_email) from the LangGraph Studio still — not a wordmark. The send_email card itself is ops of the graph.

Key features

• Graph canvas — _start_ / agent / _end_ / tools (cover still; langgraph). One desk. Cover agent sits here.
• Studio chrome — LangGraph Studio / agent plus Graph / Chat (cover). A studio, not a $39 meter.
• Memory / Interrupts — the two graph toggles (cover). Controls, not Plus.
• Input / Messages — + Message, Remaining Steps, Submit (cover). A form, not Developer.
• Thread — HUMAN reminder + AI send_email (to / subject / body) (cover). A trace, not Enterprise.
• OSS package — pip / npm from langchain-ai/langgraph. A library, not a seat.

Submit on the cover is a CTA (not a sixth desk). Developer / Plus / LSU tiles stay in Pricing. Studio AI extras stay off Key features.

Who it's for

Best fit: engineers who will stay on OSS + LangSmith Developer at $0/seat (5k traces) while they open a first _start_ → agent graph, then Plus at $39/seat when they need 10k traces and extra seats — not Enterprise first unless they need SSO / ABAC.

Pricing

Verified 2026-10-23 (Asia/Shanghai) from langchain.com/pricing + the MIT repo. Soft-note: library is $0; LangSmith is seats + traces.

• LangGraph (OSS) — $0. MIT on langchain-ai/langgraph.
• LangSmith Developer — $0 / seat / month then pay-as-you-go. 1 seat. Up to 5k base traces / month. 7 LSUs / org / month included.
• LangSmith Plus — $39 / seat / month then pay-as-you-go. Unlimited seats. Up to 10k base traces / month. 1 free small serverless deployment. 37 LSUs / org / month included.
• Enterprise — Custom. SSO, ABAC / RBAC, support SLA. Do not invent a $.
• LSU — $1.00 / LSU. Page: “1 LSU = $1.”

Confirm checkout; traces bill in arrears.

Limitations / costs

• Studio + traces are LangSmith. The MIT graph does not include Plus seats.
• A graph runtime, not CrewAI’s Studio canvas. For that canvas see CrewAI.
• Plus LSUs are extra after the included 37.

Alternatives

• CrewAI — MIT crews + Studio when you want Cloud Basic Free (50 executions), not _start_ / agent / tools.
• LlamaIndex — a data/agent framework when you want that stack, not LangGraph Studio.
• Haystack — Apache-2.0 pipelines when you want Studio $0 / 100 hours, not LangSmith $39/seat.
• Langfuse — traces when you want that OSS/hosted desk, not a graph editor.

Official tutorial

Official LangChain channel video: LangChain Academy New Course: Introduction to LangGraph (oEmbed author: LangChain). First-party course intro; the Studio graph still is the cover. Academy modules on the video are ops of the graph, not generate-on-send_email. We searched @LangChain — that handle is the product channel.

Written path: langchain.com/pricing plus LangGraph and the quickstart.

Website

https://www.langchain.com/langgraph

Source

Catalog row curated for AI Tools Nav. Cover is LangChain’s official LangGraph Studio still (_start_ / agent / _end_ / tools + send_email). Dollars checked on langchain.com/pricing (OSS $0; Developer $0/seat / 5k traces; Plus $39/seat / 10k traces; 1 LSU = $1). Tutorial oEmbed author: LangChain (@LangChain).

Last verified

2026-10-23 (Asia/Shanghai) editorial check.