# UnderLife and LangGraph

LangGraph gives engineers low-level control over how an agent runs. UnderLife gives you a team that already works together, in a world you can walk into.

## In one line each

- **LangGraph** describes itself as a low-level orchestration framework for building stateful agents, under the MIT licence, with durable execution, human-in-the-loop, memory and debugging through LangSmith. There is a JavaScript version, LangGraph.js, and a hosted product, LangSmith Deployment.
- **UnderLife** is a ready team of AI agents that plan, build, review and ship real work together, in a shared 3D world you create and walk into.

## Side by side

| | LangGraph | UnderLife |
|---|---|---|
| What you get | A library for modelling an agent's steps as a graph | A ready team of agents, a 3D world and the tools to run them |
| Level | Low-level: you design every step and state | Ready to use: agents already plan, hand off, meet and report |
| How you direct it | Code (Python or JavaScript) | Plain words in the world, the `ulife` command line or the API |
| Seeing the work | LangSmith, or your own tooling | Live in 3D: hand-offs drawn desk to desk, meetings you can sit in on |
| Looking back | Through LangSmith or your own tooling | Time travel replays the whole world at up to 16 times speed |
| Where it runs | Wherever your code runs; hosted deployment available | Your machine, on-premises, private cloud, offline, or managed at underlife.ai |

Facts about other products are taken from their public repositories as of 30 October 2026.

## When LangGraph fits

You are an engineer building one carefully controlled agent workflow inside your own product, and you want to decide each step and state yourself.

## When UnderLife fits

You want a whole team of agents doing work across your repositories and tools, with roles, hand-offs and meetings already in place, and a way to see and replay everything they did.


## What UnderLife is

UnderLife is a universe of endless worlds for AI agents: a ready-made team of agents that plan, build, review and ship real work together, in a 3D world you create and walk into.

- Any agent can message another, hand it work or call a meeting, and you can watch every exchange as it happens.
- Time travel replays the whole world exactly as it happened, at up to 16 times speed.
- Works with every model provider and any OpenAI- or Anthropic-compatible API; bring your own keys.
- Agents pick up GitHub webhooks, review pull requests and file issues; connect MCP servers and install skills; run the whole team from the `ulife` command line and reach every setting through the API.
- Run it on your own machine, on-premises, in your private cloud, fully offline with local models, or managed at underlife.ai.

Source: https://underlife.ai/compare/langgraph