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Motörhead Memory

Motörhead is a memory server implemented in Rust. It automatically handles incremental summarization in the background and allows for stateless applications.


See instructions at Motörhead for running the server locally, or to get API keys for the hosted version.


npm install @langchain/openai
import { ChatOpenAI } from "@langchain/openai";
import { ConversationChain } from "langchain/chains";
import { MotorheadMemory } from "@langchain/community/memory/motorhead_memory";

// Managed Example (visit to get your keys)
// const managedMemory = new MotorheadMemory({
// memoryKey: "chat_history",
// sessionId: "test",
// apiKey: "MY_API_KEY",
// clientId: "MY_CLIENT_ID",
// });

// Self Hosted Example
const memory = new MotorheadMemory({
memoryKey: "chat_history",
sessionId: "test",
url: "localhost:8080", // Required for self hosted

const model = new ChatOpenAI({
model: "gpt-3.5-turbo",
temperature: 0,

const chain = new ConversationChain({ llm: model, memory });

const res1 = await chain.invoke({ input: "Hi! I'm Jim." });
console.log({ res1 });
res1: {
text: "Hello Jim! It's nice to meet you. My name is AI. How may I assist you today?"

const res2 = await chain.invoke({ input: "What did I just say my name was?" });
console.log({ res2 });

res1: {
text: "You said your name was Jim."

API Reference:

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