Smarter AI, instantly.

Langoustine upgrades agents with memory.

Minimal integration.

Continue using the official OpenAI SDK — just change the base URL and add two headers.

const client = new OpenAI({

  baseUrl: "https://api.langoustine.dev/v1",

  defaultHeaders: {

    "X-Langoustine-API-Key": "XXXX",

    "X-Langoustine-User-Id": "XXXX",

});

Stateful memory.

Langoustine extracts and remembers key facts from conversations, boosting response quality and personalization.

Hello

Hi Sam, how can I assist you today?

Richer context.

Facts are automatically injected, making AI replies more natural and context-aware.

Got a sci-fi rec?

You liked character-driven, slow-burn stories—try The Long Way to a Small, Angry Planet.

Oh right, forgot I told you that. Nice!

I’ve got you. Want me to save this title for later too?

Works wherever you do.

Langoustine runs on any OpenAI-compatible API — including OpenRouter, Anthropic, and Google Cloud AI.
It also plays nicely with observability tools, Vercel’s AI SDK, and more.

const client = new OpenAI({

  baseUrl: "https://api.langoustine.dev/v1",

  defaultHeaders: {

    "X-Langoustine-API-Key": "XXXX",

    "X-Langoustine-User-Id": "XXXX",

    "X-Langoustine-Original-Base-URL":

      "https://openrouter.ai/api/v1",

});

Simple Integration for Developers

Switch to Langoustine in minutes. Just update your base URL and include two extra headers—no refactoring or new dependencies. You keep the workflow and ecosystem you know, now supercharged with memory.