Laguna XS 2.1 is the compact member of Poolside's open-weight Laguna family, a mixture-of-experts design with 33B total and 3B active parameters released in July 2026. Like its larger sibling Laguna S, it is trained from scratch for software engineering and post-trained with reinforcement learning from code execution feedback, with native reasoning togglable per request. The small active-parameter count keeps latency low, and the model is deliberately sized to run locally on a single GPU, part of Poolside's design brief for it. It suits high-volume coding agent workloads, fast edit-and-verify loops, and cost-sensitive automation where a frontier-scale model is more than the task needs.
Call Poolside Laguna XS 2.1 on Opper with the OpenAI SDK. Sign up without a credit card. Get started
Poolside Laguna XS 2.1 runs on 1 route through the Opper gateway. Compare residency, zero data retention and training posture at a glance, with full data-handling detail per route below.
| Provider | Region | Zero data retention | Training | Input | Output | Cache read |
|---|---|---|---|---|---|---|
| Multi | No | — | — | Input price |
Each route hosting Poolside Laguna XS 2.1 has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.
Zero data retention with abuse monitoring: prompts and outputs are kept for abuse monitoring only, for a window the provider does not state, and are not used for training. No training on customer data. GLOBAL; SCCs; DPA available.
Call Poolside Laguna XS 2.1 through the Opper gateway with one API key. Opper is drop-in compatible with the OpenAI, Anthropic and Google AI SDKs.
Poolside Laguna XS 2.1 is a free model on Opper. Sign up needs no credit card: you get an API key straight away and the free models work in the playground and the API. Add a card to use premium models, pay-as-you-go with no minimum.
Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up Opper for you.
import OpenAI from "openai";const client = new OpenAI({apiKey: process.env.OPPER_API_KEY,baseURL: "https://api.opper.ai/v3/compat",});const completion = await client.chat.completions.create({model: "poolside/laguna-xs-2.1",messages: [{ role: "user", content: "Hello" }],});console.log(completion.choices[0].message.content);
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