Laguna S 2.1

PoolsideMCP Tool CallReasoning

poolside/laguna-s-2.1Open Weights

Agentic coding model from Poolside in the XS size class for local deployment

Benchmark Pricing$0.10 / 1M in$0.20 / 1M out$0.01 cache read

Context: 1,048,576 tokens•Max Output: 32,768 tokens•Released: 2026-07-21

TECHNICAL SPECIFICATIONS

Context Window1,048,5761M tokens

Max Output32,76832.8K tokens

LicenseOpen SourceSelf-hostable

Input Modalities

Text

Function / Tool CallingSupported (MCP Ready)

Structured OutputsGuaranteed Schema

MODEL CONTEXT PROTOCOL (MCP) READINESS

✓ Laguna S 2.1 natively supports OpenAI / Anthropic format tool calling and is fully compatible with MCP servers and agent loops.

MCP Context Window Recommendations

With a context capacity of 1,048,576 tokens, this model can handle extremely large MCP resource manifests, complete database schemas, and multiple active server tool definitions simultaneously without degradation.

API CALL INVOCATION EXAMPLE

// Example: Calling Laguna S 2.1 via OpenAI SDK
import OpenAI from "openai";

const client = new OpenAI({
  apiKey: process.env.POOLSIDE_API_KEY,
});

const response = await client.chat.completions.create({
  model: "poolside/laguna-s-2.1",
  messages: [{ role: "user", content: "Hello! Can you inspect MCP tools?" }],
});

console.log(response.choices[0].message.content);