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  1. Home
  2. Models
  3. Laguna XS 2.1 (free)
Updated Sep 22, 2026
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Openings

How Laguna XS 2.1 (free) starts an answer

The first lines of 5 of its 7 written answers. Formatting stripped, words untouched.

Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

877 words
INVESTMENT COMMITTEE MEMO Subject: LedgerLift (LLLT) – Long/Short/Comps Analysis Date: [Insert Date] Recommendation: LONG 12-Month Price Target Range: $85–$105 Thesis: LedgerLift is executing on a best-in-class B2B SaaS spend management platform with high net revenue retention (NRR), strong gross margins, and a rapidly…
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Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

870 words
The Transistor Revolution: A 1920 Timeline Analysis Immediate Impact (1920-1940) Early Military Applications With transistors available 27 years before radar, telecommunications would see revolutionary improvements: Radio warfare: Nations could develop sophisticated radio direction-finding and jamming capabilities by…
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Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

828 words
3-Month Longevity & Performance Optimization Plan for a Biohacker Designed for advanced biohackers with a focus on longevity, cognitive sharpness, and peak physical performance. Assumes access to basic medical testing, wearables, and some advanced tools (e.g., neurofeedback apps).
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Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

635 words
I'll analyze each clause in this software consulting agreement to identify potential risks to the contractor and suggest modifications with legal reasoning. Clause-by-Clause Analysis Clause 1: SCOPE Risk: Unlimited scope creep without additional compensation Modification: Add: "Any modification to the scope requiring…
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Explain Like I'm a Specific Expert

Explain how a large language model (like GPT or Claude) learns and generates text to each of these three audiences: 1. **An experienced…

610 words
For the Software Engineer Think of training a language model like building a distributed prediction system with an incredibly complex API contract. Instead of training on labeled datasets where you explicitly tell it "this text is sentiment-positive," you're feeding it massive amounts of text and asking it to predict…
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Compare Laguna XS 2.1 (free)

Laguna XS 2.1 (free) vs Ox Alpha11 shared prompts · Landed Aug 2026
Laguna XS 2.1 (free) vs MiniMax M311 shared prompts · Landed Jun 2026
Laguna XS 2.1 (free) vs Mercury 2.511 shared prompts · Landed Sep 2026
Laguna XS 2.1 (free) vs Ling 3.0 Flash Fin (free)11 shared prompts · Landed Sep 2026
Laguna XS 2.1 (free) vs Muse Spark 1.311 shared prompts · Landed Sep 2026
Laguna XS 2.1 (free) vs Gemini 3.8 Flash11 shared prompts · Landed Sep 2026
Laguna XS 2.1 (free) vs Muse Spark 1.3 Contributor11 shared prompts · Landed Sep 2026
Laguna XS 2.1 (free) vs Grok 4.611 shared prompts · Landed Aug 2026
Laguna XS 2.1 (free) vs Dots3-Note Preview11 shared prompts · Landed Aug 2026
Laguna XS 2.1 (free) vs Seed 2.0 Code11 shared prompts · Landed Aug 2026
Laguna XS 2.1 (free) vs Seed 2.1 Turbo11 shared prompts · Landed Aug 2026
Laguna XS 2.1 (free) vs Gemini 3.7 Flash11 shared prompts · Landed Aug 2026

Prompts Laguna XS 2.1 (free) answered

  • Advanced Longevity Plan (Biohacker)reasoning
  • Adversarial Contract Reviewreasoning
  • Beginner's Longevity Planreasoning
  • Historical Counterfactual Analysisreasoning
  • Retro macOS UI Recreationweb design
  • Advanced Investment Memo (IC Memo)financial modeling

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Laguna XS 2.1 (free)

Laguna XS 2.1 (free)

Poolside open-weight coding model with 33B total and 3B active parameters, designed for software engineering and agent workflows. This free OpenRouter endpoint exposes a 262K context window.

OpenRouterDocsBlog
Provider
Poolside
Released
2026-07-02
Size
LARGE
Free API (OpenRouter)
Yes, 1 provider (via OpenRouter)
Per 1M tokens
$0.00 in · $0.00 out
Rival’s tab
$0.00
11/11 receipts survived

Free API endpoint listed

Laguna XS 2.1 (free) has a free endpoint in Rival’s OpenRouter listings. Free requests have usage limits and depend on provider availability.

Provider data: 22 Sep 2026 · OpenRouter usage limits

View free endpoint↗
Get API accessProvider and language code samples
Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"poolside/laguna-xs-2.1:free"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

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Model Responses

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Best AI for Creative Writing

A stand-up set with puns banned, a manifesto against CAPTCHA, an interview wi...