What is the difference between Laguna S 2.1 (free) and Qwen3.8 Max Prime?

Laguna S 2.1 (free) is developed by Poolside while Qwen3.8 Max Prime is developed by Qwen. Laguna S 2.1 (free) has a 262K token context window vs Qwen3.8 Max Prime's 1.0M. You can compare their actual outputs across 10 challenges on Rival to see how they differ in practice.

Which is better, Laguna S 2.1 (free) or Qwen3.8 Max Prime?

It depends on your use case. Laguna S 2.1 (free) and Qwen3.8 Max Prime each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 10 challenges so you can judge which fits your needs best.

How much does Laguna S 2.1 (free) cost compared to Qwen3.8 Max Prime?

Laguna S 2.1 (free) costs $0/M input tokens and Qwen3.8 Max Prime costs $4/M input tokens. Laguna S 2.1 (free) is $4.00/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Laguna S 2.1 (free) and Qwen3.8 Max Prime on Rival?

This page shows a side-by-side comparison of Laguna S 2.1 (free) and Qwen3.8 Max Prime across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated Sep 2026

Laguna S 2.1 (free)vsQwen3.8 Max Prime

Laguna S 2.1 (free) is cheaper than Qwen3.8 Max Prime at $0/M vs $4/M input tokens.

Laguna S 2.1 (free) and Qwen3.8 Max Prime compared across 10 shared prompts
Spec	Laguna S 2.1 (free)	Qwen3.8 Max Prime
Input price	Free	$4/M tokens
Output price	Free	$12/M tokens
Context window	262K tokens	1.0M tokens
Weights	—	Closed
Free API (OpenRouter)	Yes (1 provider)	No
Released	Jul 2026	Sep 2026

Side by side

Same prompt, both answers

Opening lines from 3 of the 10 prompts both answered. Formatting stripped, words untouched.

Adversarial Contract Review

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

Laguna S 2.1 (free)275 words

I'll analyze each clause for potential exploitation against the contractor and suggest improvements. Exploitable Clauses & Recommended Modifications SCOPE CLAUSE Problem: "Client reserves the right to modify the scope at any time without additional compensation" Allows unlimited scope creep without extra pay No…

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Qwen3.8 Max Prime2,126 words

Contract Analysis: Exploitative Clauses & Recommended Modifications Executive Summary This agreement is severely one-sided in favor of the Client. Nearly every clause shifts risk, cost, or obligation onto the Contractor while granting the Client broad unilateral rights. Below is a clause-by-clause breakdown.

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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…

Laguna S 2.1 (free)1,140 words

Comprehensive 3-Month Longevity Optimization Plan Phase 1: Foundation & Assessment (Month 1) Week 1-2: Baseline Establishment Comprehensive Health Testing Complete blood panel (CBC, CMP, lipid panel, inflammatory markers: hs-CRP, IL-6) Hormone panel (testosterone, estrogen, DHEA, cortisol, thyroid panel) Genetic…

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Qwen3.8 Max Prime2,622 words

The Apex Longevity Protocol: A 3-Month Biohacker's Blueprint Disclaimer: This plan is for informational purposes only. Consult a physician before beginning any new supplement, fasting, or exercise protocol. Bloodwork and medical clearance are prerequisites.

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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…

Laguna S 2.1 (free)910 words

INTERNAL INVESTMENT COMMITTEE MEMO 1. Recommendation & Thesis Recommendation: LONG 12-Month Price Target Range: $62 – $75/share Thesis: LedgerLift is a high-quality B2B SaaS platform with strong recurring revenue, exceptional unit economics, and durable customer retention.

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Qwen3.8 Max Prime1,001 words

INVESTMENT COMMITTEE MEMO LedgerLift (LLLT) B2B Spend Management & AP Automation SaaS Date: [Current] Analyst: [Name] Sector: Enterprise Software RECOMMENDATION LONG 12-Month Price Target: $50–$58 Current: $46 Thesis: LedgerLift is a high-quality compounder (123% NRR, 18-month CAC payback, 92% subscription mix) trading…

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Our Verdict

Qwen3.8 Max Prime

Laguna S 2.1 (free)Runner-up

Not enough votes to call it. On the specs, Qwen3.8 Max Prime has the edge: newer, bigger context window.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Laguna S 2.1 (free)

Input

$0.000

Output

$0.000

Qwen3.8 Max Prime

Input

$4.00

Output

$12.00

Where to run it

2 hosts

Laguna S 2.1 (free)1 host

HostInOutContextUptime

Poolsidefp4$0 in$0 out262k99.9% up

Qwen3.8 Max Prime1 host

HostInOutContextUptime

Alibaba Cloud$4.00 in$12.00 out1M99.9% up

Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Same prompt, both answers

Adversarial Contract Review

Advanced Longevity Plan (Biohacker)

Advanced Investment Memo (IC Memo)

Cost per 1M tokens

2 hosts

What we learned reading every model

Common questions

What is the difference between Laguna S 2.1 (free) and Qwen3.8 Max Prime?

Which is better, Laguna S 2.1 (free) or Qwen3.8 Max Prime?

How much does Laguna S 2.1 (free) cost compared to Qwen3.8 Max Prime?

How can I compare Laguna S 2.1 (free) and Qwen3.8 Max Prime on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages

Same prompt, both answers

Adversarial Contract Review

Advanced Longevity Plan (Biohacker)

Advanced Investment Memo (IC Memo)

Cost per 1M tokens

2 hosts

What we learned reading every model

Common questions

What is the difference between Laguna S 2.1 (free) and Qwen3.8 Max Prime?

Which is better, Laguna S 2.1 (free) or Qwen3.8 Max Prime?

How much does Laguna S 2.1 (free) cost compared to Qwen3.8 Max Prime?

How can I compare Laguna S 2.1 (free) and Qwen3.8 Max Prime on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages