What is the difference between Laguna S 2.1 (free) and Qwen3.5 9B?

Laguna S 2.1 (free) is developed by Poolside while Qwen3.5 9B is developed by Qwen. Laguna S 2.1 (free) has a 262K token context window vs Qwen3.5 9B's 262K. You can compare their actual outputs across 9 challenges on Rival to see how they differ in practice.

Which is better, Laguna S 2.1 (free) or Qwen3.5 9B?

It depends on your use case. Laguna S 2.1 (free) and Qwen3.5 9B each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 9 challenges so you can judge which fits your needs best.

How much does Laguna S 2.1 (free) cost compared to Qwen3.5 9B?

Laguna S 2.1 (free) costs $0/M input tokens and Qwen3.5 9B costs $0.1/M input tokens. Laguna S 2.1 (free) is $0.10/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 Qwen3.5 9B on Rival?

This page shows a side-by-side comparison of Laguna S 2.1 (free) and Qwen3.5 9B 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 Jul 2026

Laguna S 2.1 (free)vsQwen3.5 9B

Laguna S 2.1 (free) is cheaper than Qwen3.5 9B at $0/M vs $0.1/M input tokens.

Laguna S 2.1 (free) and Qwen3.5 9B compared across 9 shared prompts
Spec	Laguna S 2.1 (free)	Qwen3.5 9B
Input price	Free	$0.1/M tokens
Output price	Free	$0.15/M tokens
Context window	262K tokens	262K tokens
Weights	—	Open
Free API (OpenRouter)	Yes (1 provider)	No
Released	Jul 2026	Mar 2026

Side by side

Same prompt, both answers

Opening lines from 3 of the 9 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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Qwen3.5 9B1,444 words

Disclaimer: I am an AI assistant and not an attorney. The following analysis is for informational purposes only and does not constitute legal advice. Contract enforceability varies significantly by jurisdiction (e.g., state laws in the US, common law in the UK, etc.).

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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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Qwen3.5 9B1,231 words

Disclaimer: I am an AI, not a doctor. This plan is for informational purposes only. Biohacking involves high-risk interventions (supplements, fasting, extreme training).

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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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Qwen3.5 9B597 words

MEMORANDUM TO: Investment Committee FROM: Equity Research Team DATE: October 26, 2025 SUBJECT: LedgerLift (LLLT) – Short Recommendation 1. Recommendation Action: Short 12-Month Price Target: $13 – $18 Thesis: LLLT trades at $46/share ($7.3B EV), implying a >30% premium to DCF-intrinsic value ($13–$29) and compressing…

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Our Verdict

Laguna S 2.1 (free)

Qwen3.5 9BRunner-up

Not enough votes to call it. On the specs, Laguna S 2.1 (free) has the edge: bigger model tier, newer.

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

Qwen3.5 9B

Input

$0.10

Output

$0.15

Where to run it

7 hosts, cheapest first

Laguna S 2.1 (free)1 host

HostInOutContextUptime

Poolsidefp4$0 in$0 out262k100% up

Qwen3.5 9B6 hosts

HostInOutContextUptime

Darkbloomfp4$0.08 in$0.13 out262k100% up DeepInfrabf16$0.10 in$0.15 out262k99.9% up SiliconFlowfp8$0.10 in$0.15 out262k99.2% up Venicefp8$0.10 in$0.15 out256k99.5% up Parasailbf16$0.10 in$0.25 out262k99.8% up Together$0.17 in$0.25 out262k98.8% up

Per million tokens. Prices and uptime via OpenRouter, checked 23 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

7 hosts, cheapest first

What we learned reading every model

Common questions

What is the difference between Laguna S 2.1 (free) and Qwen3.5 9B?

Which is better, Laguna S 2.1 (free) or Qwen3.5 9B?

How much does Laguna S 2.1 (free) cost compared to Qwen3.5 9B?

How can I compare Laguna S 2.1 (free) and Qwen3.5 9B 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

7 hosts, cheapest first

What we learned reading every model

Common questions

What is the difference between Laguna S 2.1 (free) and Qwen3.5 9B?

Which is better, Laguna S 2.1 (free) or Qwen3.5 9B?

How much does Laguna S 2.1 (free) cost compared to Qwen3.5 9B?

How can I compare Laguna S 2.1 (free) and Qwen3.5 9B on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages