What is the difference between Laguna S 2.1 (free) and Qwen3 Coder Flash?

Laguna S 2.1 (free) is developed by Poolside while Qwen3 Coder Flash is developed by Qwen. Laguna S 2.1 (free) has a 262K token context window vs Qwen3 Coder Flash's 128K. 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 Coder Flash?

It depends on your use case. Laguna S 2.1 (free) and Qwen3 Coder Flash 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 Coder Flash?

Laguna S 2.1 (free) costs $0/M input tokens and Qwen3 Coder Flash costs $0.3/M input tokens. Laguna S 2.1 (free) is $0.30/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 Coder Flash on Rival?

This page shows a side-by-side comparison of Laguna S 2.1 (free) and Qwen3 Coder Flash 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 Coder Flash

Laguna S 2.1 (free) is cheaper than Qwen3 Coder Flash at $0/M vs $0.3/M input tokens.

Laguna S 2.1 (free) and Qwen3 Coder Flash compared across 10 shared prompts
Spec	Laguna S 2.1 (free)	Qwen3 Coder Flash
Input price	Free	$0.3/M tokens
Output price	Free	$1.5/M tokens
Context window	262K tokens	128K tokens
Weights	—	Closed
Free API (OpenRouter)	Yes (1 provider)	No
Released	Jul 2026	Sep 2025

Side by side

Same prompt, both answers

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

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 Coder Flash1,258 words

3-Month Longevity Optimization Plan Phase 1: Foundation Building (Weeks 1-4) Supplement Stack - Week 1-4 Core Foundation Supplements NAD+ Precursors: Nicotinamide Riboside (NR) 500mg, Nicotinamide Mononucleotide (NMN) 250mg - morning with breakfast Omega-3 EPA/DHA: 3g daily (1000mg each) - evening with meal Vitamin D3…

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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…

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 Coder Flash673 words

Here are the problematic clauses and suggested modifications for the contractor: Scope Modification (Clause 1) Problem: Client can modify scope "at any time without additional compensation" Modification: "Client may modify the scope with prior written notice and 30 days' advance notice.

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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 Coder Flash860 words

INTERNAL INVESTMENT COMMITTEE MEMO Subject: LedgerLift (LLLT) – Long Recommendation $55–$63 Range Date: April 5, 2025 1. Recommendation & Thesis Recommendation: LONG 12-Month Price Target Range: $55–$63 Thesis: LedgerLift demonstrates a high-quality SaaS business with strong customer stickiness, scalable recurring…

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Our Verdict

Laguna S 2.1 (free)

Qwen3 Coder FlashRunner-up

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

Slight edge

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 Coder Flash

Input

$0.30

Output

$1.50

Where to run it

2 hosts

Laguna S 2.1 (free)1 host

HostInOutContextUptime

Poolsidefp4$0 in$0 out262k100% up

Qwen3 Coder Flash1 host

HostInOutContextUptime

Alibaba Cloud$0.20 in$0.97 out1M100% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Same prompt, both answers

Advanced Longevity Plan (Biohacker)

Adversarial Contract Review

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 Coder Flash?

Which is better, Laguna S 2.1 (free) or Qwen3 Coder Flash?

How much does Laguna S 2.1 (free) cost compared to Qwen3 Coder Flash?

How can I compare Laguna S 2.1 (free) and Qwen3 Coder Flash on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages

Same prompt, both answers

Advanced Longevity Plan (Biohacker)

Adversarial Contract Review

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 Coder Flash?

Which is better, Laguna S 2.1 (free) or Qwen3 Coder Flash?

How much does Laguna S 2.1 (free) cost compared to Qwen3 Coder Flash?

How can I compare Laguna S 2.1 (free) and Qwen3 Coder Flash on Rival?

More comparisons

Against the newest arrivals

Same lab, same size, long tail

Model pages