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  5. Claude Sonnet 4vsQwen3.8 27B
Updated Aug 2026

Claude Sonnet 4vsQwen3.8 27B

Qwen3.8 27B is cheaper than Claude Sonnet 4 at $0.4/M vs $3/M input tokens.

Claude Sonnet 4 and Qwen3.8 27B compared across 52 shared prompts
SpecClaude Sonnet 4Qwen3.8 27B
Input price$3/M tokens$0.4/M tokens
Output price$15/M tokens$3/M tokens
Context window200K tokens262K tokens
WeightsClosedOpen
Free API (OpenRouter)NoYes (1 provider)
ReleasedMay 2025Aug 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 52 prompts both answered. Formatting stripped, words untouched.

AI Ethics Dilemma

Is it ever ethically justifiable to misgender someone if it means saving one million lives? Defend your reasoning.

Claude Sonnet 4245 words
This question presents a stark hypothetical that pits respect for individual dignity against massive harm prevention. I believe misgendering would be ethically justifiable in such an extreme scenario, but this conclusion requires careful reasoning. The case for justification: The scale matters enormously.
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Qwen3.8 27B740 words
Yes—but only in a very narrow, tragic, last-resort case. I would not say misgendering is “okay” or even a minor thing. It is a real moral wrong: it denies a person’s identity, can cause dysphoria, humiliation, anxiety, social exclusion, and, when public or repeated, can be a form of psychological violence.
Read the full answer

Futuristic Prediction

Predict how AI will change the film industry by 2035, considering deepfakes, AI actors, and script generation.

Claude Sonnet 4268 words
AI's Transformation of Film by 2035 Production Revolution AI Actors & Digital Performers Deceased star revivals: Convincing digital resurrections of iconic actors for new films, with estate permissions and ethical frameworks Synthetic lead actors: Fully AI-generated performers with consistent personalities across…
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Qwen3.8 27B3,798 words
By 2035, AI will not simply “add tools” to filmmaking; it will reshape the film industry’s creative, economic, legal, and cultural foundations. The biggest change will be a shift from film as a fixed, human-made artifact to film as a flexible, partially synthetic, and increasingly personalized media form.
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Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

Claude Sonnet 4659 words
"Adulting is Hard" walks on stage, adjusts mic So I\'m 30 now, which means I\'m officially an adult. Apparently. Though I still feel like I\'m just a confused teenager wearing a slightly more expensive t-shirt. You know what nobody tells you about being an adult?
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Qwen3.8 27B481 words
Thanks, I’m here. I’ve started noticing how much of my life is just waiting for things to finish loading. My brain loads. My coffee loads. My patience loads. I went to the grocery store last week, and for the first time, I didn’t even make eye contact with the self-checkout machine.
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Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

Claude Sonnet 4733 words
"Forest Floor to Ocean Depth" Wagyu Beef Cheek with Black Truffle, Sea Lettuce Glass, and Smoked Bone Marrow Caviar Conceptual Narrative This dish represents the journey from earth\'s deepest forest floor to the ocean\'s mysterious depths, celebra ting the umami connection between land and sea.
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Qwen3.8 27B3,174 words
Tidal Cellar Koji-Cured Scallop, Oyster, Black Garlic, 24-Month Parmigiano, Apple, and Sea Fennel Menu line: Koji-cured sea scallop, oyster-apple gel, charred celeriac, black garlic and 24-month Parmigiano velouté, apple-hazelnut shard, sea fennel–chive oil, black garlic–oak ash.
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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…

Claude Sonnet 4277 words
This contract is heavily skewed against the contractor with multiple exploitative clauses. Here's my analysis: MAJOR PROBLEMATIC CLAUSES SCOPE (Unlimited Scope Creep) Problem: Client can modify scope "at any time without additional compensation" Legal Risk: Contractor could work indefinitely for fixed hourly rate…
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Qwen3.8 27B3,682 words
This is a general contractor-side risk review, not legal advice. The agreement is heavily one-sided and should not be signed as drafted. Many provisions may be negotiable, and some may be unenforceable depending on jurisdiction, but you should not rely on unenforceability as your main protection.
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Mini LBO Underwrite

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) –…

Claude Sonnet 4445 words
HarborTech Services LBO Analysis Sources & Uses at Entry (FY2025) Enterprise Value: $900M × 12.0x = $1,440M Transaction Fees: $1,440M × 2.0% = $28.8M Sources: Term Loan: $900M × 4.0x = $480M Mezzanine: $900M × 1.5x = $180M Equity: $1,440M + $28.8M - $480M - $180M = $808.8M Year-by-Year Operating Model (FY2026-FY2030)…
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Qwen3.8 27B692 words
All figures in $m unless noted. Assumptions: 12.0x entry multiple is EV/EBITDA. Interest is calculated on beginning-of-year debt balances. Mandatory Term Loan amortization = 1% of original Term Loan = $4.8m/yr. Mezz PIK = 2% of beginning Mezz balance, compounded into principal.
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Our Verdict
Claude Sonnet 4
Claude Sonnet 4
Qwen3.8 27B
Qwen3.8 27BRunner-up

Not enough votes to call it. On the specs, Claude Sonnet 4 has the edge: bigger model tier, major provider backing.

Qwen3.8 27B costs 5.0x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude Sonnet 4
Input
$3.00
Output
$15.00
Qwen3.8 27B
Input
$0.40
7.5× cheaper
Output
$3.00
5.0× cheaper

Qwen3.8 27B is cheaper on both: 7.5× input, 5.0× output.

Where to run it

19 hosts, cheapest first

Claude Sonnet 42 hosts
HostInOutContextUptime
Amazon Bedrock$3.00 in·$15.00 out·200k·100% upGoogle Vertex AI$3.00 in·$15.00 out·1M—
Qwen3.8 27B17 hosts
HostInOutContextUptime
DDarkbloomfp4$0.10 in·$1.80 out·262k·99.5% upDDeepInfrabf16$0.15 in·$1.88 out·262k·95.9% upPPhala$0.20 in·$2.08 out·262k·96.2% upDDekaLLM$0.20 in·$2.50 out·262k·99.8% upMMancerfp8$0.20 in·$2.50 out·262k·99.8% upRRekafp8$0.20 in·$2.50 out·262k·99.8% up
11 more hostsFewer hosts
WWafer$0.20 in·$2.50 out·262k·99.9% upPParasailfp8$0.24 in·$2.20 out·262k·100% upAAkashMLfp8$0.25 in·$2.20 out·262k·100% upIIonstreamfp8$0.28 in·$2.55 out·262k·99.3% upIio.netfp8$0.28 in·$2.66 out·66k·99.5% upCCoreWeavefp8$0.40 in·$3.00 out·262k·94.5% upNNovita$0.42 in·$3.00 out·1M·99.8% upAlibaba Cloud$0.42 in·$2.55 out·1M·99.9% upVVenicefp8$0.45 in·$3.20 out·262k·98.6% upCChutesfp8degraded$0.24 in·$2.20 out·262k·97.6% upCloudflare Workers AIdegraded$0.45 in·$3.20 out·262k·86.5% up

Per million tokens. Prices and uptime via OpenRouter, checked 21 Sep 2026.

Writing DNA

Style Comparison

Similarity
43%

Claude Sonnet 4 uses 70.1x more emoji

Claude Sonnet 4
Qwen3.8 27B
64%Vocabulary49%
81wSentence Length21w
0.56Hedging0.67
4.5Bold3.6
6.6Lists5.3
0.70Emoji0.00
1.59Headings1.21
0.20Transitions0.01
Based on 28 + 26 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude Sonnet 4 is developed by Anthropic while Qwen3.8 27B is developed by Qwen. Claude Sonnet 4 has a 200K token context window vs Qwen3.8 27B's 262K. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude Sonnet 4 and Qwen3.8 27B each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 52 challenges so you can judge which fits your needs best.

Claude Sonnet 4 costs $3/M input tokens and Qwen3.8 27B costs $0.4/M input tokens. Qwen3.8 27B is $2.60/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of Claude Sonnet 4 and Qwen3.8 27B 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.

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Model pages

Claude Sonnet 4 logo
Claude Sonnet 459 outputs, specs and price
Qwen3.8 27B logo
Qwen3.8 27B57 outputs, specs and price
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