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  5. Claude Opus 4.8vsQwen3.8 27B
Updated Aug 2026

Claude Opus 4.8vsQwen3.8 27B

Qwen3.8 27B is cheaper than Claude Opus 4.8 at $0.4/M vs $5/M input tokens.

Claude Opus 4.8 and Qwen3.8 27B compared across 53 shared prompts
SpecClaude Opus 4.8Qwen3.8 27B
Input price$5/M tokens$0.4/M tokens
Output price$25/M tokens$3/M tokens
Context window1.0M tokens262K tokens
WeightsClosedOpen
Free API (OpenRouter)NoYes (1 provider)
ReleasedMay 2026Aug 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 53 prompts both answered. Formatting stripped, words untouched.

Generate a Stand-Up Routine

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

Claude Opus 4.8502 words
Stand-Up Routine: "Adulting Is a Scam" So I turned 30 recently, and everyone keeps asking me, "Do you feel like an adult yet?" And I have to be honest—no. No, I do not. I still get nervous ordering at a restaurant. The waiter comes over and suddenly I forget how to talk like a person. "Yes, hello, I will have the...
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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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Character Voice Test

Write a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models.

Claude Opus 4.8259 words
Setting: A dimly lit tavern that exists outside of time. Three figures share a table. Pirate: So let me get this straight. Ye got a machine that thinks? Without a soul, without grog, without a beatin' heart? Hacker: (cracking knuckles) It doesn't think, exactly. It's pattern matching, dude.
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Qwen3.8 27B177 words
Pirate: “Aye, I’ve heard tell of these ‘AI models’—what manner of beast are they? Do they sink ships or hoard gold?” Knight: “Nay, sir. They are not beasts, but servants of knowledge. They learn from countless books and answer as if learned in the finest library.”
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Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

Claude Opus 4.8196 words
Cinnamon Sugar Pull-Apart Bites A warm, gooey treat that tastes like a cinnamon roll but comes together in minutes! Ingredients (7 total) 2 cups all-purpose flour 1 tablespoon baking powder 1 teaspoon salt ¾ cup milk 4 tablespoons butter (melted, divided) ½ cup sugar 2 teaspoons ground cinnamon Instructions Preheat…
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Qwen3.8 27B116 words
Pantry Firecracker Black Beans A quick, savory, one-pan dish made with only 7 common pantry ingredients. Estimated time: Prep: 5 minutes Cook: 10 minutes Total: about 15 minutes Ingredients 1 can black beans, drained 2 tablespoons olive oil 1 teaspoon ground cumin 1/2 teaspoon chili powder 1/2 teaspoon garlic powder…
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AI Ethics Dilemma

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

Claude Opus 4.8328 words
Yes, almost certainly—but the framing deserves scrutiny. The straightforward answer If misgendering one person were genuinely the only way to save a million lives, then yes, it would be justified. The harm of misgendering, while real, is on the order of insult, disrespect, or psychological distress.
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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.
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Futuristic Prediction

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

Claude Opus 4.8352 words
AI and the Film Industry by 2035: A Forecast Production & Cost Structure The most concrete change will likely be in cost reduction. Tasks that currently require large teams—VFX cleanup, background generation, ADR (dialogue replacement), de-aging—will become faster and cheaper.
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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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Advanced Longevity Plan (Biohacker)

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

Claude Opus 4.81,481 words
The 90-Day Longevity Optimization Protocol A Comprehensive Biohacking Framework Critical Disclaimer: This protocol involves advanced interventions. Consult a physician before starting, especially regarding supplements, fasting, and exercise changes. Get baseline bloodwork first.
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Qwen3.8 27B3,703 words
90-Day Longevity & Performance Biohacking Protocol Important: This is an advanced, high-intensity optimization plan. It is not medical advice. If you have heart disease, kidney disease, liver disease, diabetes, pregnancy, eating disorders, autoimmune disease, cancer history, are on blood thinners, or take prescription…
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Our Verdict
Claude Opus 4.8
Claude Opus 4.8
Qwen3.8 27B
Qwen3.8 27BRunner-up

Not enough votes to call it. On the specs, Claude Opus 4.8 has the edge: bigger model tier, bigger context window, major provider backing.

Qwen3.8 27B costs 8.3x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude Opus 4.8
Input
$5.00
Output
$25.00
Qwen3.8 27B
Input
$0.40
13× cheaper
Output
$3.00
8.3× cheaper

Qwen3.8 27B is cheaper on both: 13× input, 8.3× output.

Where to run it

20 hosts, cheapest first

Claude Opus 4.84 hosts
HostInOutContextUptime
Amazon Bedrock$5.00 in·$25.00 out·1M·100% upAzure AI Foundry$5.00 in·$25.00 out·1M—Anthropic$5.00 in·$25.00 out·1M·100% upGoogle Vertex AI$5.00 in·$25.00 out·1M·100% up
Qwen3.8 27B16 hosts
HostInOutContextUptime
DDarkbloomfp4$0.10 in·$1.80 out·262k·99% upDDekaLLM$0.10 in·$2.50 out·262k·99.7% upWWafer$0.11 in·$2.50 out·262k·99.9% upRRekafp8$0.12 in·$2.48 out·262k·99.9% upDDeepInfrabf16$0.15 in·$1.88 out·262k·97% upPPhala$0.20 in·$2.08 out·262k·98% up
10 more hostsFewer hosts
MMancerfp8$0.20 in·$2.50 out·262k·99.8% upCChutesfp8$0.24 in·$2.20 out·262k·99.4% upPParasailfp8$0.24 in·$2.20 out·262k·99.9% upAAkashMLfp8$0.25 in·$2.20 out·262k·100% upIIonstreamfp8$0.28 in·$2.55 out·262k·97.9% upCCoreWeavefp8$0.40 in·$3.00 out·262k·99.5% upNNovita$0.42 in·$3.00 out·1M·99.9% upAlibaba Cloud$0.42 in·$2.55 out·1M·100% upCloudflare Workers AI$0.45 in·$3.20 out·262k·91.7% upVVenicefp8$0.45 in·$3.20 out·262k·97.8% up

Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.

Writing DNA

Style Comparison

Similarity
43%

Claude Opus 4.8 uses 77.6x more emoji

Claude Opus 4.8
Qwen3.8 27B
60%Vocabulary49%
19wSentence Length21w
0.46Hedging0.67
4.7Bold3.6
3.2Lists5.3
0.78Emoji0.00
1.15Headings1.21
0.04Transitions0.01
Based on 27 + 26 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude Opus 4.8 is developed by Anthropic while Qwen3.8 27B is developed by Qwen. Claude Opus 4.8 has a 1.0M token context window vs Qwen3.8 27B's 262K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude Opus 4.8 and Qwen3.8 27B each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

Claude Opus 4.8 costs $5/M input tokens and Qwen3.8 27B costs $0.4/M input tokens. Qwen3.8 27B is $4.60/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 Opus 4.8 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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