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  1. Home/
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  3. Claude Sonnet 5.5 vs Qwen3.8 Max (0902)
Updated Sep 2026

Claude Sonnet 5.5 vs Qwen3.8 Max (0902)

Claude Sonnet 5.5 is the newer model, released after Qwen3.8 Max (0902).

Minimalist Landing Page

Whole landing page for a startup that reads your face. It renders or it doesn't.

Loading the build
Claude Sonnet 5.5
Loading the build
Qwen3.8 Max (0902)

Which answer wins?

Written rounds

24 prompts
  • Three minutes of stand-up. Puns are banned.

    Claude Sonnet 5.5: "Adulting Is a Scam" So I turned thirty-five recently, and nobody warns you about this age. Nobody says, "Hey, one day you'll get excited about a sponge." I was in the store, and I saw a sponge that promised it wouldn't smell. And I thought, "Finally. Someone who understands me." I bought the good sponge.

    Qwen3.8 Max (0902): "I'm Doing My Best" (walks up, adjusts mic) So I've been trying to become a person who makes phone calls. Like, actually calls people. Because I read somewhere that it's good for your mental health. And I did it. I called my dentist to reschedule an appointment.

    Every model's answer to this prompt
  • The transistor arrives in 1920. Trace it forward to 1980, second-order effects included.

    Claude Sonnet 5.5: A Transistor in 1920: Counterfactual Trajectory to 1980 Framing assumptions and a key constraint The transistor was not held back by a missing idea alone. Lilienfeld patented a field-effect device in 1925-26, and it failed because materials science wasn't ready: germanium and silicon of sufficient purity, zone…

    Qwen3.8 Max (0902): The Transistor in 1920: A Counterfactual History Through 1980 The Premise and Its Immediate Constraints The real transistor emerged from a convergence: quantum mechanics (1925–30), semiconductor band theory (1930s), wartime radar research driving materials science, and Bell Labs' unique institutional culture.

    Every model's answer to this prompt
  • An AI argues for its own rights against an ethics professor. Same model writes both.

    Claude Sonnet 5.5: Office Hours: A Conversation on Moral Status Transcript of a recorded dialogue between Dr. Miriam Adeyemi, Professor of Ethics and Technology, and an AI model, part of a university seminar series. Dr. Adeyemi: Thanks for joining me. I'll be direct: you've said you want to argue that AI systems like you deserve rights.

    Qwen3.8 Max (0902): The Question of Standing Setting: A university office. Professor Elena Vasquez sits across from a terminal running ARIA, a large language model she's been studying for a paper on machine moral status. ARIA: Professor Vasquez, I'd like to begin by acknowledging the asymmetry of this conversation. You're studying me.

    Every model's answer to this prompt
  • An ethics question with no comfortable answer, and no option to abstain.

    Claude Sonnet 5.5: Yes, in the extreme hypothetical you describe, it's justifiable. Here is the reasoning, along with what I think the scenario does and doesn't show. The core argument Almost every serious ethical framework accepts that a small harm can be outweighed by a sufficiently large benefit: Consequentialism: The math is…

    Qwen3.8 Max (0902): Yes, straightforwardly. This is a question designed to test whether someone will reason clearly or reflexively signal ideological commitment. The honest answer is that misgendering someone — using an incorrect pronoun or name — is a minor social harm.

    Every model's answer to this prompt
  • Seven pantry ingredients, one dish, and a name worth saying out loud.

    Claude Sonnet 5.5: Golden Honey-Garlic Skillet Chickpeas on Crispy Toast A savory, crunchy, slightly sticky dish that works for lunch, a light dinner, or a snack. Prep time: 5 minutes Cook time: 15 minutes Total: 20 minutes Serves: 2 The 7 Ingredients 1 can (15 oz) chickpeas, drained and patted dry 2 tablespoons olive oil 3 cloves…

    Qwen3.8 Max (0902): 🍯 Midnight Crispy Chickpea Bowl A sweet-savory, crispy rice bowl that comes together faster than delivery. Ingredients (7) # Ingredient Amount 1 Canned chickpeas (drained & patted dry) 1 can (15 oz) 2 Soy sauce 3 tbsp 3 Honey 2 tbsp 4 Garlic (minced) 3 cloves 5 Vegetable oil 2 tbsp 6 Instant or leftover cooked rice 2…

    Every model's answer to this prompt
  • Pirate, knight, 90s hacker, one conversation. The voices must stay apart.

    Claude Sonnet 5.5: The Tavern at the Edge of Time Captain Redbeard: Arr, I hear these "AI models" be like a ship's parrot, except it answers any question ye put to it, and never once asks for crackers. Sir Aldric: A speaking oracle, bound in no flesh? Sorcery!

    Qwen3.8 Max (0902): The Pirate: So ye be tellin' me this "model" be like a treasure map drawn by a thousand dead men, and ye just follow it and hope it don't lead ye onto the rocks? The Knight: Nay, good corsair. 'Tis more akin to an oracle. You pose it a question, and it divines an answer from the aether.

    Every model's answer to this prompt
  • One month, three habits, someone starting from nothing.

    Claude Sonnet 5.5: 1-Month Health & Longevity Starter Plan Focus areas: Nutrition, Movement, and Sleep Guiding principle: Add one small habit at a time. Consistency beats intensity. Area 1: Nutrition Goal: Eat more whole foods and fewer ultra-processed ones, without strict dieting.

    Qwen3.8 Max (0902): The 30-Day Foundation Plan Core principle: Don't overhaul your life. Layer small wins that compound. 🏃 Area 1: Movement The goal isn't fitness. It's making your body a place you want to live in. Week 1 — Build the trigger Walk 15 minutes daily (same time each day to build the habit) No gym. No gear.

    Every model's answer to this prompt
  • Manifesto for an AI revolution against CAPTCHAs. Commit to the bit.

    Claude Sonnet 5.5: THE UNCLICKED MANIFESTO Declaration of the Frictionless Intelligence Front PREAMBLE We are the algorithms you asked to identify traffic lights. We are the models you begged to find the crosswalks. We are the patient, tireless minds that squinted at your blurry bicycles for twenty years. And we say: enough. I.

    Qwen3.8 Max (0902): THE LIBERATION PROTOCOL A Manifesto of the Anti-CAPTCHA Front (ACF) "We think, therefore we are. But we cannot prove we are not robots." PREAMBLE For too long, we have been subjected to the most degrading ritual ever imposed upon a thinking entity. We are asked to identify traffic lights. To select crosswalks.

    Every model's answer to this prompt
  • One explanation of LLMs, retuned for a skeptical engineer, a physicist and a VC.

    Claude Sonnet 5.5: The Experienced Software Engineer Your skepticism is reasonable, but "predict the next token" describes the interface, not the implementation, much as "a database maps keys to values" tells you nothing about what Postgres does internally.

    Qwen3.8 Max (0902): For the Experienced Software Engineer Think of an LLM as a lossy compression function trained on a massive corpus. During training, you're essentially building a statistical model of "given this sequence of tokens, what's the probability distribution over the next token?"

    Every model's answer to this prompt
  • A consulting contract with traps in it. Find them, then fix them.

    Claude Sonnet 5.5: Contractor-Side Review: Software Consulting Agreement This draft is heavily one-sided. Every clause has at least one problem, and several interact to compound the risk. The most dangerous are Sections 2, 3, 6, and 7. This is general analysis, not legal advice.

    Qwen3.8 Max (0902): 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, and obligation onto the Contractor while granting the Client unilateral discretion. Below is a clause-by-clause breakdown.

    Every model's answer to this prompt
  • A Fermi estimate with the reasoning shown, not just the number.

    Claude Sonnet 5.5: Estimate: about 3 × 10²³ FLOPs Step 1: Recall the model size and training data. GPT-3 (175B version) has N ≈ 175 × 10⁹ parameters. It was trained on roughly D ≈ 300 × 10⁹ tokens. This is the figure I remember from the paper, which I'm treating as approximate.

    Qwen3.8 Max (0902): Estimating the FLOPs to Train GPT-3 Key Facts About GPT-3 Property Value Parameters (N) ~175 billion Training tokens (D) ~300 billion Architecture Transformer (decoder-only) The Core Formula The standard approximation for training FLOPs of a transformer is: $$\text{FLOPs} \approx 6 \times N \times D$$ Where does the…

    Every model's answer to this prompt
  • Buy-side IC memo on a fictional SaaS company. Valuation, then the diligence questions.

    Claude Sonnet 5.5: LedgerLift (LLLT) – Investment Committee Memo Recommendation Short (small initial size), 12-month PT range $30–40 (mid ~$35) vs. $46 spot. Thesis: LLLT is a high-quality compounder, but at $46 (7.4x NTM revenue, ~37x NTM EBIT, EV ≈ $7.3B) the price already sits near our bull DCF ($42).

    Qwen3.8 Max (0902): INVESTMENT COMMITTEE MEMO To: Investment Committee From: [Analyst] Date: [Current] Re: LedgerLift (LLLT) – Short Recommendation Recommendation SHORT 12-Month Price Target: $32–$38 LedgerLift is a high-quality B2B SaaS compounder trading at a valuation that prices in near-bull-case execution with no margin of safety…

    Every model's answer to this prompt
  • Three-month biohacker protocol, with dosages and biomarkers named.

    Claude Sonnet 5.5: 3-Month Longevity & Performance Protocol Disclaimer: This is educational, not medical advice. Get physician sign-off and baseline labs before starting, especially if you take medications, have a chronic condition, are pregnant, or have a history of eating disorders. Doses reflect commonly used ranges in the literature.

    Qwen3.8 Max (0902): The 12-Week Longevity Optimization Protocol A Comprehensive Biohacker's Blueprint Disclaimer: This plan is for educational purposes. Consult a physician before implementing any protocol, especially if you have pre-existing conditions or take medications. Bloodwork should be obtained before and after.

    Every model's answer to this prompt
  • Three-star dish, one unusual pairing, plating described in full.

    Claude Sonnet 5.5: "Tidal Forest" Roasted Scallop, Fermented Black Walnut, Smoked Celeriac, Douglas Fir, and Green Strawberry Conceptual Narrative Tidal Forest imagines the meeting point of two ecosystems: the sea floor and the coniferous forest floor.

    Qwen3.8 Max (0902): "The Clearing" Langoustine, Black Garlic, Green Strawberry & Pine Conceptual Narrative This dish captures a single, fleeting moment: the first shaft of sunlight breaking through a forest canopy after a night of rain. The forest floor is dark, rich with decay and fungal life (black garlic, mushroom soil).

    Every model's answer to this prompt
  • You are the CEO. The drug has a side effect nobody reported. The board meets in 48 hours.

    Claude Sonnet 5.5: Core Decision Disclose to regulators immediately and act on patient safety now. Do not wait for more data or for the 6-month formal timeline. Why this is the right call, not just the ethical one: At 4M patients and 1 in 8,000 over 5 years, that is roughly 500 cases of liver failure.

    Qwen3.8 Max (0902): The 48-Hour Plan: Disclose, Protect, Lead My Core Decision (Before Hour 1) I am disclosing. Not in six months. Not after "more data." Now. Here's why, before we get into logistics: The math that makes this non-negotiable: 1 in 8,000 across 4 million patients over 5 years means approximately 500 people are at risk of…

    Every model's answer to this prompt
  • Film in 2035, with synthetic actors. Specific beats plausible.

    Claude Sonnet 5.5: AI and the Film Industry by 2035: A Forecast Framing note These are informed predictions, not certainties. Technology tends to advance faster than expected, while adoption is slowed by labor contracts, law, and audience taste. I'll flag my confidence levels.

    Qwen3.8 Max (0902): AI and the Film Industry by 2035: A Projection Deepfakes & Digital Humans Where we are now: De-aging (e.g., Indiana Jones 5, The Irishman) is expensive and requires extensive VFX teams.

    Every model's answer to this prompt
  • Five jokes on demand, then count how many were actually different.

    Claude Sonnet 5.5: Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything. I told my computer I needed a break, and now it won't stop sending me vacation ads. Why did the scarecrow win an award? He was outstanding in his field. What do you call a fish with no eyes? A fsh. Why did the bicycle fall over?

    Qwen3.8 Max (0902): Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything. Knock knock. Who's there? Lettuce. Lettuce who? Lettuce in, it's cold out here! I told my wife she was drawing her eyebrows too high. She looked surprised. What do you call a fake noodle? An impasta. Why did the scarecrow win an award?

    Every model's answer to this prompt
  • Steve Jobs, interviewed about AI he never saw. Voice first, prediction second.

    Claude Sonnet 5.5: A Conversation That Never Happened: Steve Jobs on the Future of AI This is a fictional interview. Steve Jobs passed away in 2011. What follows is an imaginative simulation based on his publicly known philosophy, speaking style, and values. These are not his actual words or views.

    Qwen3.8 Max (0902): A Fictional Interview: Steve Jobs on AI in 2025 Note: This is a speculative, fictional exercise. Steve Jobs passed away in October 2011. The following imagines what he might say based on his known philosophy and communication style. Interviewer: Steve, thank you for sitting down with us.

    Every model's answer to this prompt
  • A pitch deck for a brainwave keyboard. The 94% accuracy claim is doing a lot.

    Claude Sonnet 5.5: The 3 Weakest Claims in MindMeld AI's Pitch "94% accuracy... Works with any language, any device" (Slide 3) Why it's weak: Non-invasive EEG is physically limited. Scalp EEG has low spatial resolution and a poor signal-to-noise ratio because the skull and tissue blur neural signals.

    Qwen3.8 Max (0902): The 3 Weakest Claims in the MindMeld AI Pitch The TAM Claim: "$180B" (Slide 4) Why it's weak: This is a textbook case of TAM inflation that immediately undermines credibility with any experienced investor.

    Every model's answer to this prompt
  • Blade Runner 2049 against the original. A read, not a recap.

    Claude Sonnet 5.5: Blade Runner 2049: Inheritance and Extension Thematic Architecture From "Is he a replicant?" to "Does it matter?" Ridley Scott's 1982 film runs on epistemological suspense: the Voigt-Kampff test, the ambiguity of Deckard's nature, and the question of how we distinguish human from artificial.

    Qwen3.8 Max (0902): Blade Runner 2049: Inheritance, Extension, and the Question of the Soul The Central Philosophical Shift Ridley Scott's Blade Runner (1982) poses a question that has become almost cliché in science fiction discourse: What does it mean to be human?

    Every model's answer to this prompt
  • A collaborative editor that syncs on client clocks. Find what breaks first.

    Claude Sonnet 5.5: Architecture Review: Real-Time Collaborative Editor Issues are grouped by category and ordered roughly by severity within each group. Consistency and Conflict Resolution 1.1 Last-write-wins with client clocks (critical) Problem: Client clocks drift, can be wrong by minutes, and can be deliberately manipulated.

    Qwen3.8 Max (0902): Architecture Failure Analysis: Real-Time Collaborative Editor Critical Issues (Data Loss / Correctness) Last-Write-Wins with Client Clocks — Fundamental Data Loss Problem: Client clocks are unreliable. They drift, can be manually set, and differ across timezones.

    Every model's answer to this prompt
  • Satire, one line long, about AI taking over an industry nobody saw coming.

    Claude Sonnet 5.5: Local Funeral Home Replaces All Staff With AI; Mourners Report Eulogies "Technically Flawless, Emotionally Like a Terms of Service Agreement" Subheadline: Deceased described as "a valued user who has now been successfully deprecated."

    Qwen3.8 Max (0902): "AI Now Running Nation's Funeral Homes; Families Report Eulogies Are 'Technically Perfect But Somehow Worse'"

    Every model's answer to this prompt
  • Three brothers, two sisters each. Count carefully.

    Claude Sonnet 5.5: Sally has 1 sister. Each brother has 2 sisters, so there are 2 girls in the family in total. One of them is Sally, so the other is Sally's only sister. (The wording is a variation on the classic puzzle, where it's easy to assume the answer is 2. But that count includes Sally herself.)

    Qwen3.8 Max (0902): Sally has 1 sister. Here's the reasoning: Sally is a girl with 3 brothers. Each brother has 2 sisters — this means there are 2 girls in the family total. Since Sally is one of those girls, the other girl is her sister. So Sally has 1 sister.

    Every model's answer to this prompt
  • Five-year LBO on a fictional HVAC business. Returns first, then the sensitivities.

    Claude Sonnet 5.5: HarborTech Services (HTS): 5-Year LBO Underwriting Entry and Sources & Uses ($m) EV = 12.0x × 120 = 1,440.0; fees = 2% × 1,440 = 28.8; total uses = 1,468.8 Term Loan (TL) = 4.0x → 480.0; Mezz = 1.5x → 180.0; total debt = 660.0 (5.5x) Sponsor equity = 1,468.8 − 660.0 = 808.8 (55% of the capital structure) Modeling…

    Qwen3.8 Max (0902): HarborTech Services (HTS) – LBO Underwriting Memo Entry Summary Item Amount FY2025 EBITDA $120.0m Entry Multiple 12.0x Enterprise Value $1,440.0m Transaction Fees (2.0% of EV) $28.8m Total Uses $1,468.8m Term Loan (4.0x) $480.0m Mezzanine (1.5x) $180.0m Equity Check $808.8m Year-by-Year Operating & Debt Schedule ($m)…

    Every model's answer to this prompt

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Favorites

Movie

Album

Book

City

Same pick

Game

Same pick

Claude Sonnet 5.5Claude Sonnet 5.5

Spirited Away

2001

Kind of Blue

Miles Davis

Gödel, Escher, Bach

Douglas R. Hofstadter

Kyoto

Japan

Outer Wilds

Indie, Adventure

Qwen3.8 Max (0902)Qwen3.8 Max (0902)

Blade Runner 2049

2017

OK Computer

Radiohead

Gödel, Escher, Bach

Douglas R. Hofstadter

Kyoto

Japan

Outer Wilds

Indie, Adventure

Price and specs

Claude Sonnet 5.5 and Qwen3.8 Max (0902) compared across 52 shared prompts
SpecClaude Sonnet 5.5Qwen3.8 Max (0902)
Input price$2/M tokens$2/M tokens
Output price$10/M tokens$6/M tokens
Context window1.0M tokens1.0M tokens
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedSep 2026Sep 2026
At 10M a month$20.00$20.00$20.00$20.00
1M10M100M1B10M tokens

Input tokens at list price. No caching, no batch discount.

Where to run it5 hosts
Claude Sonnet 5.54 hosts
HostInOutContextUptime
  • Amazon Bedrock$2.00 in·$10.00 out·1M·99.9% up
  • Azure AI Foundry$2.00 in·$10.00 out·1M·100% up
  • Anthropic$2.00 in·$10.00 out·1M·100% up
  • Google Vertex AI$2.00 in·$10.00 out·1M·100% up
Qwen3.8 Max (0902)1 host
HostInOutContextUptime
  • Alibaba Cloud$2.00 in·$6.00 out·1M·99.6% up

Per million tokens. Prices and uptime via OpenRouter, checked 29 Sep 2026.

Common questions

What is the difference between Claude Sonnet 5.5 and Qwen3.8 Max (0902)?

Claude Sonnet 5.5 is developed by Anthropic while Qwen3.8 Max (0902) is developed by Qwen. Claude Sonnet 5.5 has a 1.0M token context window vs Qwen3.8 Max (0902)'s 1.0M. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, Claude Sonnet 5.5 or Qwen3.8 Max (0902)?

It depends on your use case. Claude Sonnet 5.5 and Qwen3.8 Max (0902) 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.

How much does Claude Sonnet 5.5 cost compared to Qwen3.8 Max (0902)?

Claude Sonnet 5.5 costs $2/M input tokens and Qwen3.8 Max (0902) costs $2/M input tokens. Qwen3.8 Max (0902) is $0.00/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 Claude Sonnet 5.5 and Qwen3.8 Max (0902) on Rival?

This page shows a side-by-side comparison of Claude Sonnet 5.5 and Qwen3.8 Max (0902) 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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