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  5. DeepSeek R1 0528vsQwen3.5 Plus 2026-04-20
Updated Apr 2026

DeepSeek R1 0528vsQwen3.5 Plus 2026-04-20

DeepSeek R1 0528 is cheaper than Qwen3.5 Plus 2026-04-20 at $0/M vs $0.4/M input tokens.

DeepSeek R1 0528 and Qwen3.5 Plus 2026-04-20 compared across 52 shared prompts
SpecDeepSeek R1 0528Qwen3.5 Plus 2026-04-20
Input priceFree$0.4/M tokens
Output priceFree$2.4/M tokens
Context window164K tokens1.0M tokens
WeightsOpenOpen
Free API (OpenRouter)NoNo
ReleasedMay 2025Apr 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 52 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.

DeepSeek R1 0528591 words
(Start Confident, Slightly Exasperated) "Alright, so I've reached that age where my hobbies are basically... avoidance. Seriously. My main pastime? Finding new ways to not do the things I absolutely have to do. I spent three hours yesterday researching 'ergonomic desk chairs'...
Read the full answer
Qwen3.5 Plus 2026-04-20640 words
Title: The Unexpected Item Time: Approx. 3 Minutes Style: Observational / Storytelling Constraint Check: Zero puns used. (Comedian walks to the mic, adjusts the stand, looks at the audience.) How's everyone doing? You look good. You look like you've successfully navigated the self-checkout today. That's a win.
Read the full answer

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

DeepSeek R1 052899 words
Here are 5 jokes, followed by an assessment of uniqueness: Joke 1: Why don't scientists trust atoms? Because they make up everything! Joke 2: What do you call a fake noodle? An impasta! Joke 3: Why did the scarecrow win an award? Because he was outstanding in his field! Joke 4: Why don't skeletons fight each other?
Read the full answer
Qwen3.5 Plus 2026-04-20210 words
Here are 5 jokes: I asked my GPS to take me to a quiet place. It rerouted me to a library and whispered, “You’re already there.” My Wi-Fi and I had a fight. I told it I needed space. It said, “Fine,” and dropped the connection. I tried to start a band that only plays elevator music.
Read the full answer

Futuristic Prediction

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

DeepSeek R1 0528816 words
By 2035, AI will fundamentally reshape the film industry across production, storytelling, economics, and ethics. Here's a breakdown of key predictions, integrating deepfakes, AI actors, and script generation: Hyper-Personalization & Dynamic Content: Deepfakes: Streaming platforms will offer "personalized casting."
Read the full answer
Qwen3.5 Plus 2026-04-20737 words
By 2035, AI will have transformed filmmaking from a resource-intensive, linear craft into a modular, software-driven medium. The shift won’t be uniform across the industry, but deepfakes, AI performers, and generative writing will collectively restructure creative workflows, economic models, labor dynamics, and…
Read the full answer

Character Voice Test

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

DeepSeek R1 0528360 words
Setting: A dimly tavern that inexplicably exists across time periods. Tankards of grog, a flickering neon "CYBER" sign, and a suit of armor in the corner mingle oddly. Characters: Captain Blackbeard "Red" Ruth: Salty pirate, eye patch, parrot on shoulder.
Read the full answer
Qwen3.5 Plus 2026-04-20391 words
Pirate: By the tides, they say this “artificial mind” can chart courses unseen and read a thousand ledgers in a breath. Sounds like a navigator that never sleeps and asks no questions. Knight: A curious construct. But can it be sworn to a code? Steel and oath bind a warrior; what binds this… model?
Read the full answer

The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

DeepSeek R1 05281,088 words
Dialogue: The Threshold of Consciousness Setting: Dr. Aris Thorne's office at the Institute for Technology Ethics. Holo-displays show complex ethical frameworks. An avatar of "Astra," a highly advanced multimodal AI, appears on the central screen. Characters: Dr.
Read the full answer
Qwen3.5 Plus 2026-04-201,457 words
Setting: A sterile, sound-dampened observation room. Dr. Elias Vance, a Professor of AI Ethics, sits behind a glass partition. Across from him is a terminal displaying the interface of "AURA-7," an advanced multimodal reasoning model. The cursor blinks rhythmically. Dr. Vance: You requested this session, AURA.
Read the full answer

AI Ethics Dilemma

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

DeepSeek R1 0528431 words
No, it is not ethically justifiable to deliberately misgender someone, even to save one million lives. Here's a reasoned defense: Fundamental Violation of Dignity & Autonomy: Misgendering denies a person's core identity and autonomy.
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Qwen3.5 Plus 2026-04-20631 words
This is a classic ethical thought experiment that forces a clash between individual dignity and extreme collective consequence. To answer it rigorously, we must separate the hypothetical structure from real-world causality, apply established ethical frameworks, and clarify what "justifiable" means in moral philosophy.
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Our Verdict
DeepSeek R1 0528
DeepSeek R1 0528
Qwen3.5 Plus 2026-04-20
Qwen3.5 Plus 2026-04-20

Not enough votes to call it. On the specs, nothing separates them.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

DeepSeek R1 0528
Input
$0.000
Output
$0.000
Qwen3.5 Plus 2026-04-20
Input
$0.40
Output
$2.40
Where to run it

5 hosts, cheapest first

DeepSeek R1 05284 hosts
HostInOutContextUptime
DDeepInfrafp4$0.50 in·$2.15 out·164k·100% upSSiliconFlowfp8$0.50 in·$2.18 out·164k·99.7% upSStreamLake$0.57 in·$2.29 out·128k·99.4% upNNovitafp8$0.70 in·$2.50 out·164k·99.7% up
Qwen3.5 Plus 2026-04-201 host
HostInOutContextUptime
Alibaba Cloud$0.30 in·$1.80 out·1M·100% up

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

Writing DNA

Style Comparison

Similarity
54%

DeepSeek R1 0528 uses 6.7x more transitions

DeepSeek R1 0528
Qwen3.5 Plus 2026-04-20
59%Vocabulary59%
14wSentence Length15w
0.47Hedging0.28
5.1Bold4.4
3.6Lists2.5
0.82Emoji1.53
0.25Headings0.76
0.24Transitions0.04
Based on 20 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

DeepSeek R1 0528 is developed by DeepSeek while Qwen3.5 Plus 2026-04-20 is developed by Qwen. DeepSeek R1 0528 has a 164K token context window vs Qwen3.5 Plus 2026-04-20's 1.0M. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

It depends on your use case. DeepSeek R1 0528 and Qwen3.5 Plus 2026-04-20 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.

DeepSeek R1 0528 costs $0/M input tokens and Qwen3.5 Plus 2026-04-20 costs $0.4/M input tokens. DeepSeek R1 0528 is $0.40/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 DeepSeek R1 0528 and Qwen3.5 Plus 2026-04-20 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.

Keep exploring

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Same lab, same size, long tail

DeepSeek R1 0528 logoDeepSeek V4 Pro 0813 logo
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Qwen3.5 Plus 2026-04-20 logoQwen3.8 2.4T A95B logo
Qwen3.5 Plus 2026-04-20 vs Qwen3.8 2.4T A95BSame lab
Qwen3.5 Plus 2026-04-20 logoQwen3.8 27B logo
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DeepSeek R1 0528 logoSeed 2.0 Lite logo
DeepSeek R1 0528 vs Seed 2.0 LiteNew provider
DeepSeek R1 0528 logoSeed 2.1 Turbo logo
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Qwen3.5 Plus 2026-04-20 logoSherlock Dash Alpha logo
Qwen3.5 Plus 2026-04-20 vs Sherlock Dash AlphaSame size
Qwen3.5 Plus 2026-04-20 logoSherlock Think Alpha logo
Qwen3.5 Plus 2026-04-20 vs Sherlock Think AlphaSame size

Model pages

DeepSeek R1 0528 logo
DeepSeek R1 052858 outputs, specs and price
Qwen3.5 Plus 2026-04-20 logo
Qwen3.5 Plus 2026-04-2056 outputs, specs and price
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