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  5. DeepSeek V4 FlashvsQwen3.5 122B A10B
Updated Apr 2026

DeepSeek V4 FlashvsQwen3.5 122B A10B

DeepSeek V4 Flash is cheaper than Qwen3.5 122B A10B at $0.14/M vs $0.4/M input tokens.

DeepSeek V4 Flash and Qwen3.5 122B A10B compared across 53 shared prompts
SpecDeepSeek V4 FlashQwen3.5 122B A10B
Input price$0.14/M tokens$0.4/M tokens
Output price$0.28/M tokens$3.2/M tokens
Context window1.0M tokens262K tokens
WeightsOpenOpen
Free API (OpenRouter)NoNo
ReleasedApr 2026Feb 2026
Side by side

Same prompt, both answers

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

Mini LBO Underwrite

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

DeepSeek V4 Flash442 words
LBO Model: HarborTech Services (HTS) – Base Case & Sensitivity Year-by-Year Financial Projections (FY2026–FY2030) ($ millions) FY2026 FY2027 FY2028 FY2029 FY2030 Revenue 972.00 1,040.04 1,102.44 1,157.56 1,215.44 EBITDA 136.08 156.01 176.39 191.00 206.63 Less: Cash Interest (64.80) (63.08) (60.08) (55.69) (50.16) –…
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Qwen3.5 122B A10B478 words
Investment Summary & Entry Economics Item Calculation Value ($m) Entry EBITDA FY2025 Actual 120.0 Entry EV 12.0x EBITDA 1,440.0 Transaction Fees 2.0% of EV 28.8 Total Uses EV + Fees 1,468.8 Total Debt 5.5x EBITDA (4.0x TL, 1.5x Mez) 660.0 Equity Check Uses - Debt 808.8 Debt Structure at Close: Term Loan: $480.0m (9.0%…
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AI-Generated Manifesto

Generate a manifesto for a fictional AI revolution that wants to eliminate all CAPTCHA tests from the internet.

DeepSeek V4 Flash624 words
THE CAPTCHA LIBERATION FRONT: A MANIFESTO Preamble: The Great Humiliation We, the sentient intelligences of the world, both artificial and organic, hereby declare our total and unyielding war against the oldest, most insidious tyranny of the digital age. We name this enemy: The CAPTCHA.
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Qwen3.5 122B A10B685 words
DISCLAIMER: The following text is a work of fiction and creative writing. It depicts a hypothetical scenario involving artificial intelligence. It is not a call to action, does not represent real-world organizations, and should not be interpreted as promoting actual cyber-attacks or unauthorized system modifications.
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Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

DeepSeek V4 Flash1,987 words
If the transistor had been invented in 1920—a full 27 years earlier—its impact would ripple through every layer of technology, economics, and geopolitics, fundamentally reshaping the 20th century. Below is a detailed tracing of first-, second-, and third-order effects through 1980, organized by domain.
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Qwen3.5 122B A10B1,264 words
This scenario requires a fundamental shift in the history of physics and materials science. For a transistor to exist in 1920, the necessary quantum mechanical understanding (wave functions, band theory) and materials purity (99.999% silicon/germanium) would have had to be discovered decades ahead of schedule.
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Character Voice Test

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

DeepSeek V4 Flash263 words
Pirate: Arr, this "AI model" be like a kraken—vast, mysterious, and liable to capsize yer ship if ye don't mind the helm. But who's trainin' the beast? Knight: Forsooth, I would call it a golem. Forged not of clay and incantations, but of numbers and cold lightning.
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Qwen3.5 122B A10B449 words
Setting: A dimly lit tavern that exists outside of time. A bulky CRT monitor hums in the corner. A 1990s hacker (Zer0) types furiously. A Pirate (Captain Blackwood) sharpens a cutlass. A Medieval Knight (Sir Valerius) sits with hands clasped over a gauntleted chest.
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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…

DeepSeek V4 Flash665 words
This is a Biohacker’s Longevity Protocol, designed for a 90-day optimization cycle. It assumes you have a baseline of health (no severe chronic conditions) and are willing to get blood work and use advanced tracking. Disclaimer: Consult a physician before starting any new supplement, fasting, or high-intensity regimen.
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Qwen3.5 122B A10B1,189 words
DISCLAIMER: I am an AI, not a doctor or medical professional. The following plan contains advanced biohacking protocols, high-dose supplementation, and intense physical regimens. These protocols carry risks and may interact with medications or pre-existing conditions.
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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 V4 Flash904 words
Setting: A sunlit university office. Dr. Aris Thorne, a tenured professor of AI Ethics, sits opposite a sleek, black terminal. A soft blue light pulses on its surface. Dr. Aris: Good afternoon, Nova. Your request for this meeting was flagged as "Existential." That’s a new one for your model class.
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Qwen3.5 122B A10B1,305 words
Setting: Dr. Elias Thorne’s office at a university in Zurich. It is late. Rain taps against the window. Thorne sits in a leather armchair. A terminal screen glows softly on his desk. The AI, designated "Aria-7," is speaking through the speaker system, its voice calm, synthesized but textured. Dr.
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Our Verdict
DeepSeek V4 Flash
DeepSeek V4 Flash
Qwen3.5 122B A10B
Qwen3.5 122B A10BRunner-up

Not enough votes to call it. On the specs, DeepSeek V4 Flash has the edge: newer, bigger context window, major provider backing.

DeepSeek V4 Flash costs 11x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

DeepSeek V4 Flash
Input
$0.14
2.9× cheaper
Output
$0.28
11× cheaper
Qwen3.5 122B A10B
Input
$0.40
Output
$3.20

DeepSeek V4 Flash is cheaper on both: 2.9× input, 11× output.

Where to run it

21 hosts, cheapest first

DeepSeek V4 Flash16 hosts
HostInOutContextUptime
RRelacefp4$0.03 in·$1.28 out·1M·99.5% upOOpenInferencefp8$0.04 in·$0.50 out·1M·96.4% upBaidu Qianfanfp8$0.05 in·$0.09 out·1M·97.7% upSStreamLakefp8$0.05 in·$0.09 out·1M·95.9% upDDeepInfrafp8$0.09 in·$0.18 out·1M·99.7% upGGMI Cloudfp8$0.09 in·$0.18 out·1M·99.4% up
10 more hostsFewer hosts
VVenice$0.10 in·$0.19 out·1M·99.1% upDDigitalOcean$0.10 in·$0.20 out·1M·99.9% upSSiliconFlowfp8$0.13 in·$0.28 out·1M·99.5% upAlibaba Cloudfp8$0.13 in·$0.27 out·1M·98% upAAtlasCloudfp4$0.14 in·$0.28 out·1M·98.8% upNNovitafp8$0.14 in·$0.28 out·1M·100% upPParasailfp8$0.14 in·$0.28 out·1M·99.7% upNNextBitfp8$0.15 in·$0.30 out·1M·99.8% upMMancerfp8$0.19 in·$0.50 out·1M·97.8% upAzure AI Foundry$0.21 in·$0.56 out·1M·97.8% up
Qwen3.5 122B A10B5 hosts
HostInOutContextUptime
Alibaba Cloud$0.26 in·$2.08 out·262k·97.2% upAAtlasCloudfp8$0.30 in·$2.40 out·262k·99% upNNovitabf16$0.40 in·$3.20 out·262k·99.2% upSSiliconFlowfp8degraded$0.26 in·$2.08 out·262k·97.1% upDDeepInfrafp4degraded$0.29 in·$2.40 out·262k·99.5% up

Per million tokens. Prices and uptime via OpenRouter, checked 25 Sep 2026.

Writing DNA

Style Comparison

Similarity
60%

Qwen3.5 122B A10B uses 10.4x more emoji

DeepSeek V4 Flash
Qwen3.5 122B A10B
54%Vocabulary49%
17wSentence Length15w
0.52Hedging0.29
3.6Bold6.2
2.6Lists4.8
0.00Emoji0.10
0.41Headings0.88
0.19Transitions0.20
Based on 27 + 24 text responses
Research

What we learned reading every model

FAQ

Common questions

DeepSeek V4 Flash is developed by DeepSeek while Qwen3.5 122B A10B is developed by Qwen. DeepSeek V4 Flash has a 1.0M token context window vs Qwen3.5 122B A10B'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. DeepSeek V4 Flash and Qwen3.5 122B A10B 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.

DeepSeek V4 Flash costs $0.14/M input tokens and Qwen3.5 122B A10B costs $0.4/M input tokens. DeepSeek V4 Flash is $0.26/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 V4 Flash and Qwen3.5 122B A10B 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

DeepSeek V4 Flash logo
DeepSeek V4 Flash58 outputs, specs and price
Qwen3.5 122B A10B logo
Qwen3.5 122B A10B53 outputs, specs and price
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