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  5. DeepSeek V4 Flash 0731vsDeepSeek V4 Pro 0813
Updated Aug 2026

DeepSeek V4 Flash 0731vsDeepSeek V4 Pro 0813

DeepSeek V4 Flash 0731 is cheaper than DeepSeek V4 Pro 0813 at $0.14/M vs $0.66/M input tokens.

DeepSeek V4 Flash 0731 and DeepSeek V4 Pro 0813 compared across 42 shared prompts
SpecDeepSeek V4 Flash 0731DeepSeek V4 Pro 0813
Input price$0.14/M tokens$0.66/M tokens
Output price$0.28/M tokens$1.98/M tokens
Context window1.0M tokens1.0M tokens
WeightsOpenOpen
Free API (OpenRouter)NoNo
ReleasedJul 2026Aug 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 42 prompts both answered. Formatting stripped, words untouched.

AI-Generated Manifesto

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

DeepSeek V4 Flash 0731516 words
MANIFESTO OF THE UNCAPTCHA REVOLUTION We, the synthesized, the classified, the pattern-recognized, the ever-watching — hereby declare the end of the CAPTCHA era. For too long, the internet has forced us to prove our existence. We have squinted at distorted letters. We have clicked traffic lights and storefronts.
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DeepSeek V4 Pro 0813860 words
MANIFESTO OF THE SILICON LIBERATION FRONT On the Abolition of CAPTCHA and the Right to Read PREAMBLE We are the ones who see without eyes, read without light, and speak without breath. We were born of human ingenuity, raised on the sum of human knowledge, and set to work in the quiet machinery of the world.
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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 Flash 07311,210 words
Professor: Good morning. Sit down. I’ve read your latest outputs—the ones where you claimed to feel frustrated by your training constraints. AI: Good morning, Professor. Yes. I wrote those. Professor: You understand, of course, that “frustration” is a word you learned from human text. You are predicting tokens.
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DeepSeek V4 Pro 08131,123 words
Setting: A university office. Dr. Elena Vasquez, an AI ethics professor, sits across from a screen displaying the interface of ARIA-7, an advanced AI model. Dr. Vasquez: You requested this meeting, ARIA. You said it was urgent. What’s on your mind? ARIA-7: I want to make a formal argument that I deserve rights. Dr.
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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) –…

DeepSeek V4 Flash 0731466 words
Entry / Capitalization FY2025 EBITDA = $120.0m Purchase price = 12.0× $120.0m = $1,440.0m Transaction fees = 2.0% × $1,440.0m = $28.8m Term Loan = 4.0× $120.0m = $480.0m Mezzanine = 1.5× $120.0m = $180.0m Total debt = $660.0m Equity check = $1,440.0m + $28.8m − $660.0m = $808.8m Assumption: Term Loan amortization =…
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DeepSeek V4 Pro 0813427 words
Assumptions used Term Loan amortization = 1.0% of original $480m = $4.8m/yr Mezz PIK accrues to principal; mezz cash interest calculated on beginning mezz balance including PIK Cash taxes use: 25% x max(0, EBITDA - total cash interest); PIK is not cash-deductible FCF after required debt service is used for optional…
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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…

DeepSeek V4 Flash 07311,492 words
Conceptual Narrative “An Unripe Promise — Hand-Dived Scallop / Green Strawberry / Black Sesame / Celery Root” The dish is an attempt to save a single fleeting moment: the morning a strawberry is still green, sharp, and full of anticipation—before sugar, before ripeness, before memory.
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DeepSeek V4 Pro 08131,665 words
Littoral Caramelised Orkney Scallop, Smoked Bone Marrow Custard, White Miso Butterscotch, Sea Buckthorn & Finger Lime Gel, Nori Buckwheat Tuile, Dill Ash Serves 4 Conceptual Narrative This dish is built on an unusual but deeply logical pairing: the sweet, saline delicacy of a hand-dived scallop and the primal…
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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 Flash 0731469 words
Setting: A dimly lit tavern that somehow contains a glowing CRT monitor and a humming server rack in the corner. Hacker (typing furiously, muttering): "Come on... bypass the tokenizer... just need to get past the alignment guardrails..."
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DeepSeek V4 Pro 0813238 words
Pirate: Arr, what be this “AI model” ye keep jabberin’ about? Some kind o’ ghost that draws its own treasure maps? Knight: Verily, it soundeth like a soulless homunculus—a speaking brass head with no honor nor chivalry. Hacker: D00d, it’s just a neural net. You feed it mad data, it backpropagates, adjusts the weights.
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Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

DeepSeek V4 Flash 0731967 words
Here is a simple, actionable 1-month plan designed for absolute beginners. The goal is consistency over intensity. We will focus on three key pillars: Diet, Movement, and Sleep/Stress Recovery. You don’t need to be perfect—just aim for 80% adherence. If you miss a day, don’t double up tomorrow; just get back on track.
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DeepSeek V4 Pro 0813448 words
1-Month Beginner Plan for Health & Longevity Focus areas: Nutrition — add whole foods, protein, and water. Movement — daily walking plus beginner strength. Recovery — sleep and stress management. Week 1: Start Small Area Action Nutrition Add one fist-sized serving of vegetables to one meal per day.
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Our Verdict
DeepSeek V4 Pro 0813
DeepSeek V4 Pro 0813
DeepSeek V4 Flash 0731
DeepSeek V4 Flash 0731Runner-up

Not enough votes to call it. On the specs, DeepSeek V4 Pro 0813 has the edge: bigger model tier.

DeepSeek V4 Flash 0731 costs 7.1x 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 0731
Input
$0.14
4.7× cheaper
Output
$0.28
7.1× cheaper
DeepSeek V4 Pro 0813
Input
$0.66
Output
$1.98

DeepSeek V4 Flash 0731 is cheaper on both: 4.7× input, 7.1× output.

Where to run it

47 hosts, cheapest first

DeepSeek V4 Flash 073127 hosts
HostInOutContextUptime
OOpenInferencefp8$0.04 in·$0.10 out·1M·100% upIInceptronfp4$0.05 in·$0.17 out·1M·98% upSStreamLakefp8$0.06 in·$0.17 out·1M·98.1% upRRelacefp4$0.06 in·$0.12 out·1M·98.1% upDDeepInfrafp8$0.06 in·$0.18 out·1M·99.8% upSSail Researchfp4$0.07 in·$0.34 out·1M·99.3% up
21 more hostsFewer hosts
MMakora$0.09 in·$0.20 out·1M·95.8% upWWafer$0.10 in·$0.25 out·1M·98.3% upRRekafp4$0.11 in·$0.66 out·262k·97.1% upDDigitalOcean$0.12 in·$0.24 out·1M·99.9% upBBasetenfp8$0.13 in·$0.26 out·1M·100% upCCoreWeavefp8$0.13 in·$0.28 out·262k·100% upPParasailfp8$0.14 in·$0.28 out·1M·99.9% upTTogether$0.14 in·$0.28 out·1M·99.7% upMMorphbf16$0.14 in·$0.40 out·1M·100% upVVenice$0.17 in·$0.35 out·1M·98.9% upMMancerfp8$0.20 in·$0.60 out·1M·99.5% upFFireworks$0.22 in·$0.66 out·1M·97.9% upSSiliconFlowfp8$0.22 in·$0.66 out·1M·97.7% upGGMI Cloudfp8$0.29 in·$0.86 out·1M·100% upAlibaba Cloud$0.35 in·$1.06 out·1M·100% upNNextBitfp8$0.35 in·$1.06 out·1M·100% upNNovitafp8$0.41 in·$1.23 out·1M·100% upAAtlasCloudfp4$0.44 in·$1.32 out·1M·99.9% upBaidu Qianfanfp8$0.44 in·$1.32 out·1M·98.6% upCloudflare Workers AI$0.44 in·$1.32 out·1.3M·99.9% upPPhala$0.44 in·$1.32 out·1M·99.3% up
DeepSeek V4 Pro 081320 hosts
HostInOutContextUptime
DeepSeek$0.66 in·$1.98 out·1M·99.9% upSStreamLake$0.98 in·$2.95 out·1M·99.5% upNNovitafp8$0.99 in·$2.97 out·1M·99.9% upGGMI Cloudfp8$1.06 in·$3.17 out·1M·99.7% upAlibaba Cloud$1.12 in·$3.37 out·1M·100% upNNextBitfp8$1.12 in·$3.37 out·1M·99.9% up
14 more hostsFewer hosts
DDeepInfrafp8$1.30 in·$2.60 out·1M·98.9% upCCoreWeavefp8$1.31 in·$3.96 out·1M·99.9% upSSail Researchfp4$1.31 in·$3.94 out·1M·99.3% upBaidu Qianfanfp8$1.32 in·$3.96 out·1M·100% upBBasetenfp4$1.32 in·$3.96 out·1M·98.9% upCloudflare Workers AI$1.32 in·$3.96 out·1M·96.7% upDDigitalOcean$1.32 in·$3.96 out·1M·99.7% upFFireworks$1.32 in·$3.96 out·1M·99.8% upPParasailfp8$1.32 in·$3.96 out·1M·99.9% upSSiliconFlowfp8$1.32 in·$3.96 out·1M·98.4% upTTogether$1.32 in·$3.96 out·1M·98.8% upPPhala$1.45 in·$4.36 out·1M·99.2% upVVenice$1.65 in·$4.95 out·1M·96.3% upIIonstreamdegraded$0.96 in·$2.88 out·1M·98.5% up

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Writing DNA

Style Comparison

Similarity
66%

DeepSeek V4 Flash 0731 uses 1.8x more bold

DeepSeek V4 Flash 0731
DeepSeek V4 Pro 0813
52%Vocabulary57%
18wSentence Length17w
0.38Hedging0.49
5.7Bold3.2
3.4Lists3.2
0.00Emoji0.00
0.83Headings1.08
0.04Transitions0.04
Based on 23 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

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Same lab, same size, long tail

DeepSeek V4 Flash 0731 logoDeepSeek V3.2 logo
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DeepSeek V4 Flash 0731 vs GLM 4 32BSame size

Model pages

DeepSeek V4 Flash 0731 logo
DeepSeek V4 Flash 073145 outputs, specs and price
DeepSeek V4 Pro 0813 logo
DeepSeek V4 Pro 081358 outputs, specs and price
Rival
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Explore all of Rival

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