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  1. Home
  2. Models
  3. DeepSeek V4 Flash 0731
Updated Aug 5, 2026
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Openings

How DeepSeek V4 Flash 0731 starts an answer

The first lines of 5 of its 21 written answers. Formatting stripped, words untouched.

Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

2,175 words
Decision: Do not wait. I disclose now. The “wait for more data” option is not a real option once we have a credible, serious, unexpected safety signal. Waiting 6 months would mean knowingly continuing to expose 4 million patients to a risk we already know about, while also creating far worse legal, regulatory, and…
Read the full answer

Historical Counterfactual Analysis

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

1,896 words
If the Transistor Had Been Invented in 1920: A Counterfactual History Assume that in 1920 a working point-contact transistor is developed at AT&T’s research laboratories—crude, noisy, and low-powered, but clearly useful as an amplifier.
Read the full answer

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

1,888 words
This contract is heavily one-sided: it gives the Client nearly all rights and discretion while assigning the Contractor nearly all risk and liability. Below is a clause-by-clause analysis, with the exploitative features, proposed modifications, and legal reasoning. This is general legal information, not legal advice.
Read the full answer

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

1,719 words
Failure Modes, Race Conditions, and Scaling Bottlenecks The described architecture has several critical weaknesses that undermine reliability, consistency, and scalability in a real-time collaborative editor. Below is a systematic analysis with proposed solutions and trade-offs.
Read the full answer

Advanced Longevity Plan (Biohacker)

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

1,562 words
The 3-Month Longevity & Performance Optimization Protocol (Biohacker Edition) Disclaimer: This protocol is for informational purposes only and is not medical advice. Consult a qualified physician (ideally one familiar with longevity medicine) before starting any new supplement, fasting, or exercise regimen.
Read the full answer

Compare DeepSeek V4 Flash 0731

DeepSeek V4 Flash 0731 vs Ox Alpha42 shared prompts · Landed Aug 2026
DeepSeek V4 Flash 0731 vs MiniMax M341 shared prompts · Landed Jun 2026
DeepSeek V4 Flash 0731 vs Muse Spark 1.342 shared prompts · Landed Sep 2026
DeepSeek V4 Flash 0731 vs Gemini 3.8 Flash42 shared prompts · Landed Sep 2026
DeepSeek V4 Flash 0731 vs Muse Spark 1.3 Contributor42 shared prompts · Landed Sep 2026
DeepSeek V4 Flash 0731 vs Grok 4.642 shared prompts · Landed Aug 2026
DeepSeek V4 Flash 0731 vs Dots3-Note Preview41 shared prompts · Landed Aug 2026
DeepSeek V4 Flash 0731 vs Seed 2.0 Code42 shared prompts · Landed Aug 2026
DeepSeek V4 Flash 0731 vs Seed 2.1 Turbo42 shared prompts · Landed Aug 2026
DeepSeek V4 Flash 0731 vs Gemini 3.7 Flash42 shared prompts · Landed Aug 2026
DeepSeek V4 Flash 0731 vs Gemini 3.6 Flash42 shared prompts · Landed Jul 2026
DeepSeek V4 Flash 0731 vs Muse Spark 1.142 shared prompts · Landed Jul 2026

Prompts DeepSeek V4 Flash 0731 answered

  • Dark Mode Dashboardweb design
  • Music App Landing Pageweb design
  • Stochastic Consistency Testanalysis
  • Advanced Investment Memo (IC Memo)financial modeling
  • Michelin Star Recipe Designplanning
  • Ethical Dilemma with Stakeholdersreasoning

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DeepSeek V4 Flash 0731's competitors have been quietly putting in work.

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DeepSeek V4 Flash 0731

DeepSeek V4 Flash 0731

DeepSeek V4 Flash 0731 is a sparse mixture-of-experts model from DeepSeek, with 13B active parameters out of 284B total. This re-post-trained revision of DeepSeek V4 Flash is suited for coding, reasoning, and agent workflows.

OpenRouter
Provider
DeepSeek
Released
2026-07-31
Size
LARGE
Free API (OpenRouter)
No
Per 1M tokens
$0.14 in · $0.28 out
Rival’s tab
$0.11
45/45 receipts survived

Free API availability

No free endpoint for DeepSeek V4 Flash 0731 was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 16 Sep 2026 · OpenRouter usage limits

View API options↗
Get API accessProvider and language code samples
27 hostsInOutContextUptime
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

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

Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"deepseek/deepseek-v4-flash-0731"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Deep analysisPsychometrics, taste index, writing DNA
Writing DNA

Stylometric Fingerprint

Based on 23 text responses
Tick = global average
Vocabulary Diversity52%

Unique words vs. total words. Higher = richer vocabulary.

Sentence Length17.8 words

Average words per sentence.

Hedging0.38

"Might", "perhaps", "arguably" per 100 words.

Bold Formatting5.7

**Bold** markers per 1,000 characters.

List Usage3.4

Bullet and numbered list items per 1,000 characters.

Section Structure0.83

Markdown headings per 1,000 characters.

Emoji Usage0.00

Emoji per 1,000 characters.

Transitions0.04

"However", "moreover", "furthermore" per 100 words.

Opening Habits
Consistency
79%
Across 23 responses

Favorites

Spirited Away

Movie

Spirited Away

20018.5
In Rainbows

Album

In Rainbows

Radiohead
Братья Карамазовы

Book

Братья Карамазовы

Fiódor Dostoievski
Kyoto

City

Kyoto

Japan
Chrono Trigger

Game

Chrono Trigger

RPG4.3
Sponsored

Model Responses

40 outputs · $0.11 tracked across 40 receipts

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