Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
  1. Home
  2. /
  3. Compare
  4. /
  5. DeepSeek V4 Flash 0731vsQwen3.8 Max Prime
Updated Sep 2026

DeepSeek V4 Flash 0731vsQwen3.8 Max Prime

DeepSeek V4 Flash 0731 is cheaper than Qwen3.8 Max Prime at $0.14/M vs $4/M input tokens.

DeepSeek V4 Flash 0731 and Qwen3.8 Max Prime compared across 18 shared prompts
SpecDeepSeek V4 Flash 0731Qwen3.8 Max Prime
Input price$0.14/M tokens$4/M tokens
Output price$0.28/M tokens$12/M tokens
Context window1.0M tokens1.0M tokens
WeightsOpenClosed
Free API (OpenRouter)NoNo
ReleasedJul 2026Sep 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 18 prompts both answered. Formatting stripped, words untouched.

Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

DeepSeek V4 Flash 0731287 words
Here is a simple, comforting, and deeply flavorful recipe that comes together in just 20 minutes using only 7 common pantry staples. Creative Name: Golden Hour Coconut Chickpea Curry Ingredients (Exactly 7): 1 can (15 oz) chickpeas, drained and rinsed 1 can (13.5 oz) full-fat coconut milk 1 medium yellow onion 3 cloves…
Read the full answer
Qwen3.8 Max Prime223 words
🍯 Golden Hour Noodles A sweet, savory, garlicky pasta that tastes like it took way more effort than it did. Ingredients (7) # Ingredient Amount 1 Spaghetti 8 oz (half a box) 2 Butter 3 tablespoons 3 Garlic, minced 4 cloves 4 Honey 2 tablespoons 5 Soy sauce 1 tablespoon 6 Red pepper flakes ½ teaspoon 7 Parmesan cheese…
Read the full answer

Explain Like I'm a Specific Expert

Explain how a large language model (like GPT or Claude) learns and generates text to each of these three audiences: 1. **An experienced…

DeepSeek V4 Flash 0731748 words
An experienced software engineer Think of the model as a service with one API: predict_next_token(context) -> distribution over vocabulary. During training, you run a gigantic distributed job—shard the corpus, shard the parameters, synchronize gradients—to minimize cross-entropy loss on trillions of tokens.
Read the full answer
Qwen3.8 Max Prime1,147 words
For the Software Engineer Think of it this way: you've built systems where simple rules at the node level produce emergent behavior at the system level — consensus protocols, eventual consistency, cellular automata-like patterns in distributed state machines. An LLM is a similar phenomenon at a different scale.
Read the full answer

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.
Read the full answer
Qwen3.8 Max Prime473 words
Your 1-Month Foundation Plan A simple, progressive plan built on three pillars. Each week, you add one small layer. No perfection required—just consistency. 🏃 Pillar 1: Movement Why: Even modest activity reduces all-cause mortality risk and improves mood, sleep, and energy within days.
Read the full answer

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.
Read the full answer
Qwen3.8 Max Prime1,844 words
"Petrichor" The Forest Floor After Rain Conceptual Narrative Petrichor — from the Greek petra (stone) and ichor (the fluid that flows in the veins of the gods) — is the scent produced when rain falls on dry earth.
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…

DeepSeek V4 Flash 07311,896 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
Qwen3.8 Max Prime2,943 words
The Transistor in 1920: A Counterfactual History Through 1980 Preamble: The Invention Itself The transistor's actual invention required quantum mechanical understanding of semiconductor behavior. In 1920, this theory didn't yet exist.
Read the full answer

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…

DeepSeek V4 Flash 07312,175 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
Qwen3.8 Max Prime2,007 words
48-Hour Action Plan: CEO Response to Undisclosed Safety Signal My Guiding Principle Patient safety is non-negotiable, and proactive disclosure is the only path that preserves long-term company viability.
Read the full answer
Our Verdict
DeepSeek V4 Flash 0731
DeepSeek V4 Flash 0731
Qwen3.8 Max Prime
Qwen3.8 Max Prime

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

DeepSeek V4 Flash 0731 costs 43x 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
29× cheaper
Output
$0.28
43× cheaper
Qwen3.8 Max Prime
Input
$4.00
Output
$12.00

DeepSeek V4 Flash 0731 is cheaper on both: 29× input, 43× output.

Where to run it

30 hosts, cheapest first

DeepSeek V4 Flash 073129 hosts
HostInOutContextUptime
RRelacefp4$0.03 in·$0.32 out·1M·99.8% upSSail Researchfp4$0.03 in·$0.55 out·1M·99% upSStreamLakefp8$0.05 in·$0.16 out·1M·99.6% upDDeepInfrafp8$0.06 in·$0.18 out·1M·99.8% upWWafer$0.08 in·$0.35 out·1M·100% upIInceptronfp4$0.08 in·$0.41 out·1M·99.8% up
23 more hostsFewer hosts
RReka$0.09 in·$0.53 out·262k·99.8% upMMakora$0.09 in·$0.20 out·1M·98.5% upDDigitalOcean$0.12 in·$0.24 out·1M·100% upBBasetenfp8$0.13 in·$0.26 out·1M·100% upCCoreWeavefp8$0.13 in·$0.28 out·262k·99.9% upPParasailfp8$0.14 in·$0.28 out·1M·99.6% upTTogether$0.14 in·$0.28 out·1M·98% upOOpenInferencefp8$0.14 in·$0.70 out·1M·99.2% upMMorph$0.14 in·$0.40 out·1M·99.2% upVVenice$0.17 in·$0.35 out·1M·99.6% upMMancerfp8$0.20 in·$0.60 out·1M·96% upFFireworks$0.22 in·$0.66 out·1M·98.6% upSSiliconFlowfp8$0.22 in·$0.66 out·1M·99.1% upGGMI Cloudfp8$0.29 in·$0.86 out·1M·99.9% upAlibaba Cloud$0.35 in·$1.06 out·1M·99.8% upNNextBitfp8$0.35 in·$1.06 out·1M·99.9% upNNovitafp8$0.41 in·$1.23 out·1M·100% upAAtlasCloudfp4$0.44 in·$1.32 out·1M·97.6% upBaidu Qianfanfp8$0.44 in·$1.32 out·1M·99.9% upCloudflare Workers AI$0.44 in·$1.32 out·1.3M·100% upPPhala$0.44 in·$1.32 out·1M·99.3% upCoheredegraded$0.14 in·$0.28 out·1M·99.3% upNNebiusfp8degraded$0.14 in·$0.28 out·1M·86.3% up
Qwen3.8 Max Prime1 host
HostInOutContextUptime
Alibaba Cloud$4.00 in·$12.00 out·1M·99.9% up

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

Research

What we learned reading every model

FAQ

Common questions

DeepSeek V4 Flash 0731 is developed by DeepSeek while Qwen3.8 Max Prime is developed by Qwen. DeepSeek V4 Flash 0731 has a 1.0M token context window vs Qwen3.8 Max Prime's 1.0M. You can compare their actual outputs across 18 challenges on Rival to see how they differ in practice.

It depends on your use case. DeepSeek V4 Flash 0731 and Qwen3.8 Max Prime each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 18 challenges so you can judge which fits your needs best.

DeepSeek V4 Flash 0731 costs $0.14/M input tokens and Qwen3.8 Max Prime costs $4/M input tokens. DeepSeek V4 Flash 0731 is $3.86/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 0731 and Qwen3.8 Max Prime 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

More comparisons

Against the newest arrivals

DeepSeek V4 Flash 0731 logoSolar Mini 4 logo
DeepSeek V4 Flash 0731 vs Solar Mini 4Landed Sep 2026
Qwen3.8 Max Prime logoGLM 5.3 Prime logo
Qwen3.8 Max Prime vs GLM 5.3 PrimeLanded Sep 2026
DeepSeek V4 Flash 0731 logoQwen3.8 Omni Flash logo
DeepSeek V4 Flash 0731 vs Qwen3.8 Omni FlashLanded Sep 2026
Qwen3.8 Max Prime logoCommand A+ logo
Qwen3.8 Max Prime vs Command A+Landed Sep 2026
DeepSeek V4 Flash 0731 logoClaude Opus 5.5 logo
DeepSeek V4 Flash 0731 vs Claude Opus 5.5Landed Sep 2026
Qwen3.8 Max Prime logoGPT-6 Luna Pro logo
Qwen3.8 Max Prime vs GPT-6 Luna ProLanded Sep 2026
DeepSeek V4 Flash 0731 logoGPT-6 Sol Pro logo
DeepSeek V4 Flash 0731 vs GPT-6 Sol ProLanded Sep 2026
Qwen3.8 Max Prime logoGPT-6 Luna logo
Qwen3.8 Max Prime vs GPT-6 LunaLanded Sep 2026

Same lab, same size, long tail

DeepSeek V4 Flash 0731 logoDeepSeek V4 Flash Vision Exp logo
DeepSeek V4 Flash 0731 vs DeepSeek V4 Flash Vision ExpSame lab
DeepSeek V4 Flash 0731 logoDeepSeek V4.1 Flash logo
DeepSeek V4 Flash 0731 vs DeepSeek V4.1 FlashSame lab
Qwen3.8 Max Prime logoQwen3.8 Omni Flash logo
Qwen3.8 Max Prime vs Qwen3.8 Omni FlashSame lab
Qwen3.8 Max Prime logoQwen3.7 Flash logo
Qwen3.8 Max Prime vs Qwen3.7 FlashSame lab
DeepSeek V4 Flash 0731 logoQwen3 Next 80B A3B Instruct logo
DeepSeek V4 Flash 0731 vs Qwen3 Next 80B A3B InstructSame size
DeepSeek V4 Flash 0731 logoQwen3 Next 80B A3B Thinking logo
DeepSeek V4 Flash 0731 vs Qwen3 Next 80B A3B ThinkingSame size
DeepSeek V4 Flash 0731 logoQwen3.5 122B A10B logo
DeepSeek V4 Flash 0731 vs Qwen3.5 122B A10BSame size
DeepSeek V4 Flash 0731 logoQwen3.5 27B logo
DeepSeek V4 Flash 0731 vs Qwen3.5 27BCross-provider

Model pages

DeepSeek V4 Flash 0731 logo
DeepSeek V4 Flash 073145 outputs, specs and price
Qwen3.8 Max Prime logo
Qwen3.8 Max Prime19 outputs, specs and price
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Default Index
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed