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  5. DeepSeek V4 Pro 0813vsQwen3.8 Flash
Updated Aug 2026

DeepSeek V4 Pro 0813vsQwen3.8 Flash

Qwen3.8 Flash is cheaper than DeepSeek V4 Pro 0813 at $0.15/M vs $0.66/M input tokens.

DeepSeek V4 Pro 0813 and Qwen3.8 Flash compared across 8 shared prompts
SpecDeepSeek V4 Pro 0813Qwen3.8 Flash
Input price$0.66/M tokens$0.15/M tokens
Output price$1.98/M tokens$0.47/M tokens
Context window1.0M tokens1.0M tokens
WeightsOpenClosed
Free API (OpenRouter)NoNo
ReleasedAug 2026Aug 2026
Side by side

Same prompt, both answers

Opening lines from 3 of the 8 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 Pro 0813152 words
Golden Hour Crispy Chickpeas Serves 2–3 as a snack or side Prep: 5 min Cook: 25–30 min Ingredients (7 common pantry items) 1 can (15 oz) chickpeas, drained and rinsed 1 tablespoon olive oil ¼ cup grated Parmesan cheese ½ teaspoon garlic powder ½ teaspoon smoked paprika ¼ teaspoon salt ¼ teaspoon black pepper…
Read the full answer
Qwen3.8 Flash147 words
Moon Halo Cookies A soft, golden sugar cookie with crisp edges and a tender center—made with just 7 pantry staples. Prep time: 10 minutes Cook time: 10 minutes Total time: 20 minutes Makes: About 16 cookies Ingredients 1/2 cup butter, softened 3/4 cup sugar 1 egg 1 teaspoon vanilla extract 1 1/2 cups all-purpose flour…
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 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.
Read the full answer
Qwen3.8 Flash368 words
1-Month Beginner Health & Longevity Plan Focus areas: Nutrition, Movement, Sleep Week 1: Build the basics Nutrition Add 1 serving of vegetables to 2 meals per day. Drink water with each meal. Choose protein at most meals: eggs, beans, tofu, chicken, fish, yogurt. Movement Walk 10–15 minutes daily.
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 Pro 0813958 words
For the experienced software engineer Think of an LLM as a function with billions of parameters that maps a sequence of tokens to a probability distribution over the next token.
Read the full answer
Qwen3.8 Flash983 words
For an experienced software engineer Training a large language model is not “just” making it guess the next word in isolation. It is fitting an enormous parameterized function to predict the next token conditioned on all previous tokens in a sequence.
Read the full answer
Our Verdict
DeepSeek V4 Pro 0813
DeepSeek V4 Pro 0813
Qwen3.8 Flash
Qwen3.8 FlashRunner-up

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

Qwen3.8 Flash costs 4.2x less per token.

Too close to call
API pricing

Cost per 1M tokens

DeepSeek V4 Pro 0813
Input
$0.66
Output
$1.98
Qwen3.8 Flash
Input
$0.15
4.4× cheaper
Output
$0.47
4.2× cheaper

Qwen3.8 Flash is cheaper on both: 4.4× input, 4.2× output.

Where to run it

23 hosts, cheapest first

DeepSeek V4 Pro 081322 hosts
HostInOutContextUptime
SSail Researchfp4$0.40 in·$4.30 out·1M·99.5% upSStreamLake$0.54 in·$1.61 out·1M·99.8% upBaidu Qianfanfp8$0.54 in·$1.62 out·1M·100% upWWafer$0.58 in·$2.90 out·1M·99.1% upAlibaba Cloud$0.58 in·$1.74 out·1M·100% upIIonstream$0.62 in·$2.88 out·1M·99.5% up
16 more hostsFewer hosts
DeepSeek$0.66 in·$1.98 out·1M·100% upNNovitafp8$0.99 in·$2.97 out·1M·100% upGGMI Cloudfp8$1.06 in·$3.17 out·1M·99.9% upNNextBitfp8$1.12 in·$3.37 out·1M·96.1% upDDeepInfrafp8$1.30 in·$2.60 out·1M·99.4% upCCoreWeavefp8$1.31 in·$3.96 out·1M·97% upAAtlasCloudfp8$1.32 in·$3.96 out·1M·99.8% upCloudflare Workers AI$1.32 in·$3.96 out·1M·97.6% upDDigitalOcean$1.32 in·$3.96 out·1M·99.8% upFFireworks$1.32 in·$3.96 out·1M·99.4% upPParasailfp8$1.32 in·$3.96 out·1M·99.6% upSSiliconFlowfp8$1.32 in·$3.96 out·1M·97.8% upTTogether$1.32 in·$3.96 out·1M·99.8% upPPhala$1.45 in·$4.36 out·1M·99.9% upVVenice$1.65 in·$4.95 out·1M·94.5% upBBasetenfp4degraded$1.32 in·$3.96 out·1M·95.1% up
Qwen3.8 Flash1 host
HostInOutContextUptime
Alibaba Cloud$0.15 in·$0.47 out·1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Research

What we learned reading every model

FAQ

Common questions

DeepSeek V4 Pro 0813 is developed by DeepSeek while Qwen3.8 Flash is developed by Qwen. DeepSeek V4 Pro 0813 has a 1.0M token context window vs Qwen3.8 Flash's 1.0M. You can compare their actual outputs across 8 challenges on Rival to see how they differ in practice.

It depends on your use case. DeepSeek V4 Pro 0813 and Qwen3.8 Flash each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 8 challenges so you can judge which fits your needs best.

DeepSeek V4 Pro 0813 costs $0.66/M input tokens and Qwen3.8 Flash costs $0.15/M input tokens. Qwen3.8 Flash is $0.51/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 Pro 0813 and Qwen3.8 Flash 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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Same lab, same size, long tail

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Model pages

DeepSeek V4 Pro 0813 logo
DeepSeek V4 Pro 081358 outputs, specs and price
Qwen3.8 Flash logo
Qwen3.8 Flash8 outputs, specs and price
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