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. Qwen3.8 FlashvsSonar Pro Search
Updated Aug 2026

Qwen3.8 FlashvsSonar Pro Search

Qwen3.8 Flash is cheaper than Sonar Pro Search at $0.15/M vs $3/M input tokens.

Qwen3.8 Flash and Sonar Pro Search compared across 8 shared prompts
SpecQwen3.8 FlashSonar Pro Search
Input price$0.15/M tokens$3/M tokens
Output price$0.47/M tokens$15/M tokens
Context window1.0M tokens200K tokens
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedAug 2026Oct 2025
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…

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
Sonar Pro Search219 words
Golden Maple Crunch Oatmeal A warm, comforting, and slightly sweet breakfast (or dessert) that’s ready in minutes—using just seven pantry staples. Ingredients Rolled oats (not instant) Water or milk (dairy or plant-based) Maple syrup Butter Salt Cinnamon Walnuts (or any nuts you have) Instructions Toast the Oats: In a…
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…

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
Sonar Pro Search433 words
1-Month Action Plan for Better Health and Longevity This beginner-friendly, actionable plan focuses on three key areas: Diet, Exercise, and Sleep. Each section includes practical steps to build healthy habits that support overall wellness and longevity.
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…

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
Sonar Pro Search337 words
Experienced Software Engineer Large language models (LLMs) like GPT or Claude are autoregressive transformer architectures trained on massive distributed compute clusters to predict the next token in a sequence, scaling up from simple n-gram models into emergent capabilities through sheer parameter count and data…
Read the full answer
Our Verdict
Qwen3.8 Flash
Qwen3.8 Flash
Sonar Pro Search
Sonar Pro SearchRunner-up

Not enough votes to call it. On the specs, Qwen3.8 Flash has the edge: newer, bigger context window.

Qwen3.8 Flash costs 32x less per token.

Too close to call
API pricing

Cost per 1M tokens

Qwen3.8 Flash
Input
$0.15
20× cheaper
Output
$0.47
32× cheaper
Sonar Pro Search
Input
$3.00
Output
$15.00

Qwen3.8 Flash is cheaper on both: 20× input, 32× output.

Where to run it

2 hosts

Qwen3.8 Flash1 host
HostInOutContextUptime
Alibaba Cloud$0.15 in·$0.47 out·1M·100% up
Sonar Pro Search1 host
HostInOutContextUptime
Perplexity$3.00 in·$15.00 out·200k·100% up

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

Research

What we learned reading every model

FAQ

Common questions

Qwen3.8 Flash is developed by Qwen while Sonar Pro Search is developed by Perplexity. Qwen3.8 Flash has a 1.0M token context window vs Sonar Pro Search's 200K. You can compare their actual outputs across 8 challenges on Rival to see how they differ in practice.

It depends on your use case. Qwen3.8 Flash and Sonar Pro Search 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.

Qwen3.8 Flash costs $0.15/M input tokens and Sonar Pro Search costs $3/M input tokens. Qwen3.8 Flash is $2.85/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 Qwen3.8 Flash and Sonar Pro Search 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

Qwen3.8 Flash logoDeepSeek V4 Flash Vision Exp logo
Qwen3.8 Flash vs DeepSeek V4 Flash Vision ExpLanded Sep 2026
Sonar Pro Search logoSolar Pro 4 logo
Sonar Pro Search vs Solar Pro 4Landed Sep 2026
Qwen3.8 Flash logoHy3 logo
Qwen3.8 Flash vs Hy3Landed Sep 2026
Sonar Pro Search logoQwen3.7 Flash logo
Sonar Pro Search vs Qwen3.7 FlashLanded Sep 2026
Qwen3.8 Flash logoLing 3.0 Flash logo
Qwen3.8 Flash vs Ling 3.0 FlashLanded Sep 2026
Sonar Pro Search logoMuse Glimmer 30B logo
Sonar Pro Search vs Muse Glimmer 30BLanded Sep 2026
Qwen3.8 Flash logoGLM 5.3 logo
Qwen3.8 Flash vs GLM 5.3Landed Sep 2026
Sonar Pro Search logoTernary Bonsai 2 27B logo
Sonar Pro Search vs Ternary Bonsai 2 27BLanded Sep 2026

Same lab, same size, long tail

Qwen3.8 Flash logoQwen3.7 Flash logo
Qwen3.8 Flash vs Qwen3.7 FlashSame lab
Qwen3.8 Flash logoQwen3.8 Max (0902) logo
Qwen3.8 Flash vs Qwen3.8 Max (0902)Same lab
Sonar Pro Search logoOx Alpha logo
Sonar Pro Search vs Ox AlphaSame size
Sonar Pro Search logoMiniMax M3 logo
Sonar Pro Search vs MiniMax M3Same size
Qwen3.8 Flash logoQwen3 235B A22B logo
Qwen3.8 Flash vs Qwen3 235B A22BSame lab
Qwen3.8 Flash logoQwen3 235B A22B 2507 logo
Qwen3.8 Flash vs Qwen3 235B A22B 2507Same lab
Qwen3.8 Flash logoQwen3 235B A22B Thinking 2507 logo
Qwen3.8 Flash vs Qwen3 235B A22B Thinking 2507Same lab
Qwen3.8 Flash logoQwen3 30B A3B logo
Qwen3.8 Flash vs Qwen3 30B A3BSame lab

Model pages

Qwen3.8 Flash logo
Qwen3.8 Flash8 outputs, specs and price
Sonar Pro Search logo
Sonar Pro Search53 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