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. OpenAI o3vsQwen3.8 Flash
Updated Aug 2026

OpenAI o3vsQwen3.8 Flash

Qwen3.8 Flash is cheaper than OpenAI o3 at $0.15/M vs $10/M input tokens.

OpenAI o3 and Qwen3.8 Flash compared across 8 shared prompts
SpecOpenAI o3Qwen3.8 Flash
Input price$10/M tokens$0.15/M tokens
Output price$40/M tokens$0.47/M tokens
Context window—1.0M tokens
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedApr 2025Aug 2026
Side by side

Same prompt, both answers

Opening lines from 2 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…

OpenAI o3279 words
Golden Peanut Butter Oat Bars A chewy-crisp, sweet-salted snack bar you can whip up with nothing but pantry staples. Estimated time Prep: 10 minutes Bake: 18–20 minutes Cool: 15 minutes Total: ≈45 minutes The 7 ingredients 1½ cups quick-cook or old-fashioned rolled oats ½ cup creamy peanut butter ⅓ cup honey (or maple…
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…

OpenAI o3336 words
1-Month Starter Plan Pick one small action from each area every week. Add the next step when the first feels easy. Food Week Do this 1 Add one fruit or veg to every meal. Drink one extra glass of water. 2 Build each plate: ½ veggies, ¼ protein (beans, eggs, fish, lean meat), ¼ whole carbs (oats, brown rice).
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
Our Verdict
OpenAI o3
OpenAI o3
Qwen3.8 Flash
Qwen3.8 FlashRunner-up

Not enough votes to call it. On the specs, OpenAI o3 has the edge: bigger model tier, major provider backing.

Qwen3.8 Flash costs 85x less per token.

Too close to call
API pricing

Cost per 1M tokens

OpenAI o3
Input
$10.00
Output
$40.00
Qwen3.8 Flash
Input
$0.15
67× cheaper
Output
$0.47
85× cheaper

Qwen3.8 Flash is cheaper on both: 67× input, 85× output.

Where to run it

2 hosts

OpenAI o31 host
HostInOutContextUptime
OpenAI$2.00 in·$8.00 out·200k·100% 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

OpenAI o3 is developed by OpenAI while Qwen3.8 Flash is developed by Qwen. You can compare their actual outputs across 8 challenges on Rival to see how they differ in practice.

It depends on your use case. OpenAI o3 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.

OpenAI o3 costs $10/M input tokens and Qwen3.8 Flash costs $0.15/M input tokens. Qwen3.8 Flash is $9.85/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 OpenAI o3 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.

Keep exploring

More comparisons

Against the newest arrivals

OpenAI o3 logoDeepSeek V4 Flash Vision Exp logo
OpenAI o3 vs DeepSeek V4 Flash Vision ExpLanded Sep 2026
Qwen3.8 Flash logoSolar Pro 4 logo
Qwen3.8 Flash vs Solar Pro 4Landed Sep 2026
OpenAI o3 logoHy3 logo
OpenAI o3 vs Hy3Landed Sep 2026
Qwen3.8 Flash logoQwen3.7 Flash logo
Qwen3.8 Flash vs Qwen3.7 FlashLanded Sep 2026
OpenAI o3 logoLing 3.0 Flash logo
OpenAI o3 vs Ling 3.0 FlashLanded Sep 2026
Qwen3.8 Flash logoMuse Glimmer 30B logo
Qwen3.8 Flash vs Muse Glimmer 30BLanded Sep 2026
OpenAI o3 logoGLM 5.3 logo
OpenAI o3 vs GLM 5.3Landed Sep 2026
Qwen3.8 Flash logoTernary Bonsai 2 27B logo
Qwen3.8 Flash vs Ternary Bonsai 2 27BLanded Sep 2026

Same lab, same size, long tail

OpenAI o3 logoOpenAI o4-mini logo
OpenAI o3 vs OpenAI o4-miniVersion compare
OpenAI o3 logoGPT-6 Astra Pro logo
OpenAI o3 vs GPT-6 Astra ProSame lab
Qwen3.8 Flash logoQwen3.8 Max (0902) logo
Qwen3.8 Flash vs Qwen3.8 Max (0902)Same lab
Qwen3.8 Flash logoQwen3.8 2.4T A95B logo
Qwen3.8 Flash vs Qwen3.8 2.4T A95BSame 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
Qwen3.8 Flash logoQwen3 30B A3B Instruct 2507 logo
Qwen3.8 Flash vs Qwen3 30B A3B Instruct 2507Same lab

Model pages

OpenAI o3 logo
OpenAI o358 outputs, specs and price
Qwen3.8 Flash logo
Qwen3.8 Flash8 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