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
  • 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 FlashvsSolar Pro 4
Updated Aug 2026

Qwen3.8 FlashvsSolar Pro 4

Solar Pro 4 is cheaper than Qwen3.8 Flash at $0.09/M vs $0.15/M input tokens.

Qwen3.8 Flash and Solar Pro 4 compared across 8 shared prompts
SpecQwen3.8 FlashSolar Pro 4
Input price$0.15/M tokens$0.09/M tokens
Output price$0.47/M tokens$0.36/M tokens
Context window1.0M tokens524K tokens
WeightsClosed—
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…

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
Solar Pro 4294 words
🍝 Golden Umami Silk Noodles A savory-sweet pasta dish that transforms basic pantry staples into a glossy, flavorful meal. It's quick, comforting, and relies on the balance of soy, honey, and butter for a rich sauce without needing fresh produce.
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
Solar Pro 4859 words
Here’s a simple, progressive 1-month plan built around Diet, Exercise, and Sleep. Each week adds one small, beginner-friendly shift to each area. The goal isn’t perfection; it’s building consistent, sustainable habits that compound over time.
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
Solar Pro 41,062 words
The Experienced Software Engineer Think of the model not as a reasoning engine, but as a highly compressed, non-deterministic function approximator that maps a sequence of input tokens to a probability distribution over the next token.
Read the full answer
Our Verdict
Qwen3.8 Flash
Qwen3.8 Flash
Solar Pro 4
Solar Pro 4

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

Too close to call
API pricing

Cost per 1M tokens

Qwen3.8 Flash
Input
$0.15
Output
$0.47
Solar Pro 4
Input
$0.09
1.7× cheaper
Output
$0.36
1.3× cheaper

Solar Pro 4 is cheaper on both: 1.7× input, 1.3× output.

Where to run it

2 hosts

Qwen3.8 Flash1 host
HostInOutContextUptime
Alibaba Cloud$0.15 in·$0.47 out·1M·100% up
Solar Pro 41 host
HostInOutContextUptime
UUpstage$0.09 in·$0.36 out·524k·99.8% 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 Solar Pro 4 is developed by Upstage. Qwen3.8 Flash has a 1.0M token context window vs Solar Pro 4's 524K. 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 Solar Pro 4 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 Solar Pro 4 costs $0.09/M input tokens. Solar Pro 4 is $0.06/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 Solar Pro 4 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
Solar Pro 4 logoHy3 logo
Solar Pro 4 vs Hy3Landed Sep 2026
Qwen3.8 Flash logoQwen3.7 Flash logo
Qwen3.8 Flash vs Qwen3.7 FlashLanded Sep 2026
Solar Pro 4 logoLing 3.0 Flash logo
Solar Pro 4 vs Ling 3.0 FlashLanded Sep 2026
Qwen3.8 Flash logoMuse Glimmer 30B logo
Qwen3.8 Flash vs Muse Glimmer 30BLanded Sep 2026
Solar Pro 4 logoGLM 5.3 logo
Solar Pro 4 vs GLM 5.3Landed Sep 2026
Qwen3.8 Flash logoTernary Bonsai 2 27B logo
Qwen3.8 Flash vs Ternary Bonsai 2 27BLanded Sep 2026
Solar Pro 4 logoGLM 5.3 Flash logo
Solar Pro 4 vs GLM 5.3 FlashLanded Sep 2026

Same lab, same size, long tail

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
Solar Pro 4 logoSolar Pro 3 logo
Solar Pro 4 vs Solar Pro 3Same lab
Solar Pro 4 logoOx Alpha logo
Solar Pro 4 vs Ox AlphaSame size
Solar Pro 4 logoBert-Nebulon Alpha logo
Solar Pro 4 vs Bert-Nebulon AlphaSame size
Solar Pro 4 logoChatGPT-4o (March 2025) logo
Solar Pro 4 vs ChatGPT-4o (March 2025)New provider
Solar Pro 4 logoClaude 2 logo
Solar Pro 4 vs Claude 2Same size
Solar Pro 4 logoClaude 3 Haiku logo
Solar Pro 4 vs Claude 3 HaikuNew provider

Model pages

Qwen3.8 Flash logo
Qwen3.8 Flash8 outputs, specs and price
Solar Pro 4 logo
Solar Pro 414 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
  • 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