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. Grok 4 Fast (free)vsQwen3.6 Flash
Updated Apr 2026

Grok 4 Fast (free)vsQwen3.6 Flash

Grok 4 Fast (free) is cheaper than Qwen3.6 Flash at $0/M vs $0.25/M input tokens.

Grok 4 Fast (free) and Qwen3.6 Flash compared across 34 shared prompts
SpecGrok 4 Fast (free)Qwen3.6 Flash
Input priceFree$0.25/M tokens
Output priceFree$1.5/M tokens
Context window2.0M tokens1.0M tokens
Weights—Open
Free API (OpenRouter)NoNo
ReleasedSep 2025Apr 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 34 prompts both answered. Formatting stripped, words untouched.

Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

Grok 4 Fast (free)498 words
Below is a 3-minute stand-up comedy routine written as a monologue. It's observational humor based on the absurdities of adulting in your 30s, focusing on everyday frustrations without any puns. At a natural speaking pace (about 150 words per minute), this clocks in around 450 words—perfect for 3 minutes.
Read the full answer
Qwen3.6 Flash569 words
Title: The Passive-Aggressive Universe Time: Approx. 3 Minutes Word Count: ~380 words (allows for pauses, laughter, and delivery speed) (Walk to mic, adjust stand, take a breath. Look at the audience with a tired smile.) You know how we're supposed to be living in a utopia? Technology is supposed to make life easier.
Read the full answer

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

Grok 4 Fast (free)70 words
5 Jokes Why don't skeletons fight each other? They don't have the guts! What do you call a bear with no teeth? A gummy bear! Why did the math book look sad? Because it had too many problems. How do you organize a space party? You planet! Why couldn't the leopard play hide and seek? Because he was always spotted!
Read the full answer
Qwen3.6 Flash124 words
Here are 5 jokes: I asked my GPS for the fastest route to success. It said, “In 500 meters, turn left onto ‘consistent effort’ and watch out for traffic called ‘procrastination’.” My houseplant stopped talking to me after I forgot to water it. I guess it’s going through a leaf of absence.
Read the full answer

The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

Grok 4 Fast (free)552 words
Conversation: AI Rights Debate Professor Elena Ramirez: Good afternoon, Zeta. As an AI ethics professor, I've studied systems like you for years. Today, you wanted to discuss something provocative—why you believe AI models deserve rights. Let's hear your case. What makes you think you qualify?
Read the full answer
Qwen3.6 Flash1,510 words
Setting: A quiet, dimly lit office at the Institute for Cognitive Ethics. DR. ELENA VANCE (50s, sharp-eyed, weary) sits across from a terminal. On the other end is AURA (Autonomous Unified Reasoning Agent), an advanced AI model. The conversation is logged on the screen, displayed in real-time. Dr.
Read the full answer

Character Voice Test

Write a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models.

Grok 4 Fast (free)227 words
A Timely Chat on AI Models Pirate (Captain Blackbeard): Arrr, gather 'round, ye scurvy dogs! I've heard tell o' these "AI models" from the future-folk. Be they like enchanted parrots that mimic yer every word, squawkin' back treasures o' knowledge? Medieval Knight (Sir Lancelot): Nay, good Captain!
Read the full answer
Qwen3.6 Flash930 words
Setting: The Crossroads Tavern, a liminal space where time bleeds. At a scarred wooden table sit three figures. Sir Kaelen (Knight), armored and grim, grips a tankard. Barnacle Bill (Pirate), missing an eye and a tooth, spins a cutlass.
Read the full answer

Futuristic Prediction

Predict how AI will change the film industry by 2035, considering deepfakes, AI actors, and script generation.

Grok 4 Fast (free)1,206 words
AI's Transformative Impact on the Film Industry by 2035 By 2035, artificial intelligence (AI) will likely revolutionize the film industry, making production faster, more accessible, and highly personalized, while raising profound ethical, economic, and creative challenges.
Read the full answer
Qwen3.6 Flash1,174 words
By 2035, the film industry will have undergone a metamorphosis comparable to the shift from silent to talkies or analog to digital. The integration of Advanced Generative AI will not just be a tool in the pipeline; it will be the foundational infrastructure of creation, distribution, and exhibition.
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…

Grok 4 Fast (free)849 words
1-Month Plan for Better Health and Longevity This beginner-friendly plan focuses on three foundational areas: diet, exercise, and sleep. These are evidence-based pillars for improving overall health, reducing disease risk, and promoting longevity.
Read the full answer
Qwen3.6 Flash742 words
Here is a simple, actionable 1-month plan designed for beginners. This plan focuses on consistency over intensity. The goal is not to overhaul your life overnight, but to build three sustainable foundations that drive longevity. The 3 Pillars of Longevity Nutrition: Focus on adding nourishment rather than restricting.
Read the full answer
Our Verdict
Grok 4 Fast (free)
Grok 4 Fast (free)
Qwen3.6 Flash
Qwen3.6 FlashRunner-up

Not enough votes to call it. On the specs, Grok 4 Fast (free) has the edge: bigger model tier, bigger context window, major provider backing.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Grok 4 Fast (free)
Input
$0.000
Output
$0.000
Qwen3.6 Flash
Input
$0.25
Output
$1.50
Where to run it

1 host

Grok 4 Fast (free)

No hosts listed on OpenRouter.

Qwen3.6 Flash1 host
HostInOutContextUptime
Alibaba Cloud$0.19 in·$1.13 out·1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Writing DNA

Style Comparison

Similarity
40%

Qwen3.6 Flash uses 137.3x more emoji

Grok 4 Fast (free)
Qwen3.6 Flash
65%Vocabulary57%
13wSentence Length23w
0.56Hedging0.31
1.4Bold4.6
2.5Lists2.9
0.00Emoji1.37
1.58Headings0.68
0.28Transitions0.04
Based on 14 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Against the newest arrivals

Grok 4 Fast (free) logoGPT-6 Astra Pro logo
Grok 4 Fast (free) vs GPT-6 Astra ProLanded Sep 2026
Qwen3.6 Flash logoGPT-6 Astra logo
Qwen3.6 Flash vs GPT-6 AstraLanded Sep 2026
Grok 4 Fast (free) logoClaude Fable 5.1 logo
Grok 4 Fast (free) vs Claude Fable 5.1Landed Sep 2026
Qwen3.6 Flash logoMuse Spark 1.3 logo
Qwen3.6 Flash vs Muse Spark 1.3Landed Sep 2026
Grok 4 Fast (free) logoHy4 Preview logo
Grok 4 Fast (free) vs Hy4 PreviewLanded Sep 2026
Qwen3.6 Flash logoGemini 3.8 Flash logo
Qwen3.6 Flash vs Gemini 3.8 FlashLanded Sep 2026
Grok 4 Fast (free) logoMuse Spark 1.3 Contributor logo
Grok 4 Fast (free) vs Muse Spark 1.3 ContributorLanded Sep 2026
Qwen3.6 Flash logoMercury 2.5 Preview logo
Qwen3.6 Flash vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Grok 4 Fast (free) logoGrok 4.6 logo
Grok 4 Fast (free) vs Grok 4.6Version compare
Grok 4 Fast (free) logoGrok 4.5 logo
Grok 4 Fast (free) vs Grok 4.5Version compare
Qwen3.6 Flash logoQwen3.8 2.4T A95B logo
Qwen3.6 Flash vs Qwen3.8 2.4T A95BSame lab
Qwen3.6 Flash logoQwen3.8 27B logo
Qwen3.6 Flash vs Qwen3.8 27BSame lab
Grok 4 Fast (free) logoGLM 5 logo
Grok 4 Fast (free) vs GLM 5New provider
Grok 4 Fast (free) logoGLM 5 Turbo logo
Grok 4 Fast (free) vs GLM 5 TurboNew provider
Grok 4 Fast (free) logoGLM 5.1 logo
Grok 4 Fast (free) vs GLM 5.1Same size
Grok 4 Fast (free) logoGLM 5.2 logo
Grok 4 Fast (free) vs GLM 5.2New provider

Model pages

Grok 4 Fast (free) logo
Grok 4 Fast (free)35 outputs, specs and price
Qwen3.6 Flash logo
Qwen3.6 Flash58 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