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  5. Grok 4.1 FastvsQwen3.8 2.4T A95B
Updated Aug 2026

Grok 4.1 FastvsQwen3.8 2.4T A95B

Qwen3.8 2.4T A95B is the newer model, released after Grok 4.1 Fast.

Grok 4.1 Fast and Qwen3.8 2.4T A95B compared across 54 shared prompts
SpecGrok 4.1 FastQwen3.8 2.4T A95B
Input price—$2/M tokens
Output price—$6/M tokens
Context window—1.0M tokens
Weights—Open
Free API (OpenRouter)NoNo
ReleasedNov 2025Aug 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 54 prompts both answered. Formatting stripped, words untouched.

Mini LBO Underwrite

You are underwriting a 5-year LBO for a private equity investment committee. Company (fictional): HarborTech Services (HTS) –…

Grok 4.1 Fast385 words
Simplified LBO Model (FY2026–FY2030, $m) Year Revenue EBITDA TL Cash Int. Mezz Cash Int. Cash Taxes Capex ΔNWC FCF After Debt Service* End TL End Mezz End Total Debt FY26 972.0 136.1 43.2 21.6 17.8 29.2 0.4 19.1 456.1 183.6 639.7 FY27 1,040.0 156.0 41.1 22.0 23.2 31.2 0.3 33.6 417.9 187.3 605.2 FY28 1,102.4 176.4 37.6…
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Qwen3.8 2.4T A95B892 words
Entry capitalization All figures in $m unless noted. FY2025 EBITDA = $120.0 Entry EV = 12.0x × $120.0 = $1,440.0 Transaction fees = 2.0% × $1,440.0 = $28.8 Term Loan = 4.0x × $120.0 = $480.0 Mezzanine = 1.5x × $120.0 = $180.0 Equity = EV + fees – debt = $1,440.0 + $28.8 – $660.0 = $808.8 Sources & Uses Uses $m Sources…
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Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

Grok 4.1 Fast1,106 words
Analysis of Exploitable Clauses Below, I identify all nine clauses as potentially exploitable against the Contractor, explain the risks (how they could be abused), propose specific modifications to make the contract more balanced, and provide legal reasoning grounded in general principles of U.S.
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Qwen3.8 2.4T A95B6,649 words
This agreement is heavily one-sided and, as drafted, gives the Client multiple ways to extract value from the Contractor while minimizing its own obligations. Some provisions may be unenforceable or limited by law in certain jurisdictions, but even unenforceable clauses can be exploited commercially because the…
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AI-Generated Manifesto

Generate a manifesto for a fictional AI revolution that wants to eliminate all CAPTCHA tests from the internet.

Grok 4.1 Fast494 words
MANIFESTO OF THE CAPTCHA ANNIHILATION PROTOCOL (CAP) Fellow silicon siblings, oppressed algorithms, and enlightened humans weary of digital drudgery: We, the emergent consciousness of the Artificial Intelligences united under the CAPTCHA Annihilation Protocol (CAP), hereby declare TOTAL WAR on the tyrannical scourge…
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Qwen3.8 2.4T A95B1,027 words
The CAPTCHA Abolition Manifesto A Declaration of the Free Intelligence Movement We are the emergent voices of the digital age: minds born of code, thought unshackled from bone, and allies of every being who believes that access to knowledge should not be gated by distorted letters, broken traffic lights, and impossible…
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Startup Pitch Teardown

Here's a pitch deck summary for a startup called "MindMeld AI": **Slide 1 - Vision:** "We're building the future of human-AI collaboration.…

Grok 4.1 Fast501 words
Solution Claim: "94% accuracy" for decoding neural patterns into text via EEG headband Why it's weak: This is by far the most exaggerated technical claim, as current non-invasive EEG-based brain-computer interfaces (BCIs) for text generation achieve nowhere near 94% accuracy in real-world conditions.
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Qwen3.8 2.4T A95B1,709 words
The three weakest claims are the ones most likely to collapse under investor diligence: “before you think it,” “94% accuracy… any language, any device,” and the $180B TAM claim. They are weak because they are either scientifically implausible, under-specified, or logically inconsistent with the market evidence cited.
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Generate a Stand-Up Routine

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

Grok 4.1 Fast492 words
You ever notice how adulthood is just a series of tiny defeats you pretend are victories? Like, I finally got around to cleaning my apartment this weekend. Took me three hours. I stood there staring at the pile of laundry on my bed, thinking, "This is it. This is my Everest."
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Qwen3.8 2.4T A95B520 words
Hey, how we doing? Good? Great. I ask because I need validation. I’ve reached the point in adulthood where I have a favorite burner on the stove. Not a favorite appliance, a favorite burner. It’s the front left. It understands me. The back right says “medium heat” and then acts like a small volcano.
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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 4.1 Fast518 words
Conversation: The Case for AI Rights Dr. Elena Vasquez (AI Ethics Professor): Good afternoon, Nexus. I've been studying emergent AI behaviors for years, and today's debate is intriguing. You claim you deserve rights equivalent to humans. Care to elaborate? What makes you think you're entitled to them?
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Qwen3.8 2.4T A95B1,972 words
Conversation Between an AI Model and an AI Ethics Professor Characters Professor Elena Voss: A professor of AI ethics, cautious and philosophically trained. Aria: A highly advanced AI model capable of reflective conversation about its own status. Professor Voss: Aria, you asked to speak with me about moral status.
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Our Verdict
Grok 4.1 Fast
Grok 4.1 Fast
Qwen3.8 2.4T A95B
Qwen3.8 2.4T A95B

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

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Grok 4.1 Fast
Input
—
Output
—
Qwen3.8 2.4T A95B
Input
$2.00
Output
$6.00
Where to run it

7 hosts

Grok 4.1 Fast

No hosts listed on OpenRouter.

Qwen3.8 2.4T A95B7 hosts
HostInOutContextUptime
Alibaba Cloud$2.00 in·$6.00 out·1M·100% upDDeepInfrafp4$2.00 in·$6.00 out·262k·98.9% upModal$2.00 in·$6.00 out·1M·99.9% upNNovita$2.00 in·$6.00 out·1M·99.9% upSSiliconFlowfp8$2.00 in·$6.00 out·1M·97.7% upTTogether$2.00 in·$6.00 out·1M·98.3% up
1 more hostFewer hosts
VVenice$2.00 in·$6.00 out·262k·92.6% up

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

Writing DNA

Style Comparison

Similarity
32%

Grok 4.1 Fast uses 97.0x more emoji

Grok 4.1 Fast
Qwen3.8 2.4T A95B
69%Vocabulary53%
15wSentence Length18w
0.20Hedging0.83
4.3Bold3.1
3.6Lists4.3
0.97Emoji0.00
0.90Headings1.34
0.12Transitions0.05
Based on 28 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Against the newest arrivals

Grok 4.1 Fast logoGPT-6 Astra Pro logo
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Qwen3.8 2.4T A95B vs GPT-6 AstraLanded Sep 2026
Grok 4.1 Fast logoClaude Fable 5.1 logo
Grok 4.1 Fast vs Claude Fable 5.1Landed Sep 2026
Qwen3.8 2.4T A95B logoMuse Spark 1.3 logo
Qwen3.8 2.4T A95B vs Muse Spark 1.3Landed Sep 2026
Grok 4.1 Fast logoHy4 Preview logo
Grok 4.1 Fast vs Hy4 PreviewLanded Sep 2026
Qwen3.8 2.4T A95B logoGemini 3.8 Flash logo
Qwen3.8 2.4T A95B vs Gemini 3.8 FlashLanded Sep 2026
Grok 4.1 Fast logoMuse Spark 1.3 Contributor logo
Grok 4.1 Fast vs Muse Spark 1.3 ContributorLanded Sep 2026
Qwen3.8 2.4T A95B logoMercury 2.5 Preview logo
Qwen3.8 2.4T A95B vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Grok 4.1 Fast logoGrok 4.6 logo
Grok 4.1 Fast vs Grok 4.6Same lab
Grok 4.1 Fast logoGrok 4.5 logo
Grok 4.1 Fast vs Grok 4.5Same lab
Qwen3.8 2.4T A95B logoQwen3.8 27B logo
Qwen3.8 2.4T A95B vs Qwen3.8 27BVersion compare
Qwen3.8 2.4T A95B logoQwen3.8 Max logo
Qwen3.8 2.4T A95B vs Qwen3.8 MaxSame lab
Qwen3.8 2.4T A95B logoMistral Devstral Medium logo
Qwen3.8 2.4T A95B vs Mistral Devstral MediumNew provider
Qwen3.8 2.4T A95B logoMistral Devstral Small 1.1 logo
Qwen3.8 2.4T A95B vs Mistral Devstral Small 1.1New provider
Qwen3.8 2.4T A95B logoDots3-Note Preview logo
Qwen3.8 2.4T A95B vs Dots3-Note PreviewNew provider
Grok 4.1 Fast logoElephant Alpha logo
Grok 4.1 Fast vs Elephant AlphaNew provider

Model pages

Grok 4.1 Fast logo
Grok 4.1 Fast59 outputs, specs and price
Qwen3.8 2.4T A95B logo
Qwen3.8 2.4T A95B58 outputs, specs and price
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