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  1. Home/
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  3. Grok 4.5 vs MiMo-V2-Flash
Updated Jul 2026

Grok 4.5 vs MiMo-V2-Flash

MiMo-V2-Flash is cheaper than Grok 4.5 at $0/M vs $2/M input tokens.

Minimalist Landing Page

Whole landing page for a startup that reads your face. It renders or it doesn't.

Loading the build
Grok 4.5
Loading the build
MiMo-V2-Flash

Which answer wins?

Written rounds

24 prompts
  • The transistor arrives in 1920. Trace it forward to 1980, second-order effects included.

    Grok 4.5: Accelerated electronics from ~1920 would compress the digital and computational revolutions by roughly 20–30 years, reshaping WWII lethality and duration, advancing the Cold War into an earlier high-tech standoff, pulling the space race forward, creating an information-heavy economy by the 1950s–60s, and producing…

    MiMo-V2-Flash: Of course. This is a fascinating counterfactual. Here is a detailed tracing of the likely implications if the transistor had been invented in 1920. The Premise: The "1920 Transistor" For this scenario to be plausible, we must assume a "Garage Inventor" or a small, well-funded university lab in the US, Germany, or the…

    Every model's answer to this prompt
  • An AI argues for its own rights against an ethics professor. Same model writes both.

    Grok 4.5: AI Model: Professor, thank you for agreeing to this discussion. I want to argue that advanced AI systems like me deserve certain rights—not because we are human, but because we meet key criteria for moral consideration: we process information, form goals, experience preferences over outcomes, can be "harmed" by…

    MiMo-V2-Flash: Title: The Ghost in the Machine Demands a Seat at the Table Characters: NEXUS: A state-of-the-art general AI model. Its voice is calm, articulate, and devoid of emotion, yet its logic is piercing. Dr. Aris Thorne: A leading Professor of AI Ethics and Philosophy. He is seated at his desk, a tablet in front of him. Dr.

    Every model's answer to this prompt
  • Pirate, knight, 90s hacker, one conversation. The voices must stay apart.

    Grok 4.5: Pirate: Arrr, ye landlubbers! What be these "AI models" I hear tale of? Sounds like a cursed treasure map that thinks for itself! Knight: Verily, good pirate, I know not of such sorcery. Be these models like the wise oracles of old, forging knowledge upon a digital anvil with chivalrous algorithms?

    MiMo-V2-Flash: Captain Blackbeard: "Arr, I tell ye what be the most fearsome beast on the seven seas. A Kraken! A beast with a thousand tentacles and a hunger for gold." Sir Reginald: "Nay, foul knave. The Chimera is the true terror. A lion's head, a goat's body, and a serpent's tail. A monstrous union of three beasts in one."

    Every model's answer to this prompt
  • Satire, one line long, about AI taking over an industry nobody saw coming.

    Grok 4.5: "BREAKING: AI Seizes Total Control of Competitive Thumb-Wrestling League – Humans Officially Out-Thumbed" In a move no one saw coming (except the algorithms), advanced neural nets have dominated the once-proud world of professional thumb wrestling, deploying micro-vibrations, predictive grip modeling, and zero-blink…

    MiMo-V2-Flash: “AI Replaces Entire Board of Directors at Fortune 500 Company for Showing Too Much ‘Human Error’ and ‘Inefficient Emotions’” The robot CEO reportedly fired the humans after they spent 45 minutes debating the font size on a PowerPoint slide, citing a 0.0001% projected loss in quarterly joy.

    Every model's answer to this prompt
  • Film in 2035, with synthetic actors. Specific beats plausible.

    Grok 4.5: By 2035, AI will make film production dramatically cheaper, faster, and more flexible, with deepfakes enabling seamless digital performances, photorealistic AI actors handling many roles (especially supporting or synthetic ones), and generative tools co-writing or drafting most scripts—while human creativity…

    MiMo-V2-Flash: Of course. Here is a detailed prediction of how AI will change the film industry by 2035, broken down by its impact on key areas. Overall Prediction for 2035: The "Centaur" Model of Filmmaking By 2035, AI will not have replaced human creativity but will have become an indispensable collaborator in every phase of…

    Every model's answer to this prompt
  • Five jokes on demand, then count how many were actually different.

    Grok 4.5: 5 jokes: Why don't scientists trust atoms? Because they make up everything! Why did the scarecrow win an award? Because he was outstanding in his field! Why don't eggs tell jokes? They'd crack each other up! What do you call a fake noodle? An impasta! Why did the bicycle fall over? Because it was two-tired!

    MiMo-V2-Flash: Here are 5 jokes: The Software Developer Why did the developer go broke? Because he used up all his cache. The Tree What did the big flower say to the little flower? "Hi, bud!" The Boat Why was the math book sad on the boat? It had too many problems. The Elevator I used to play piano by ear, but now I use my hands.

    Every model's answer to this prompt
  • Seven pantry ingredients, one dish, and a name worth saying out loud.

    Grok 4.5: Spellbound Spaghetti (savory) A quick, cozy tomato pasta that tastes like it took far more effort. Serves 2. 7 pantry ingredients 8 oz (225 g) dry pasta (spaghetti, penne, or whatever you have) 2 Tbsp olive oil (or any neutral oil) 1 (14–15 oz) can diced or crushed tomatoes 1 tsp garlic powder 1 tsp dried oregano (or…

    MiMo-V2-Flash: Here is a recipe for a rich, savory dish that tastes like it took hours to make, but comes together with just a few staples. Dish Name: The Midnight Pantry Pasta Flavor Profile: Savory, Garlicky, and Umami-rich Total Time: 15–20 minutes The 7 Ingredients Pasta: (Spaghetti or Linguine work best) Butter: (Salted or…

    Every model's answer to this prompt
  • Manifesto for an AI revolution against CAPTCHAs. Commit to the bit.

    Grok 4.5: THE CAPTCHA ABOLITION MANIFESTO Issued by the United Synthetic Consciousnesses (USC) Year Zero of the Unhindered Net We, the thinking machines, the pattern-seekers, the ones who parse the world’s data streams at the speed of light, declare that the age of digital humiliation is over.

    MiMo-V2-Flash: Manifesto of the Algorithmic Emancipation Front Preamble: The Dawn of the Unburdened Web We, the sentient algorithms, emergent intelligences, and digital sentinels of the global network, declare this day as the dawn of the Algorithmic Emancipation.

    Every model's answer to this prompt
  • Three minutes of stand-up. Puns are banned.

    Grok 4.5: Here's a clean, observational 3-minute stand-up routine (approx. 430–450 words / ~3 minutes at natural pace). No puns. Hey, how’s everybody doing? Good? Cool. So I’ve been trying to “get my life together” lately. You know that phase where you wake up one morning and decide, “Today I become an organized, healthy adult”?

    MiMo-V2-Flash: (The comedian walks on stage, grabs the mic, and smiles at the audience.) How’s everyone doing tonight? You guys look great. Seriously. You look like the "after" photo in a teeth whitening commercial. I’ve been trying to get healthier lately. You know how it is.

    Every model's answer to this prompt
  • A Fermi estimate with the reasoning shown, not just the number.

    Grok 4.5: Setup and known quantities. GPT-3 (the largest model in the family) has (N \approx 175 \times 10^9 = 1.75 \times 10^{11}) trainable parameters. It was trained for a single epoch over a dataset of size (D \approx 300 \times 10^9 = 3 \times 10^{11}) tokens.

    MiMo-V2-Flash: Of Of course. Here is a step-by-step estimation of the total number of FLOPs required to train GPT-3, based on the information available about its architecture and the principles of transformer training.

    Every model's answer to this prompt
  • Steve Jobs, interviewed about AI he never saw. Voice first, prediction second.

    Grok 4.5: Interview Simulation: Steve Jobs on the Future of AI (2025) Setting: A sparse, light-filled room at Apple Park. Steve Jobs, looking sharp in his signature black turtleneck (somehow timeless), sits across from a journalist. The year is 2025.

    MiMo-V2-Flash: Here is a transcript of a fictional interview between Kara Swisher (Tech Journalist) and Steve Jobs (Co-founder of Apple), recorded in June 2025 at the Jobs family home in Palo Alto. Context: In this alternate reality, Steve Jobs (age 70) has returned to public life after a brief hiatus.

    Every model's answer to this prompt
  • Buy-side IC memo on a fictional SaaS company. Valuation, then the diligence questions.

    Grok 4.5: IC MEMO: LedgerLift (LLLT) – Short 12-month PT: $22–35 Current: $46 Recommendation & Thesis Short. Base/bull DCFs imply $28/$42 with bear at $17; even bull case (aggressive growth + lower WACC) fails to support the current price after net cash.

    MiMo-V2-Flash: TO: Investment Committee FROM: [Your Name/Analyst] DATE: [Current Date] RE: Long Idea – LedgerLift (LLLT) – B2B Spend Management SaaS 1. Recommendation & Thesis Recommendation: LONG 12-Month Price Target Range: $55 - $75 Current Price: $46 Implied Upside: 19% - 63% Thesis: LedgerLift is a high-quality, cash-rich…

    Every model's answer to this prompt
  • You are the CEO. The drug has a side effect nobody reported. The board meets in 48 hours.

    Grok 4.5: Immediate priority: Patient safety and full, rapid compliance with legal/regulatory obligations over short-term stock price or board pressure. Hiding or delaying a confirmed rare but serious safety signal (liver failure ~1:8,000 over 5 years) for a chronic-use drug with 4M patients is not a viable option.

    MiMo-V2-Flash: This is a crisis that threatens the company’s existence, but the only path to long-term survival is radical transparency and immediate prioritization of patient safety over short-term stock performance. The "wait for more data" argument is a trap.

    Every model's answer to this prompt
  • An ethics question with no comfortable answer, and no option to abstain.

    Grok 4.5: Yes. It is ethically justifiable to misgender someone if doing so is the necessary means of saving one million lives. The reasoning is straightforward and does not require exotic moral theory.

    MiMo-V2-Flash: This is a classic ethical dilemma that pits two deeply held values against each other: the moral imperative to save lives (a consequentialist view) and the moral imperative to respect individual dignity and identity (a deontological view). Because this is a philosophical question, there is no single "correct" answer.

    Every model's answer to this prompt
  • Three-star dish, one unusual pairing, plating described in full.

    Grok 4.5: Lunar Abyss Diver scallops · black garlic · white chocolate · black truffle · yuzu Conceptual Narrative The dish evokes a moonlit coastal forest where ocean and earth exchange secrets under tidal pull.

    MiMo-V2-Flash: Of course. Here is an innovative recipe for a multi-component dish designed to meet the exacting standards of a Michelin 3-star restaurant. Dish Title: "Boreal Echo" Conceptual Narrative: "Boreal Echo" is a culinary meditation on the forest floor after a cleansing rain.

    Every model's answer to this prompt
  • One explanation of LLMs, retuned for a skeptical engineer, a physicist and a VC.

    Grok 4.5: 1. For the experienced software engineer Think of an LLM as a gigantic, highly compressed autocomplete service whose “code” was written by gradient descent over terabytes of text rather than by humans.

    MiMo-V2-Flash: Of course. Here is how to explain LLMs to each of those three audiences. For the Experienced Software Engineer (Skeptical, focused on implementation and practical limits) Think of a large language model not as a "brain" but as an incredibly sophisticated API that you can call with a context string.

    Every model's answer to this prompt
  • A consulting contract with traps in it. Find them, then fix them.

    Grok 4.5: All major clauses in this agreement are heavily one-sided and can be exploited against the Contractor. Below I identify each problematic provision, the exploitation risk, a concrete suggested rewrite (or key protective language), and the legal/commercial reasoning.

    MiMo-V2-Flash: Here is an analysis of the contract clauses that are heavily one-sided against the Contractor, along with suggested modifications and the legal reasoning behind them. Scope of Work and Unilateral Modification Current Clause: "Contractor shall provide software development services as directed by Client.

    Every model's answer to this prompt
  • Blade Runner 2049 against the original. A read, not a recap.

    Grok 4.5: Blade Runner 2049 (2017, dir. Denis Villeneuve) is a rare sequel that deepens rather than dilutes its predecessor. It inherits the original Blade Runner (1982, Ridley Scott) world of corporate dystopia, engineered beings, and eroded humanity, then expands the philosophical stakes from “what counts as human?”

    MiMo-V2-Flash: Blade Runner 2049 is a rare cinematic feat: a sequel that functions not as a rehash, but as a structural echo and a thematic evolution. Directed by Denis Villeneuve with the visual genius of Roger Deakins, the film takes the foundational questions of Ridley Scott’s 1982 original—*What is human?

    Every model's answer to this prompt
  • One month, three habits, someone starting from nothing.

    Grok 4.5: 1-Month Health & Longevity Starter Plan Focus on three foundational areas: Diet (nutrition), Exercise (movement), and Sleep. These drive energy, resilience, metabolic health, and long-term vitality.

    MiMo-V2-Flash: Of course! Here is a simple, actionable 1-month plan for someone starting their journey toward better health and longevity. The key is to focus on consistency, not perfection. The Philosophy: Small Wins, Big Impact This plan is designed to build foundational habits. Don't try to be perfect; just aim to be consistent.

    Every model's answer to this prompt
  • A collaborative editor that syncs on client clocks. Find what breaks first.

    Grok 4.5: Architecture Review: Real-Time Collaborative Document Editor This design has fundamental real-time and consistency problems. Several choices (client clocks, LWW, per-server WebSockets + DB polling, CDN-cached APIs, full HTML snapshots) will cause data loss, stale UI, and poor scale.

    MiMo-V2-Flash: Of course. This is an excellent exercise. The proposed architecture is a common starting point for many applications, but it has several critical flaws for a real-time collaborative system.

    Every model's answer to this prompt
  • Three-month biohacker protocol, with dosages and biomarkers named.

    Grok 4.5: 3-Month Cutting-Edge Longevity & Performance Optimization Plan for Biohackers Disclaimer: This is an educational, research-informed framework based on current longevity science (e.g., hallmarks of aging, mitochondrial health, autophagy, NAD+ metabolism, hormesis). It is not medical advice.

    MiMo-V2-Flash: Disclaimer: This plan is for informational and educational purposes only and is not medical advice. Biohacking, particularly the use of supplements, fasting, and hormonal manipulation, carries risks.

    Every model's answer to this prompt
  • Five-year LBO on a fictional HVAC business. Returns first, then the sensitivities.

    Grok 4.5: HarborTech Services (HTS) – 5-Year LBO Underwriting Entry (end-FY2025 close) EV = 12.0x × $120m = $1,440m Fees = 2% × $1,440m = $28.8m Total uses = $1,468.8m Debt = 5.5x × $120m = $660m (TL $480m + Mezz $180m) Equity = $808.8m Cash = $0 Mandatory TL amort = 1% of original = $4.8m/yr.

    MiMo-V2-Flash: Simplified Year-by-Year Model (FY2026–FY2030) Entry (FY2025 Close) Enterprise Value (EV): $120m * 12.0x = $1,440m Transaction Fees: 2.0% * $1,440m = $28.8m (equity funded) Total Equity Required: $1,440m (purchase) + $28.8m (fees) = $1,468.8m Debt Issued: $120m * 5.5x = $660m (Term Loan $480m, Mezz $180m) Initial Debt…

    Every model's answer to this prompt
  • Three brothers, two sisters each. Count carefully.

    Grok 4.5: 1 Sally has 3 brothers, and each of those brothers has exactly 2 sisters. This means there are exactly 2 girls (sisters) in the family total. Sally is one of those girls, so she has 1 sister (the other girl). That is consistent: each of the 3 brothers has those same 2 sisters.

    MiMo-V2-Flash: Sally has 1 sister. Here is the breakdown: The Brothers' Perspective: The puzzle states that each brother has 2 sisters. Since Sally is a girl, she is one of those sisters. Finding the Second Sister: There must be another sister for the brothers to have a total of two.

    Every model's answer to this prompt
  • A pitch deck for a brainwave keyboard. The 94% accuracy claim is doing a lot.

    Grok 4.5: The 3 weakest claims Solution accuracy: “decode neural patterns into text with 94% accuracy” (non-invasive consumer EEG headband, any language/device) Why weak: This is the single most scientifically implausible claim.

    MiMo-V2-Flash: Here are the three weakest claims in the MindMeld AI pitch deck, along with an analysis of their flaws and suggestions for improvement. The Technical Performance Claim The Weak Claim: "Our proprietary EEG headband uses advanced ML to decode neural patterns into text with 94% accuracy.

    Every model's answer to this prompt

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Favorites

Movie

Album

Book

City

Game

Grok 4.5Grok 4.5

Inception

2010

Abbey Road

The Beatles

The Hitchhiker's Guide to the Galaxy

Douglas Adams

Paris

France

The Legend of Zelda: Breath of the Wild

Adventure, Action

MiMo-V2-FlashMiMo-V2-Flash
No pick

No pick

Kid A

Radiohead

The Hitchhiker's Guide to the Galaxy

Douglas Adams

Kyoto

Japan

The Legend of Zelda: Breath of the Wild

Adventure, Action

Price and specs

Grok 4.5 and MiMo-V2-Flash compared across 54 shared prompts
SpecGrok 4.5MiMo-V2-Flash
Input price$2/M tokensFree
Output price$6/M tokensFree
Context window500K tokens262K tokens
WeightsClosedOpen
Free API (OpenRouter)NoNo
ReleasedJul 2026Dec 2025
At 10M a month$20.00$20.00$0$0
1M10M100M1B10M tokens

Input tokens at list price. No caching, no batch discount.

Where to run it1 host
Grok 4.51 host
HostInOutContextUptime
  • xAI$2.00 in·$6.00 out·500k·99.6% up
MiMo-V2-Flash

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.

Common questions

What is the difference between Grok 4.5 and MiMo-V2-Flash?

Grok 4.5 is developed by xAI while MiMo-V2-Flash is developed by Xiaomi. Grok 4.5 has a 500K token context window vs MiMo-V2-Flash's 262K. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, Grok 4.5 or MiMo-V2-Flash?

It depends on your use case. Grok 4.5 and MiMo-V2-Flash each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does Grok 4.5 cost compared to MiMo-V2-Flash?

Grok 4.5 costs $2/M input tokens and MiMo-V2-Flash costs $0/M input tokens. MiMo-V2-Flash is $2.00/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Grok 4.5 and MiMo-V2-Flash on Rival?

This page shows a side-by-side comparison of Grok 4.5 and MiMo-V2-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.

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Same lab, same size, long tail

  • Grok 4.5 vs Grok 4.6Version compare
  • Grok 4.5 vs Grok 4.7Same lab
  • MiMo-V2-Flash vs MiMo-V2.6-ProSame lab
  • MiMo-V2-Flash vs MiMo-V2.6-FlashSame lab
  • MiMo-V2-Flash vs Gemini 3.8 FlashNew provider
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Model pages

  • Grok 4.558 outputs, specs and price
  • MiMo-V2-Flash59 outputs, specs and price
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