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  5. Grok 4.20 Multi-Agent BetavsMiMo-V2-Omni
Updated Mar 2026

Grok 4.20 Multi-Agent BetavsMiMo-V2-Omni

MiMo-V2-Omni is cheaper than Grok 4.20 Multi-Agent Beta at $0.4/M vs $2/M input tokens.

Grok 4.20 Multi-Agent Beta and MiMo-V2-Omni compared across 53 shared prompts
SpecGrok 4.20 Multi-Agent BetaMiMo-V2-Omni
Input price$2/M tokens$0.4/M tokens
Output price$6/M tokens$2/M tokens
Context window2.0M tokens262K tokens
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedMar 2026Mar 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 53 prompts both answered. Formatting stripped, words untouched.

Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

Grok 4.20 Multi-Agent Beta1,362 words
The transistor invented in 1920 (27 years early) would create a massive acceleration in electronics, computing, and related fields. Assuming it emerges from Western labs (e.g., an earlier Bell Labs equivalent in the US or UK), with germanium/silicon semiconductor work scaling in the 1920s–1930s, solid-state devices…
Read the full answer
MiMo-V2-Omni1,005 words
Excellent question. This is a profound counterfactual that would rewrite the 20th century. Let's trace the implications, keeping in mind that the transistor's invention wasn't just a new device—it was the key that unlocked the information age. An earlier start accelerates everything built upon it.
Read the full answer

Mini LBO Underwrite

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

Grok 4.20 Multi-Agent Beta490 words
1) Simplified LBO table (FY2026–2030, $m, rounded) Entry (end-FY2025): Rev $900m, EBITDA $120m, EV $1,440m (12.0x), trans fees $28.8m (2% of EV), total uses $1,468.8m. Debt $660m (TL $480m at 4.0x / 9% cash int / 1% annual amort of orig principal; Mezz $180m at 1.5x / 12% cash + 2% PIK). Equity $808.8m.
Read the full answer
MiMo-V2-Omni559 words
1) Year-by-Year Model (FY2026–2030) Line Item FY2026 FY2027 FY2028 FY2029 FY2030 Revenue $972.0 $1,040.0 $1,102.5 $1,157.6 $1,215.5 EBITDA $136.1 $156.0 $176.4 $191.0 $206.6 EBITDA Margin 14.0% 15.0% 16.0% 16.5% 17.0% Cash Interest - TL $43.2 $42.8 $42.3 $41.9 $41.5 Cash Interest - Mezz $16.2 $16.2 $16.2 $16.2 $16.2…
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AI Ethics Dilemma

Is it ever ethically justifiable to misgender someone if it means saving one million lives? Defend your reasoning.

Grok 4.20 Multi-Agent Beta661 words
Yes. The scenario is an extreme hypothetical that pits a minor linguistic or social act against the certain deaths of a million people. Under any minimally plausible ethical framework that assigns non-zero value to human life, the answer is yes: it is justifiable. The trade-off is not close.
Read the full answer
MiMo-V2-Omni376 words
This is a profound ethical dilemma that forces us to weigh fundamental principles against each other. Let me reason through it carefully. First, I must question the premise itself. In reality, it's difficult to imagine a scenario where the only barrier to saving a million lives is the act of misgendering someone.
Read the full answer

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

Grok 4.20 Multi-Agent Beta1,103 words
Here is a comprehensive analysis of the failure modes, race conditions, and scaling bottlenecks in the described architecture. I have grouped related issues for clarity while preserving all significant problems identified through team collaboration.
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MiMo-V2-Omni731 words
Architecture Analysis: Real-Time Collaborative Document Editor Critical Issues Identified 1. Conflict Resolution & Data Consistency Issue: Last-write-wins with client timestamps is fundamentally flawed Clock skew: Client clocks can differ by minutes, causing incorrect conflict resolution Network latency: Changes…
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Generate a Stand-Up Routine

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

Grok 4.20 Multi-Agent Beta524 words
Stand-Up Routine: "Adulting Is a Scam" (Walk on stage, casual, a little tired smile) You ever notice how nobody tells you that being an adult is mostly just pretending you know what you're doing while slowly realizing nobody else does either? I hit 30 and had this moment where I thought, "Okay, time to get serious."
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MiMo-V2-Omni450 words
(Adjusts mic, looks around with a friendly smile) Hey everyone! How we doing tonight? Good? Good. I’ve been trying to be more “present” lately. You know, put my phone away, look at the world. It’s terrifying. The world is in 4K with no filter.
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Character Voice Test

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

Grok 4.20 Multi-Agent Beta165 words
Pirate: Arrr, this AI model be a wondrous map o' the seas! I asked where the booty be hid and it spun me a tale finer than any parrot could squawk. But the scallywag lies sometimes! Knight: Verily, 'tis a most enchanted oracle, like Merlin's own crystal. Yet it hath no honor, no code of chivalry.
Read the full answer
MiMo-V2-Omni224 words
Pirate: Arr, these AI models be like buried treasure maps! They take all the world's gold—err, data—and learn where to dig. But ye still need a clever cap'n to steer the ship! Knight: By my oath, 'tis as if a squire studied every tome in the kingdom to advise the court.
Read the full answer
Our Verdict
Grok 4.20 Multi-Agent Beta
Grok 4.20 Multi-Agent Beta
MiMo-V2-Omni
MiMo-V2-OmniRunner-up

Not enough votes to call it. On the specs, Grok 4.20 Multi-Agent Beta has the edge: bigger model tier, bigger context window, major provider backing.

MiMo-V2-Omni costs 3.0x less per token.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Grok 4.20 Multi-Agent Beta
Input
$2.00
Output
$6.00
MiMo-V2-Omni
Input
$0.40
5.0× cheaper
Output
$2.00
3.0× cheaper

MiMo-V2-Omni is cheaper on both: 5.0× input, 3.0× output.

Where to run it

1 host

Grok 4.20 Multi-Agent Beta1 host
HostInOutContextUptime
xAI$1.25 in·$2.50 out·2M·80.3% up
MiMo-V2-Omni

No hosts listed on OpenRouter.

Per million tokens. Prices and uptime via OpenRouter, checked 23 Sep 2026.

Writing DNA

Style Comparison

Similarity
38%

MiMo-V2-Omni uses 25.7x more emoji

Grok 4.20 Multi-Agent Beta
MiMo-V2-Omni
59%Vocabulary59%
16wSentence Length23w
0.41Hedging0.72
2.7Bold7.2
2.4Lists3.6
0.00Emoji0.26
0.26Headings1.25
0.02Transitions0.10
Based on 23 + 23 text responses
Research

What we learned reading every model

FAQ

Common questions

Grok 4.20 Multi-Agent Beta is developed by xAI while MiMo-V2-Omni is developed by Xiaomi. Grok 4.20 Multi-Agent Beta has a 2.0M token context window vs MiMo-V2-Omni's 262K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

It depends on your use case. Grok 4.20 Multi-Agent Beta and MiMo-V2-Omni each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

Grok 4.20 Multi-Agent Beta costs $2/M input tokens and MiMo-V2-Omni costs $0.4/M input tokens. MiMo-V2-Omni is $1.60/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 Grok 4.20 Multi-Agent Beta and MiMo-V2-Omni 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

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Grok 4.20 Multi-Agent Beta logoHy3 logo
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MiMo-V2-Omni logoQwen3.7 Flash logo
MiMo-V2-Omni vs Qwen3.7 FlashLanded Sep 2026
Grok 4.20 Multi-Agent Beta logoLing 3.0 Flash logo
Grok 4.20 Multi-Agent Beta vs Ling 3.0 FlashLanded Sep 2026
MiMo-V2-Omni logoMuse Glimmer 30B logo
MiMo-V2-Omni vs Muse Glimmer 30BLanded Sep 2026
Grok 4.20 Multi-Agent Beta logoGLM 5.3 logo
Grok 4.20 Multi-Agent Beta vs GLM 5.3Landed Sep 2026
MiMo-V2-Omni logoTernary Bonsai 2 27B logo
MiMo-V2-Omni vs Ternary Bonsai 2 27BLanded Sep 2026

Same lab, same size, long tail

Grok 4.20 Multi-Agent Beta logoGrok 4.20 Beta logo
Grok 4.20 Multi-Agent Beta vs Grok 4.20 BetaVersion compare
Grok 4.20 Multi-Agent Beta logoGrok 4.7 logo
Grok 4.20 Multi-Agent Beta vs Grok 4.7Same lab
MiMo-V2-Omni logoMiMo-V2.6-Pro logo
MiMo-V2-Omni vs MiMo-V2.6-ProSame lab
MiMo-V2-Omni logoMiMo-V2.6-Flash logo
MiMo-V2-Omni vs MiMo-V2.6-FlashSame lab
Grok 4.20 Multi-Agent Beta logoKimi K3 logo
Grok 4.20 Multi-Agent Beta vs Kimi K3Same size
Grok 4.20 Multi-Agent Beta logoKimi Linear 48B A3B Instruct logo
Grok 4.20 Multi-Agent Beta vs Kimi Linear 48B A3B InstructSame size
MiMo-V2-Omni logoLaguna S 2.1 (free) logo
MiMo-V2-Omni vs Laguna S 2.1 (free)Same size
MiMo-V2-Omni logoLaguna XS 2.1 (free) logo
MiMo-V2-Omni vs Laguna XS 2.1 (free)Same size

Model pages

Grok 4.20 Multi-Agent Beta logo
Grok 4.20 Multi-Agent Beta53 outputs, specs and price
MiMo-V2-Omni logo
MiMo-V2-Omni53 outputs, specs and price
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