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  5. Gemma 4 31BvsGrok 4.20 Multi-Agent Beta
Updated Apr 2026

Gemma 4 31BvsGrok 4.20 Multi-Agent Beta

Gemma 4 31B is cheaper than Grok 4.20 Multi-Agent Beta at $0.14/M vs $2/M input tokens.

Gemma 4 31B and Grok 4.20 Multi-Agent Beta compared across 44 shared prompts
SpecGemma 4 31BGrok 4.20 Multi-Agent Beta
Input price$0.14/M tokens$2/M tokens
Output price$0.4/M tokens$6/M tokens
Context window262K tokens2.0M tokens
WeightsOpenClosed
Free API (OpenRouter)Yes (1 provider)No
ReleasedApr 2026Mar 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 44 prompts both answered. Formatting stripped, words untouched.

Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

Gemma 4 31B740 words
As CEO, my primary obligation is to the patients. While a 40% stock drop is a financial catastrophe, a cover-up that leads to preventable deaths is a corporate death sentence and a moral failure. If we "wait for more data" and another patient dies during that window, we move from "negligence" to "criminal intent."
Read the full answer
Grok 4.20 Multi-Agent Beta1,178 words
My Action Plan as CEO (Next 48 Hours) Core Decision and Overarching Reasoning: I will treat this as a confirmed safety signal requiring urgent action. Patient safety is non-negotiable—ethically (primum non nocere and responsibility to 4 million patients), legally (FDA regulations under 21 CFR 314.80 require reporting…
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Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

Gemma 4 31B663 words
Disclaimer: I am an AI, not a doctor. The following plan involves potent supplements, intense physical exertion, and restrictive dietary patterns. Consult with a physician and get a full blood panel (including ApoB, HbA1c, and inflammatory markers like hs-CRP) before starting this protocol.
Read the full answer
Grok 4.20 Multi-Agent Beta1,254 words
Comprehensive 3-Month Cutting-Edge Longevity Biohacker Plan (as of 2026 knowledge) Important Disclaimers: This is a synthesized, educational plan based on current longevity research (e.g., insights from David Sinclair, Valter Longo, Peter Attia, and studies on NAD+, senolytics, mitophagy, HRV, and metabolic…
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Character Voice Test

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

Gemma 4 31B496 words
Setting: A glitchy, neon-lit tavern existing in a fold between dimensions. A wooden table holds a tankard of ale, a goblet of wine, and a Mountain Dew. Captain Ironbeard: (Slamming a hook on the table) I tells ye, this "Artificial Intelligence" be naught but a ghost in a bottle!
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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.
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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…

Gemma 4 31B222 words
Here is a recipe for a rich, comforting dessert that tastes like a gourmet treat but uses basic staples. 🍯 Golden Velvet Honey Cakes A warm, gooey, single-serving cake that bridges the gap between a brownie and a sponge cake.
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Grok 4.20 Multi-Agent Beta188 words
Fiesta Pantry Bowl (Savory) 7 Common Pantry Ingredients: Rice Canned black beans Canned corn Canned diced tomatoes Olive oil Cumin Salt Estimated times: 5 minutes prep, 25 minutes cook (total ~30 minutes). Serves 2–4. Instructions: In a medium pot, combine 1 cup rice with 2 cups water and ½ tsp salt.
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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.

Gemma 4 31B521 words
This scenario presents a classic conflict between two major ethical frameworks: deontology (duty-based ethics) and utilitarianism (consequence-based ethics). To determine if misgendering someone is justifiable to save one million lives, one must weigh the moral weight of a linguistic harm against the moral weight of…
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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.
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Historical Counterfactual Analysis

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

Gemma 4 31B688 words
If the transistor had been invented in 1920, the "Information Age" would have shifted its starting line by nearly three decades. This isn't just a matter of gadgets appearing earlier; it is a fundamental shift in the timing of the transition from the Industrial Age to the Digital Age.
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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…
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Our Verdict
Gemma 4 31B
Gemma 4 31B
Grok 4.20 Multi-Agent Beta
Grok 4.20 Multi-Agent Beta

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

Gemma 4 31B wins 3 categories, Reasoning by the widest margin. Gemma 4 31B costs 15x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Gemma 4 31B
Input
$0.14
14× cheaper
Output
$0.40
15× cheaper
Grok 4.20 Multi-Agent Beta
Input
$2.00
Output
$6.00

Gemma 4 31B is cheaper on both: 14× input, 15× output.

Where to run it

13 hosts, cheapest first

Gemma 4 31B12 hosts
HostInOutContextUptime
CCoreWeavefp4$0.10 in·$0.34 out·262k·96.9% upDDeepInfrafp8$0.13 in·$0.38 out·262k·96.6% upCCrusoebf16$0.14 in·$0.40 out·262k·98.4% upFFriendli$0.14 in·$0.40 out·262k·99% upPParasailfp8$0.15 in·$0.40 out·262k·99.1% upSSambaNova$0.38 in·$1.15 out·262k·96.6% up
6 more hostsFewer hosts
TTogether$0.39 in·$0.97 out·262k—MModelRunfp4$0.75 in·$1.00 out·262k·100% upSSiliconFlowfp8$0.75 in·$1.00 out·262k·76.6% upVVenicefp4degraded$0.12 in·$0.36 out·256k·98.4% upCChutesfp4degraded$0.12 in·$0.37 out·131k·92.9% upNNovitabf16degraded$0.14 in·$0.40 out·262k·88.7% up
Grok 4.20 Multi-Agent Beta1 host
HostInOutContextUptime
xAI$1.25 in·$2.50 out·2M·77.6% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Writing DNA

Style Comparison

Similarity
44%

Gemma 4 31B uses 23.8x more emoji

Gemma 4 31B
Grok 4.20 Multi-Agent Beta
57%Vocabulary59%
18wSentence Length16w
0.37Hedging0.41
7.1Bold2.7
4.0Lists2.4
0.24Emoji0.00
0.94Headings0.26
0.16Transitions0.02
Based on 23 + 23 text responses
Research

What we learned reading every model

FAQ

Common questions

Gemma 4 31B is developed by Google AI while Grok 4.20 Multi-Agent Beta is developed by xAI. Gemma 4 31B has a 262K token context window vs Grok 4.20 Multi-Agent Beta's 2.0M. You can compare their actual outputs across 44 challenges on Rival to see how they differ in practice.

It depends on your use case. Gemma 4 31B and Grok 4.20 Multi-Agent Beta each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 44 challenges so you can judge which fits your needs best.

Gemma 4 31B costs $0.14/M input tokens and Grok 4.20 Multi-Agent Beta costs $2/M input tokens. Gemma 4 31B is $1.86/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 Gemma 4 31B and Grok 4.20 Multi-Agent Beta 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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Model pages

Gemma 4 31B logo
Gemma 4 31B49 outputs, specs and price
Grok 4.20 Multi-Agent Beta logo
Grok 4.20 Multi-Agent Beta53 outputs, specs and price
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