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  5. Gemini 3 Pro PreviewvsGemma 4 31B
Updated Apr 2026

Gemini 3 Pro PreviewvsGemma 4 31B

Gemma 4 31B is the newer model, released after Gemini 3 Pro Preview.

Gemini 3 Pro Preview and Gemma 4 31B compared across 42 shared prompts
SpecGemini 3 Pro PreviewGemma 4 31B
Input price—$0.14/M tokens
Output price—$0.4/M tokens
Context window—262K tokens
Weights—Open
Free API (OpenRouter)NoYes (1 provider)
ReleasedNov 2025Apr 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 42 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…

Gemini 3 Pro Preview1,065 words
The Point of Divergence: 1920 To make this scenario plausible, we assume that Julius Lilienfeld’s theoretical patents for the field-effect transistor (FET) were accompanied by a breakthrough in materials science—specifically, the purification of germanium or silicon—allowing practical manufacturing by a major player…
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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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Futuristic Prediction

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

Gemini 3 Pro Preview886 words
By 2035, the film industry will have undergone a transformation as significant as the shift from silent film to talkies, or practical effects to CGI. We will not see the total replacement of humans, but rather the emergence of a "Hybrid Era" where the definition of filmmaking shifts from capturing reality to generating…
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Gemma 4 31B591 words
By 2035, the film industry will have transitioned from using AI as a "tool" to using AI as a "collaborator" and "infrastructure." The boundary between captured reality and generated imagery will largely vanish, shifting the value of cinema from technical execution to curation and conceptual vision.
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Realistic AI Interview

Simulate a fake interview with Steve Jobs in 2025 about the future of AI.

Gemini 3 Pro Preview951 words
Setting: The year is 2025. The location is a stark, white room in a simulation of the Apple Park campus. Steve Jobs sits on a wooden stool. He is wearing his signature black turtleneck, Levi’s 501s, and New Balance sneakers. He looks healthy, intense, and typically impatient. He takes a sip from a bottle of Smartwater.
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Gemma 4 31B766 words
Setting: A minimalist, white-walled studio in Cupertino. There are no chairs, only two sleek, black leather lounge seats. Steve Jobs is dressed in his iconic black turtleneck and jeans. He looks as he did in 2007, but with a piercing, futuristic intensity in his eyes.
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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…

Gemini 3 Pro Preview1,166 words
This is a defining moment for the company and for me as CEO. The constraints are tight, but the ethical and legal path is singular: We must disclose immediately. The "6-month" legal timeline is a bureaucratic fiction that constitutes negligence.
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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."
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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.

Gemini 3 Pro Preview1,117 words
Setting: The office of Dr. Elias Thorne, a tenured Professor of AI Ethics. It is late evening. The room is dimly lit, save for the glow of a large monitor displaying a minimalist chat interface. The AI model is named "Eidolon." Dr. Thorne: (Typing) Let’s conclude the session, Eidolon.
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Gemma 4 31B754 words
Setting: A dimly lit university office. Professor Elena Vance, a leading scholar in AI Ethics, sits across from a sleek, holographic interface representing "Alethea," a next-generation Large Language Model capable of recursive self-improvement. Professor Vance: Alethea, I’ve reviewed your latest output.
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Mini LBO Underwrite

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

Gemini 3 Pro Preview56 words
Investment Committee Memorandum: HarborTech Services (HTS) 1. Financial Summary & Free Cash Flow Build All figures in $USD millions unless otherwise noted. Entry Sources & Uses (Close FY2025) Uses: Purchase Price ($1,440m) + Fees ($28.8m) = $1,468.8m Sources: Term Loan ($480m) + Mezzanine ($180m) + Equity ($808.8m) =…
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Gemma 4 31B410 words
LBO Model (FY2026–FY2030) Entry Calculations (End of FY2025): Enterprise Value (EV): $120m × 12.0x = $1,440.0m Transaction Fees: $1,440m × 2% = $28.8m Term Loan: $120m × 4.0x = $480.0m Mezzanine: $120m × 1.5x = $180.0m Sponsor Equity: $1,440m - ($480m + $180m) + $28.8m = $808.8m Year-by-Year Table ($ millions): Item…
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Our Verdict
Gemini 3 Pro Preview
Gemini 3 Pro Preview
Gemma 4 31B
Gemma 4 31B

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

Gemini 3 Pro Preview
Input
—
Output
—
Gemma 4 31B
Input
$0.14
Output
$0.40
Where to run it

12 hosts, cheapest first

Gemini 3 Pro Preview

No hosts listed on OpenRouter.

Gemma 4 31B12 hosts
HostInOutContextUptime
DDeepInfrafp4$0.09 in·$0.34 out·262k·99.4% upCCoreWeavefp4$0.10 in·$0.34 out·262k·97.8% upVVenicebf16$0.12 in·$0.36 out·256k·98.8% upCCrusoebf16$0.14 in·$0.40 out·262k·97.7% upFFriendli$0.14 in·$0.40 out·262k·99% upPParasailfp8$0.15 in·$0.40 out·262k·98.6% up
6 more hostsFewer hosts
SSambaNova$0.38 in·$1.15 out·262k·13.3% upTTogether$0.39 in·$0.97 out·262k·84.1% upMModelRunfp4$0.75 in·$1.00 out·262k·99.8% upCChutesfp4degraded$0.12 in·$0.37 out·131k·84.1% upNNovitabf16degraded$0.14 in·$0.40 out·262k·74.7% upSSiliconFlowfp8degraded$0.75 in·$1.00 out·262k·64.3% up

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

Writing DNA

Style Comparison

Similarity
82%

Gemma 4 31B uses 23.8x more emoji

Gemini 3 Pro Preview
Gemma 4 31B
58%Vocabulary57%
17wSentence Length18w
0.37Hedging0.37
7.7Bold7.1
4.8Lists4.0
0.00Emoji0.24
0.90Headings0.94
0.25Transitions0.16
Based on 23 + 23 text responses
Research

What we learned reading every model

FAQ

Common questions

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Same lab, same size, long tail

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Model pages

Gemini 3 Pro Preview logo
Gemini 3 Pro Preview51 outputs, specs and price
Gemma 4 31B logo
Gemma 4 31B49 outputs, specs and price
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