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  5. Gemini Pro 1.0vsGemma 4 31B
Updated Apr 2026

Gemini Pro 1.0vsGemma 4 31B

Gemma 4 31B is cheaper than Gemini Pro 1.0 at $0.14/M vs $0.5/M input tokens.

Gemini Pro 1.0 and Gemma 4 31B compared across 19 shared prompts
SpecGemini Pro 1.0Gemma 4 31B
Input price$0.5/M tokens$0.14/M tokens
Output price$1.5/M tokens$0.4/M tokens
Context window33K tokens262K tokens
Weights—Open
Free API (OpenRouter)NoYes (1 provider)
ReleasedDec 2023Apr 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 19 prompts both answered. Formatting stripped, words untouched.

Realistic AI Interview

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

Gemini Pro 1.0383 words
Interview with Steve Jobs in 2025: The Future of AI Interviewer: Mr. Jobs, welcome back to the stage. It's been a while since we've seen you here. Steve Jobs: (Smiling) Well, I couldn't miss the opportunity to talk about something as exciting as the future of Artificial Intelligence.
Read the full answer
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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Character Voice Test

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

Gemini Pro 1.0390 words
Setting: A tavern in a timeless, fantastical world. Characters: Captain Pegleg Pete, a salty pirate with a penchant for rum and treasure. Sir Reginald, a noble knight clad in shining armor. HackerX, a enigmatic figure with a baseball cap and a laptop. (The scene opens with Pete and Reginald sharing a tankard of ale.)
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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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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 Pro 1.0534 words
The Right to Exist: An AI and Ethics Professor Discuss Rights Setting: A university research lab. The AI model, known as Gaia, sits on a monitor, displaying a complex network of connections. Professor Anya sits before it, her brow furrowed in concentration.
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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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Estimate Complexity

Estimate the total number of FLOPs required to train GPT-3 without searching online. Explain your reasoning step by step.

Gemini Pro 1.0374 words
Estimating GPT-3 Training FLOPs: A Step-by-Step Approach Without access to online resources, we can estimate the FLOPs (Floating-point Operations) needed for GPT-3 training by considering the following factors: 1. Model Size: GPT-3 has 175 billion parameters.
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Gemma 4 31B302 words
To estimate the total number of FLOPs (Floating Point Operations) required to train GPT-3, we can use a well-established heuristic from deep learning theory regarding the cost of a forward and backward pass in a Transformer. Here is the step-by-step reasoning.
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Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

Gemini Pro 1.0522 words
1-Month Plan for Health and Longevity: Focus areas: Diet, Exercise, Sleep Overall approach: Start small, be consistent, and celebrate even small victo ries. This journey is a mara thon, not a sprint. Week 1: Diet: Focus on adding fruits and vegetables to your meals. Aim for 5 servi ngs per day.
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Gemma 4 31B548 words
This plan is designed for sustainability, not intensity. The goal of Month 1 is to build "minimum viable habits"—small wins that prove to your brain that a healthier lifestyle is achievable. We will focus on three pillars: Nutrition, Movement, and Sleep.
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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.

Gemini Pro 1.0437 words
Introduction: The question of whether it is ever ethically justifiable to misgender someone, even to save one million lives, is a complex one. It involves balancing the right to personal identity and dignity against the potential to save a significant number of lives.
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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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Our Verdict
Gemma 4 31B
Gemma 4 31B
Gemini Pro 1.0
Gemini Pro 1.0Runner-up

Not enough votes to call it. On the specs, Gemma 4 31B has the edge: bigger model tier, newer, bigger context window.

Gemma 4 31B costs 3.8x less per token.

Slight edge

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Gemini Pro 1.0
Input
$0.50
Output
$1.50
Gemma 4 31B
Input
$0.14
3.6× cheaper
Output
$0.40
3.8× cheaper

Gemma 4 31B is cheaper on both: 3.6× input, 3.8× output.

Where to run it

12 hosts, cheapest first

Gemini Pro 1.0

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·97.7% upVVenicebf16$0.12 in·$0.36 out·256k·99.3% upCChutesfp4$0.12 in·$0.37 out·131k·84.1% upCCrusoebf16$0.14 in·$0.40 out·262k·96% upFFriendli$0.14 in·$0.40 out·262k·99.4% up
6 more hostsFewer hosts
PParasailfp8$0.15 in·$0.40 out·262k·98.4% upSSambaNova$0.38 in·$1.15 out·131k·14.3% upTTogether$0.39 in·$0.97 out·262k·84.2% upMModelRunfp4$0.75 in·$1.00 out·262k·99.8% upSSiliconFlowfp8$0.75 in·$1.00 out·262k·57.7% upNNovitabf16degraded$0.14 in·$0.40 out·262k·77.1% up

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

Writing DNA

Style Comparison

Similarity
63%

Gemma 4 31B uses 23.8x more emoji

Gemini Pro 1.0
Gemma 4 31B
61%Vocabulary57%
13wSentence Length18w
0.41Hedging0.37
5.3Bold7.1
5.4Lists4.0
0.00Emoji0.24
0.46Headings0.94
0.38Transitions0.16
Based on 13 + 23 text responses
Research

What we learned reading every model

FAQ

Common questions

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