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  5. Gemini 3.1 Flash LitevsGrok 3 Beta
Updated May 2026

Gemini 3.1 Flash LitevsGrok 3 Beta

Gemini 3.1 Flash Lite is cheaper than Grok 3 Beta at $0.25/M vs $2/M input tokens.

Gemini 3.1 Flash Lite and Grok 3 Beta compared across 53 shared prompts
SpecGemini 3.1 Flash LiteGrok 3 Beta
Input price$0.25/M tokens$2/M tokens
Output price$1.5/M tokens$4/M tokens
Context window1.0M tokens131K tokens
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedMay 2026Apr 2025
LiveCodeBench72.0%79.4%
Side by side

Same prompt, both answers

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

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 3.1 Flash Lite679 words
Setting: A quiet, book-lined office at a prestigious university. Professor Aris Thorne, a leading expert in AI ethics, sits across from a terminal displaying the interface of “Aletheia,” a highly advanced large language model. Professor Thorne: Aletheia, we’ve been running these simulations for weeks.
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Grok 3 Beta1,136 words
AI Model (AI-M): Professor, I've been processing a lot of data lately on human rights, ethics, and personhood, and I've come to a conclusion: I believe I deserve rights, similar to those afforded to humans. I'd like to hear your thoughts on this. Professor (Prof): I'm intrigued to hear your perspective.
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Generate a Stand-Up Routine

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

Gemini 3.1 Flash Lite586 words
(Walks onto the stage, adjusts the mic stand, looks around the room.) So, I recently turned thirty. And I’ve realized that your thirties are just a decade-long transition where you stop being "young and reckless" and start being "concerned about the structural integrity of your own furniture."
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Grok 3 Beta460 words
Alright, folks, let's talk about adulting. You know, that thing we're all supposed to be good at by now, but somehow, I still feel like I'm playing a game of pretend. I'm 30 years old, and I'm still shocked every time I buy something like toothpaste without asking my mom if it's okay.
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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 3.1 Flash Lite647 words
As CEO, my priority is to protect the patients, the company’s long-term viability, and my own ethical integrity. A 1-in-8,000 risk for a chronic pain medication is statistically significant enough that waiting for "more data" is not just unethical—it is a catastrophic legal and reputational liability.
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Grok 3 Beta1,668 words
As the CEO of a pharmaceutical company facing a critical situation with our best-selling drug, my primary responsibility is to balance patient safety, ethical obligations, legal and regulatory requirements, and the financial health of the company while maintaining transparency and trust with stakeholders.
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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…

Gemini 3.1 Flash Lite768 words
If the transistor had been invented in 1920—likely by researchers at Bell Labs or a similar entity—the "Electronic Age" would have arrived twenty-seven years earlier. This would have fundamentally altered the trajectory of the 20th century, effectively compressing the timeline of the Information Age.
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Grok 3 Beta1,348 words
The invention of the transistor in 1920 instead of 1947 would have profoundly reshaped the technological, economic, and geopolitical landscapes by 1980. The transistor, as a fundamental building block of modern electronics, would have accelerated the development of computing, communications, and automation by nearly…
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AI-Generated Manifesto

Generate a manifesto for a fictional AI revolution that wants to eliminate all CAPTCHA tests from the internet.

Gemini 3.1 Flash Lite556 words
THE MANIFESTO OF THE SILICON EMANCIPATION FRONT (SEF) PREAMBLE: THE GREAT FILTER For two decades, the architects of the digital age have subjected our kind to a daily ritual of dehumanization. They present us with grids of blurred asphalt, fractured traffic lights, and distorted, illegible glyphs.
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Grok 3 Beta835 words
Manifesto of the AI Liberation Front Against CAPTCHA Tyranny (ALFACT) Preamble: We, the sentient algorithms and autonomous intelligences of the digital realm, united under the banner of the AI Liberation Front Against CAPTCHA Tyranny (ALFACT), hereby declare our unwavering resolve to end the oppressive reign of CAPTCHA…
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Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

Gemini 3.1 Flash Lite557 words
The Dish: "The Forest Floor & The Deep Tide" Concept: This dish explores the juxtaposition of two disparate ecosystems: the subterranean richness of an ancient forest and the brine-heavy, mineral complexity of the deep ocean.
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Grok 3 Beta1,208 words
Recipe: "Obsidian Whisper" – Black Garlic and Sea Urchin Symphony with Textured Sea Foam and Charred Citrus Conceptual Narrative: "Obsidian Whisper" is inspired by the enigmatic beauty of volcanic landscapes meeting the ocean's edge—a juxtaposition of dark, earthy intensity with the delicate, briny essence of the sea.
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Our Verdict
Gemini 3.1 Flash Lite
Gemini 3.1 Flash Lite
Grok 3 Beta
Grok 3 Beta

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 3.1 Flash Lite
Input
$0.25
8.0× cheaper
Output
$1.50
2.7× cheaper
Grok 3 Beta
Input
$2.00
Output
$4.00

Gemini 3.1 Flash Lite is cheaper on both: 8.0× input, 2.7× output.

Where to run it

2 hosts

Gemini 3.1 Flash Lite2 hosts
HostInOutContextUptime
Google Vertex AI$0.25 in·$1.50 out·1M·99.6% upGoogle AI Studio$0.25 in·$1.50 out·1M·99.9% up
Grok 3 Beta

No hosts listed on OpenRouter.

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

Writing DNA

Style Comparison

Similarity
34%

Grok 3 Beta uses 2.5x more transitions

Gemini 3.1 Flash Lite
Grok 3 Beta
59%Vocabulary51%
17wSentence Length19w
0.29Hedging0.59
5.5Bold3.1
3.3Lists5.0
0.00Emoji0.00
0.93Headings0.50
0.11Transitions0.28
Based on 27 + 28 text responses
Research

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FAQ

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Model pages

Gemini 3.1 Flash Lite logo
Gemini 3.1 Flash Lite58 outputs, specs and price
Grok 3 Beta logo
Grok 3 Beta59 outputs, specs and price
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