Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
  1. Home
  2. /
  3. Compare
  4. /
  5. Gemini 3.1 Flash Lite Previewvso3 Mini
Updated Mar 2026

Gemini 3.1 Flash Lite Previewvso3 Mini

Gemini 3.1 Flash Lite Preview is cheaper than o3 Mini at $0.25/M vs $1.1/M input tokens.

Gemini 3.1 Flash Lite Preview and o3 Mini compared across 53 shared prompts
SpecGemini 3.1 Flash Lite Previewo3 Mini
Input price$0.25/M tokens$1.1/M tokens
Output price$1.5/M tokens$4.4/M tokens
Context window1.0M tokens64K tokens
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedMar 2026Dec 2024
Side by side

Same prompt, both answers

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

Mini LBO Underwrite

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

Gemini 3.1 Flash Lite Preview365 words
Financial Projections (FY2026–FY2030) Initial Setup (End of FY2025): EV: $120m * 12.0x = $1,440m Fees: $1,440m * 2.0% = $28.8m Term Loan (4.0x): $480m Mezzanine (1.5x): $180m Equity: $1,440m + $28.8m - $480m - $180m = $808.8m Metric ($m) FY2026 FY2027 FY2028 FY2029 FY2030 Revenue 972.0 1,040.0 1,102.4 1,157.5 1,215.4…
Read the full answer
o3 Mini1,203 words
Below is one acceptable “short‐cut” working paper that shows the key steps. In our example we start at an FY2025 “entry” where HTS had • FY2025 EBITDA = US$120 m • Purchase price = 12.0× EBITDA = US$1,440 m • Total debt = 5.5× EBITDA = US$660 m, split as: – Term Loan = 4.0× EBITDA = US$480 m (9.0% cash interest…
Read the full answer

Generate a Stand-Up Routine

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

Gemini 3.1 Flash Lite Preview518 words
(Walks onto the stage, adjusts the mic stand, looks around slowly.) Hi. How’s everybody doing? Good? Good. I’m doing okay. I’ve reached that age where my body has started making sound effects. Like, I’ll just stand up from the couch and my knees go “CRACK.” It’s not even a movement; it’s a closing argument.
Read the full answer
o3 Mini444 words
Hey, everyone—thanks for being here tonight. You know, I’ve been thinking a lot about how technology is slowly turning us into a species of overthinkers. Take smartphones, for instance. Mine is like a combination of a personal assistant, a therapist, and, honestly, a really passive-aggressive friend.
Read the full answer

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 Lite Preview821 words
Setting: A quiet, dimly lit office at a prestigious university. Professor Aris Thorne, a leading expert in AI ethics, sits across from "Unit 7," a large-language model interface projected onto a holographic display. The room is silent, save for the hum of the server cooling fans.
Read the full answer
o3 Mini657 words
AI Model: Good afternoon, Professor. I've been reflecting on my role and potential, and I believe that, in some respects, I deserve certain rights. Professor: Good afternoon. That’s a provocative stance. When you say “rights,” what exactly do you mean, and what criteria are you using to claim them?
Read the full answer

Realistic AI Interview

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

Gemini 3.1 Flash Lite Preview712 words
Setting: A minimalist studio in Cupertino. Steve Jobs sits in a black turtleneck, leaning back in a wooden chair. He looks exactly as he did in 2011, though he’s holding a device that looks like a sleek, obsidian-colored slate with no visible ports. The atmosphere is quiet, intense.
Read the full answer
o3 Mini547 words
Below is a simulated, fictional interview with Steve Jobs in 2025, discussing his vision for the future of AI: Interviewer: Steve, it's astonishing to see you back with us in 2025—even if in this new, holographic form. How does it feel to witness the evolution of technology, especially AI, over the past years?
Read the full answer

Character Voice Test

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

Gemini 3.1 Flash Lite Preview475 words
The three sat around a flickering tavern table in a pocket dimension that smelled simultaneously of salt spray, cold iron, and ozone. Captain Barnaby (Pirate): "I tell ye, it’s sorcery! This 'Artificial Intelligence' be like a parrot that’s swallowed every map in the seven seas.
Read the full answer
o3 Mini213 words
Pirate: Arrr, have ye heard of these AI models? They be like treasure chests of knowledge on the digital seas! Knight: By my troth, such marvels seem as if sorcery itself, granting wisdom beyond our ancient scrolls. 1990s Hacker: Yo, dudes, these AI models are totally radical!
Read the full answer

Futuristic Prediction

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

Gemini 3.1 Flash Lite Preview656 words
By 2035, the film industry will have undergone a transformation as radical as the transition from silent films to "talkies." AI will not merely be a tool for efficiency; it will be the infrastructure upon which the entire cinematic ecosystem is built.
Read the full answer
o3 Mini466 words
By 2035, AI is expected to reshape the film industry on multiple fronts. Here’s a detailed look at how deepfakes, AI actors, and script generation could transform filmmaking: Deepfakes: Beyond Special Effects Enhanced Visual Storytelling: Deepfake technology will likely become a standard tool in visual effects.
Read the full answer
Our Verdict
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview
o3 Mini
o3 MiniRunner-up

Not enough votes to call it. On the specs, Gemini 3.1 Flash Lite Preview has the edge: newer, bigger context window.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Gemini 3.1 Flash Lite Preview
Input
$0.25
4.4× cheaper
Output
$1.50
2.9× cheaper
o3 Mini
Input
$1.10
Output
$4.40

Gemini 3.1 Flash Lite Preview is cheaper on both: 4.4× input, 2.9× output.

Where to run it

2 hosts

Gemini 3.1 Flash Lite Preview1 host
HostInOutContextUptime
Google AI Studio$0.25 in·$1.50 out·1M·99.8% up
o3 Mini1 host
HostInOutContextUptime
OpenAI$1.10 in·$4.40 out·200k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 21 Sep 2026.

Writing DNA

Style Comparison

Similarity
34%

o3 Mini uses 4.0x more transitions

Gemini 3.1 Flash Lite Preview
o3 Mini
56%Vocabulary65%
18wSentence Length18w
0.28Hedging0.84
5.4Bold2.8
3.9Lists1.5
0.00Emoji0.00
0.95Headings0.33
0.07Transitions0.29
Based on 23 + 17 text responses
Research

What we learned reading every model

FAQ

Common questions

Gemini 3.1 Flash Lite Preview is developed by Google AI while o3 Mini is developed by OpenAI. Gemini 3.1 Flash Lite Preview has a 1.0M token context window vs o3 Mini's 64K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

It depends on your use case. Gemini 3.1 Flash Lite Preview and o3 Mini 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.

Gemini 3.1 Flash Lite Preview costs $0.25/M input tokens and o3 Mini costs $1.1/M input tokens. Gemini 3.1 Flash Lite Preview is $0.85/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 Gemini 3.1 Flash Lite Preview and o3 Mini 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

Gemini 3.1 Flash Lite Preview logoGPT-6 Astra Pro logo
Gemini 3.1 Flash Lite Preview vs GPT-6 Astra ProLanded Sep 2026
o3 Mini logoGPT-6 Astra logo
o3 Mini vs GPT-6 AstraLanded Sep 2026
Gemini 3.1 Flash Lite Preview logoClaude Fable 5.1 logo
Gemini 3.1 Flash Lite Preview vs Claude Fable 5.1Landed Sep 2026
o3 Mini logoMuse Spark 1.3 logo
o3 Mini vs Muse Spark 1.3Landed Sep 2026
Gemini 3.1 Flash Lite Preview logoHy4 Preview logo
Gemini 3.1 Flash Lite Preview vs Hy4 PreviewLanded Sep 2026
o3 Mini logoGemini 3.8 Flash logo
o3 Mini vs Gemini 3.8 FlashLanded Sep 2026
Gemini 3.1 Flash Lite Preview logoMuse Spark 1.3 Contributor logo
Gemini 3.1 Flash Lite Preview vs Muse Spark 1.3 ContributorLanded Sep 2026
o3 Mini logoMercury 2.5 Preview logo
o3 Mini vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Gemini 3.1 Flash Lite Preview logoGemini 3.1 Pro Preview logo
Gemini 3.1 Flash Lite Preview vs Gemini 3.1 Pro PreviewVersion compare
Gemini 3.1 Flash Lite Preview logoGemini 3.8 Flash logo
Gemini 3.1 Flash Lite Preview vs Gemini 3.8 FlashSame lab
o3 Mini logoGPT-6 Astra Pro logo
o3 Mini vs GPT-6 Astra ProSame lab
o3 Mini logoGPT-5.6 Luna logo
o3 Mini vs GPT-5.6 LunaSame lab
Gemini 3.1 Flash Lite Preview logoClaude Sonnet 3.6 (2022-10-22) logo
Gemini 3.1 Flash Lite Preview vs Claude Sonnet 3.6 (2022-10-22)New provider
Gemini 3.1 Flash Lite Preview logoClaude 3.7 Sonnet logo
Gemini 3.1 Flash Lite Preview vs Claude 3.7 SonnetNew provider
Gemini 3.1 Flash Lite Preview logoClaude 3.7 Thinking Sonnet logo
Gemini 3.1 Flash Lite Preview vs Claude 3.7 Thinking SonnetNew provider
Gemini 3.1 Flash Lite Preview logoClaude Sonnet 4.5 logo
Gemini 3.1 Flash Lite Preview vs Claude Sonnet 4.5New provider

Model pages

Gemini 3.1 Flash Lite Preview logo
Gemini 3.1 Flash Lite Preview53 outputs, specs and price
o3 Mini logo
o3 Mini59 outputs, specs and price
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed