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 PreviewvsGPT-5.1 Codex Max
Updated Mar 2026

Gemini 3.1 Flash Lite PreviewvsGPT-5.1 Codex Max

Gemini 3.1 Flash Lite Preview is the newer model, released after GPT-5.1 Codex Max.

Gemini 3.1 Flash Lite Preview and GPT-5.1 Codex Max compared across 52 shared prompts
SpecGemini 3.1 Flash Lite PreviewGPT-5.1 Codex Max
Input price$0.25/M tokens—
Output price$1.5/M tokens—
Context window1.0M tokens—
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedMar 2026Dec 2025
Our Verdict
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview
GPT-5.1 Codex Max
GPT-5.1 Codex Max

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 Preview
Input
$0.25
Output
$1.50
GPT-5.1 Codex Max
Input
—
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·98.8% up
GPT-5.1 Codex Max1 host
HostInOutContextUptime
Azure AI Foundry$1.25 in·$10.00 out·400k·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.

Writing DNA

Style Comparison

Similarity
56%

Gemini 3.1 Flash Lite Preview uses 7.7x more headings

Gemini 3.1 Flash Lite Preview
GPT-5.1 Codex Max
56%Vocabulary60%
18wSentence Length16w
0.28Hedging0.36
5.4Bold2.3
3.9Lists4.2
0.00Emoji0.00
0.95Headings0.12
0.07Transitions0.03
Based on 23 + 13 text responses
Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

GPT-5.1 Codex Max logoOx Alpha logo
GPT-5.1 Codex Max vs Ox AlphaNew provider
GPT-5.1 Codex Max logoGemini 3.1 Flash Lite logo
GPT-5.1 Codex Max vs Gemini 3.1 Flash LiteCross-provider
GPT-5.1 Codex Max logoLlama 4 Maverick logo
GPT-5.1 Codex Max vs Llama 4 MaverickNew provider
GPT-5.1 Codex Max logoInkling logo
GPT-5.1 Codex Max vs InklingNew provider
Gemini 3.1 Flash Lite Preview logoLlama 3.1 405B logo
Gemini 3.1 Flash Lite Preview vs Llama 3.1 405BNew provider
Gemini 3.1 Flash Lite Preview logoLlama 3.1 70B (Instruct) logo
Gemini 3.1 Flash Lite Preview vs Llama 3.1 70B (Instruct)New provider
GPT-5.1 Codex Max logoLlama 4 Scout logo
GPT-5.1 Codex Max vs Llama 4 ScoutNew provider
Gemini 3.1 Flash Lite Preview logoMercury logo
Gemini 3.1 Flash Lite Preview vs MercuryNew provider
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