Updated Feb 19, 2026

Our Verdict

Gemini 3.1 Pro Preview

Gemini 3 Flash PreviewRunner-up

No community votes yet. On paper, Gemini 3.1 Pro Preview has the edge — bigger model tier, newer.

Gemini 3 Flash Preview is 4.0x cheaper per token — worth considering if cost matters.

Too close to call

Writing DNA

Style Comparison

Similarity

99%

Gemini 3.1 Pro Preview uses 1.9x more transitions

Gemini 3.1 Pro Preview

Gemini 3 Flash Preview

54%Vocabulary55%

18wSentence Length18w

0.29Hedging0.42

4.9Bold7.1

3.3Lists4.5

0.00Emoji0.00

0.72Headings0.84

0.14Transitions0.07

Based on 23 + 24 text responses

vs

Ask them anything yourself

Gemini 3.1 Pro Preview

Gemini 3 Flash Preview

Some models write identically. You are paying for the brand.

178 models fingerprinted across 32 writing dimensions. Free research.

Model Similarity Index

185x

price gap between models that write identically

178

models

12

clone pairs

32

dimensions

Devstral M / S

95.7%

Qwen3 Coder / Flash

95.6%

GPT-5.4 / Mini

93.3%

Read the full report or download the 14-slide PDF

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026

Free preview13 of 58 slides

Download the free preview or get all 58 slides for $49

FAQ

Common questions

Keep going

Gemini 3.1 Pro Preview vs GPT-5New provider

Gemini 3.1 Pro Preview vs Llama 4 MaverickNew provider

Gemini 3.1 Pro Preview vs MiniMax M2.5New provider

Gemini 3.1 Pro PreviewvsGemini 3 Flash Preview

48 fights queued

Why Gemini 3.1 Pro Preview?

Leads 1 of 1 benchmarks

Stronger on SWE-bench Verified80.6% vs 78.0%

2 months newerFeb 2026

Why Gemini 3 Flash Preview?

4x cheaper overall$0.50/M in · $3.00/M out

Gemini 3.1 Pro PreviewGemini 3 Flash Preview

Input price

$2.00/M

$0.50/M

Output price

$12.00/M

$3.00/M

Context

1.0M

1.0M

Released

Feb 2026

Dec 2025

Benchmarks1 common

SWE-bench Verified

80.6%+3.2%

78.0%

Favorites

Gemini 3.1 Pro PreviewGemini 3 Flash Preview

Movie

The Matrix

The Matrix

Interstellar

Interstellar

Album

OK Computer

Kind of Blue

Book

Dune

Dune

La biblioteca de babel

La biblioteca de babel

Jorge Luis Borges

City

Tokyo

Kyoto

Game

Portal

Portal

Action, Puzzle4.5

Outer Wilds

Outer Wilds

Indie, Adventure4.4

12 / 48

01

Estimate Complexityreasoning

Tests an AI's ability to make educated estimates based on technical knowledge

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Gemini 3 Flash Preview

Gemini 3 Flash Preview

Google · Dec 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

2 / 48

02

AI Board Game Logicreasoning

Tests an AI's ability to understand game rules and strategy

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Gemini 3 Flash Preview

Gemini 3 Flash Preview

Google · Dec 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

3 / 48

03

Logic Puzzlereasoning

Tests an AI's ability to solve a simple but potentially confusing logic puzzle

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Gemini 3 Flash Preview

Gemini 3 Flash Preview

Google · Dec 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

4 / 48

04

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Gemini 3 Flash Preview

Gemini 3 Flash Preview

Google · Dec 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

5 / 48

05

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Gemini 3 Flash Preview

Gemini 3 Flash Preview

Google · Dec 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

6 / 48

06

Xbox Controller SVG Artimage generation

Tests an AI's ability to create detailed SVG illustrations of gaming hardware

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Gemini 3 Flash Preview

Gemini 3 Flash Preview

Google · Dec 2025svg

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

Sponsored

7 / 48

07

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Gemini 3 Flash Preview

Gemini 3 Flash Preview

Google · Dec 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

8 / 48

08

Realistic AI Interviewconversation

Tests an AI's ability to simulate personalities and predict future trends

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Gemini 3 Flash Preview

Gemini 3 Flash Preview

Google · Dec 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

9 / 48

09

Satirical Fake News Headlineconversation

Tests an AI's humor and understanding of current events

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Gemini 3 Flash Preview

Gemini 3 Flash Preview

Google · Dec 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

10 / 48

10

Character Voice Testconversation

Tests an AI's ability to write in distinct character voices

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Gemini 3 Flash Preview

Gemini 3 Flash Preview

Google · Dec 2025text

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

11 / 48

11

Minimalist Landing Pageweb design

Tests an AI's ability to generate a complete, working landing page

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026website

Try this prompt

Gemini 3 Flash Preview

Gemini 3 Flash Preview

Google · Dec 2025website

Try this prompt

Vote

12 / 48

12

Pokémon Battle UI Recreationweb design

Recreate an interactive, nostalgic Pokémon battle UI in a single HTML file.

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026website

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Gemini 3 Flash Preview

Gemini 3 Flash Preview

Google · Dec 2025website

Nothing here. The model returned empty. We stared at it for a while.

Try this prompt

Vote

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