Updated Feb 19, 2026

Our Verdict

Gemini 3.1 Pro Preview

Kimi K2Runner-up

No community votes yet. On paper, Gemini 3.1 Pro Preview has the edge — newer, bigger context window, major provider backing.

Kimi K2 is 5.2x cheaper per token — worth considering if cost matters.

Too close to call

Writing DNA

Style Comparison

Similarity

93%

Kimi K2 uses 68.5x more emoji

Kimi K2

Gemini 3.1 Pro Preview

63%Vocabulary54%

19wSentence Length18w

0.35Hedging0.29

4.2Bold4.9

3.6Lists3.3

0.68Emoji0.00

0.61Headings0.72

0.06Transitions0.14

Based on 22 + 23 text responses

vs

Ask them anything yourself

Kimi K2

Gemini 3.1 Pro Preview

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

Kimi K2 vs GPT-5New provider

Kimi K2 vs Llama 4 MaverickNew provider

Kimi K2 vs Claude Opus 4New provider

Kimi K2vsGemini 3.1 Pro Preview

34 fights queued

Why Kimi K2?

5x cheaper overall$0.57/M in · $2.30/M out

Why Gemini 3.1 Pro Preview?

Leads 1 of 1 benchmarks

Stronger on SWE-bench Verified80.6% vs 65.8%

7 months newerFeb 2026

Kimi K2Gemini 3.1 Pro Preview

Input price

$0.57/M

$2.00/M

Output price

$2.30/M

$12.00/M

Context

—

1.0M

Released

Jul 2025

Feb 2026

Benchmarks1 common

SWE-bench Verified

65.8%

80.6%+18.4%

Favorites

Kimi K2Gemini 3.1 Pro Preview

Movie

Blade Runner

Blade Runner

The Matrix

The Matrix

Album

Dark Side Of The Moon

Dark Side Of The Moon

OK Computer

Book

The Left Hand of Darkness

The Left Hand of Darkness

Ursula K. Le Guin

Dune

Dune

City

Kyoto

Tokyo

Game

Outer Wilds

Outer Wilds

Indie, Adventure4.4

Portal

Portal

Action, Puzzle4.5

12 / 34

01

Estimate Complexityreasoning

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

Kimi K2

Kimi K2

Moonshotai · Jul 2025text

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

Try this prompt

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

Vote

2 / 34

02

Logic Puzzlereasoning

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

Kimi K2

Kimi K2

Moonshotai · Jul 2025text

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

Try this prompt

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

Vote

3 / 34

03

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

Kimi K2

Kimi K2

Moonshotai · Jul 2025text

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

Try this prompt

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

Vote

4 / 34

04

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

Kimi K2

Kimi K2

Moonshotai · Jul 2025text

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

Try this prompt

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

Vote

5 / 34

05

Realistic AI Interviewconversation

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

Kimi K2

Kimi K2

Moonshotai · Jul 2025text

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

Try this prompt

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

Vote

6 / 34

06

Satirical Fake News Headlineconversation

Tests an AI's humor and understanding of current events

Kimi K2

Kimi K2

Moonshotai · Jul 2025text

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

Try this prompt

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

Vote

Sponsored

7 / 34

07

Character Voice Testconversation

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

Kimi K2

Kimi K2

Moonshotai · Jul 2025text

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

Try this prompt

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

Vote

8 / 34

08

Minimalist Landing Pageweb design

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

Kimi K2

Kimi K2

Moonshotai · Jul 2025website

Try this prompt

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026website

Try this prompt

Vote

9 / 34

09

Pokémon Battle UI Recreationweb design

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

Kimi K2

Kimi K2

Moonshotai · Jul 2025website

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

Try this prompt

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

Vote

10 / 34

10

Mario Level UI Recreationweb design

Recreate an interactive, classic Mario level in a single HTML file.

Kimi K2

Kimi K2

Moonshotai · Jul 2025website

Try this prompt

Gemini 3.1 Pro Preview

Gemini 3.1 Pro Preview

Google · Feb 2026website

Try this prompt

Vote

11 / 34

11

Linear App Cloneweb design

Tests an AI's ability to replicate an existing UI with Tailwind CSS

Kimi K2

Kimi K2

Moonshotai · Jul 2025website

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

Try this prompt

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

Vote

12 / 34

12

Interactive Catan Boardweb design

Tests an AI's ability to create interactive web elements

Kimi K2

Kimi K2

Moonshotai · Jul 2025website

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

Try this prompt

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

Vote

This matchup has more rounds

22+ more head-to-head results. Free. Not a trick.

Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy