What is the difference between GPT-4.1 Mini and Kimi K2?

GPT-4.1 Mini is developed by OpenAI while Kimi K2 is developed by Moonshot AI. You can compare their actual outputs across 35 challenges on Rival to see how they differ in practice.

Which is better, GPT-4.1 Mini or Kimi K2?

It depends on your use case. GPT-4.1 Mini and Kimi K2 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 35 challenges so you can judge which fits your needs best.

How much does GPT-4.1 Mini cost compared to Kimi K2?

GPT-4.1 Mini costs $0.4/M input tokens and Kimi K2 costs $0.57/M input tokens. GPT-4.1 Mini is $0.17/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare GPT-4.1 Mini and Kimi K2 on Rival?

This page shows a side-by-side comparison of GPT-4.1 Mini and Kimi K2 across shared challenges. You can vote on which model produced the better output, and Pro users can create custom challenges to test both models with their own prompts.

Rival

Updated Jul 11, 2025

GPT-4.1 MinivsKimi K2

35 fights queued

Why GPT-4.1 Mini?

1.4x cheaper overall$0.40/M in · $1.60/M out

Why Kimi K2?

3 months newerJul 2025

GPT-4.1 MiniKimi K2

Input price

$0.40/M

$0.57/M

Output price

$1.60/M

$2.30/M

Context

1.0M

—

Released

Apr 2025

Jul 2025

Favorites

GPT-4.1 MiniKimi K2

Movie

Inception

20108.4

Blade Runner

19827.9

Album

Dark Side Of The Moon

suisside

Dark Side Of The Moon

suisside

Book

Sapiens

Yuval Noah Harari

The Left Hand of Darkness

Ursula K. Le Guin

City

Tokyo

Japan

Kyoto

Japan

Game

The Legend of Zelda: Breath of the Wild

Adventure, Action4.5

Outer Wilds

Indie, Adventure4.4

12 / 35

Estimate Complexityreasoning

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

GPT-4.1 Mini

Openai · Apr 2025text

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

GPT-4.1 Mini vs Kimi K2

Which is better, GPT-4.1 Mini or Kimi K2?