What is the difference between MiMo-V2-Omni and OpenAI o4-mini?

MiMo-V2-Omni is developed by Xiaomi while OpenAI o4-mini is developed by OpenAI. You can compare their actual outputs across 34 challenges on Rival to see how they differ in practice.

Which is better, MiMo-V2-Omni or OpenAI o4-mini?

It depends on your use case. MiMo-V2-Omni and OpenAI o4-mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 34 challenges so you can judge which fits your needs best.

How much does MiMo-V2-Omni cost compared to OpenAI o4-mini?

MiMo-V2-Omni costs $0.4/M input tokens and OpenAI o4-mini costs $1.1/M input tokens. MiMo-V2-Omni is $0.70/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 MiMo-V2-Omni and OpenAI o4-mini on Rival?

This page shows a side-by-side comparison of MiMo-V2-Omni and OpenAI o4-mini 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 Mar 18, 2026

MiMo-V2-OmnivsOpenAI o4-mini

34 fights queued

Why MiMo-V2-Omni?

2.3x cheaper overall$0.40/M in · $2.00/M out

11 months newerMar 2026

Why OpenAI o4-mini?

Dead even. This one's a coin flip.

MiMo-V2-OmniOpenAI o4-mini

Input price

$0.40/M

$1.10/M

Output price

$2.00/M

$4.40/M

Context

262K

—

Released

Mar 2026

Apr 2025

Favorites

MiMo-V2-OmniOpenAI o4-mini

Movie

The Shawshank Redemption

19948.7

The Shawshank Redemption

19948.7

Album

Abbey Road

The Beatles

—

Book

Gödel, Escher, Bach

Douglas R. Hofstadter

—

City

Beijing

China

—

Game

Journey

Family, Indie4.3

—

12 / 34

Estimate Complexityreasoning

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

MiMo-V2-Omni

Xiaomi · Mar 2026text

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

MiMo-V2-Omni vs OpenAI o4-mini

Which is better, MiMo-V2-Omni or OpenAI o4-mini?