What is the difference between GPT-4o (Omni) and MiniMax M3?

GPT-4o (Omni) is developed by OpenAI while MiniMax M3 is developed by MiniMax. GPT-4o (Omni) has a 128K token context window vs MiniMax M3's 1.0M. You can compare their actual outputs across 52 challenges on Rival to see how they differ in practice.

Which is better, GPT-4o (Omni) or MiniMax M3?

It depends on your use case. GPT-4o (Omni) and MiniMax M3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 52 challenges so you can judge which fits your needs best.

How much does GPT-4o (Omni) cost compared to MiniMax M3?

GPT-4o (Omni) costs $2.5/M input tokens and MiniMax M3 costs $0.3/M input tokens. MiniMax M3 is $2.20/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-4o (Omni) and MiniMax M3 on Rival?

This page shows a side-by-side comparison of GPT-4o (Omni) and MiniMax M3 across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated Jun 2026

GPT-4o (Omni)vsMiniMax M3

MiniMax M3 is cheaper than GPT-4o (Omni) at $0.3/M vs $2.5/M input tokens.

GPT-4o (Omni) and MiniMax M3 compared across 52 shared prompts
Spec	GPT-4o (Omni)	MiniMax M3
Input price	$2.5/M tokens	$0.3/M tokens
Output price	$10/M tokens	$1.2/M tokens
Context window	128K tokens	1.0M tokens
Weights	Closed	Open
Free API (OpenRouter)	No	No
Released	May 2024	Jun 2026