What is the difference between GPT-4o (Omni) and OpenAI o3?

Both are developed by OpenAI but target different use cases. You can compare their actual outputs across 54 challenges on Rival to see how they differ in practice.

Which is better, GPT-4o (Omni) or OpenAI o3?

It depends on your use case. GPT-4o (Omni) and OpenAI o3 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 54 challenges so you can judge which fits your needs best.

How much does GPT-4o (Omni) cost compared to OpenAI o3?

GPT-4o (Omni) costs $2.5/M input tokens and OpenAI o3 costs $10/M input tokens. GPT-4o (Omni) is $7.50/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 OpenAI o3 on Rival?

This page shows a side-by-side comparison of GPT-4o (Omni) and OpenAI o3 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 Apr 2025

GPT-4o (Omni)vsOpenAI o3

GPT-4o (Omni) is cheaper than OpenAI o3 at $2.5/M vs $10/M input tokens.

GPT-4o (Omni) and OpenAI o3 compared across 54 shared prompts
Spec	GPT-4o (Omni)	OpenAI o3
Input price	$2.5/M tokens	$10/M tokens
Output price	$10/M tokens	$40/M tokens
Context window	128K tokens	—
Parameters	Not disclosed	Not disclosed
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	May 2024	Apr 2025