What is the difference between GPT-5 Pro and OpenAI o4-mini?

Both are developed by OpenAI but target different use cases. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

Which is better, GPT-5 Pro or OpenAI o4-mini?

It depends on your use case. GPT-5 Pro and OpenAI o4-mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

How much does GPT-5 Pro cost compared to OpenAI o4-mini?

GPT-5 Pro costs $15/M input tokens and OpenAI o4-mini costs $1.1/M input tokens. OpenAI o4-mini is $13.90/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-5 Pro and OpenAI o4-mini on Rival?

This page shows a side-by-side comparison of GPT-5 Pro and OpenAI o4-mini 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 Oct 2025

GPT-5 ProvsOpenAI o4-mini

OpenAI o4-mini is cheaper than GPT-5 Pro at $1.1/M vs $15/M input tokens.

GPT-5 Pro and OpenAI o4-mini compared across 42 shared prompts
Spec	GPT-5 Pro	OpenAI o4-mini
Input price	$15/M tokens	$1.1/M tokens
Output price	$120/M tokens	$4.4/M tokens
Context window	400K tokens	—
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	Oct 2025	Apr 2025
SWE-bench Verified	74.9%	68.1%