What is the difference between GPT-5 Codex and GPT-5 Pro?

Both are developed by OpenAI but target different use cases. You can compare their actual outputs across 40 challenges on Rival to see how they differ in practice.

Which is better, GPT-5 Codex or GPT-5 Pro?

It depends on your use case. GPT-5 Codex and GPT-5 Pro each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 40 challenges so you can judge which fits your needs best.

How can I compare GPT-5 Codex and GPT-5 Pro on Rival?

This page shows a side-by-side comparison of GPT-5 Codex and GPT-5 Pro 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 CodexvsGPT-5 Pro

GPT-5 Pro is the newer model, released after GPT-5 Codex.

GPT-5 Codex and GPT-5 Pro compared across 40 shared prompts
Spec	GPT-5 Codex	GPT-5 Pro
Input price	—	$15/M tokens
Output price	—	$120/M tokens
Context window	—	400K tokens
Weights	—	Closed
Free API (OpenRouter)	No	No
Released	Sep 2025	Oct 2025
SWE-bench Verified	74.5%	74.9%