What is the difference between Claude Opus 4.1 and GPT-4?

Claude Opus 4.1 is developed by Anthropic while GPT-4 is developed by OpenAI. Claude Opus 4.1 has a 200K token context window vs GPT-4's 8K. You can compare their actual outputs across 26 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.1 or GPT-4?

It depends on your use case. Claude Opus 4.1 and GPT-4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 26 challenges so you can judge which fits your needs best.

How much does Claude Opus 4.1 cost compared to GPT-4?

Claude Opus 4.1 costs $15/M input tokens and GPT-4 costs $30/M input tokens. Claude Opus 4.1 is $15.00/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 Claude Opus 4.1 and GPT-4 on Rival?

This page shows a side-by-side comparison of Claude Opus 4.1 and GPT-4 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 Aug 2025

Claude Opus 4.1vsGPT-4

Claude Opus 4.1 is cheaper than GPT-4 at $15/M vs $30/M input tokens.

Claude Opus 4.1 and GPT-4 compared across 26 shared prompts
Spec	Claude Opus 4.1	GPT-4
Input price	$15/M tokens	$30/M tokens
Output price	$75/M tokens	$60/M tokens
Context window	200K tokens	8K tokens
Parameters	Not disclosed	Not disclosed
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	Aug 2025	May 2023