What is the difference between Claude Opus 4 and GPT-1?

Claude Opus 4 is developed by Anthropic while GPT-1 is developed by OpenAI. Claude Opus 4 has a 200K token context window vs GPT-1's 1K. You can compare their actual outputs across 7 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4 or GPT-1?

It depends on your use case. Claude Opus 4 and GPT-1 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 7 challenges so you can judge which fits your needs best.

How can I compare Claude Opus 4 and GPT-1 on Rival?

This page shows a side-by-side comparison of Claude Opus 4 and GPT-1 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 May 2025

Claude Opus 4vsGPT-1

Claude Opus 4 has a larger context window than GPT-1 (200K tokens vs 1K tokens).

Claude Opus 4 and GPT-1 compared across 7 shared prompts
Spec	Claude Opus 4	GPT-1
Input price	$15/M tokens	—
Output price	$75/M tokens	—
Context window	200K tokens	1K tokens
Parameters	Not disclosed	117M
Weights	Closed	Open
Free API (OpenRouter)	No	—
Released	May 2025	Jun 2018