What is the difference between Claude Opus 4.1 and GPT-3.5 Turbo?

Claude Opus 4.1 is developed by Anthropic while GPT-3.5 Turbo is developed by OpenAI. Claude Opus 4.1 has a 200K token context window vs GPT-3.5 Turbo's 16K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.1 or GPT-3.5 Turbo?

It depends on your use case. Claude Opus 4.1 and GPT-3.5 Turbo each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does Claude Opus 4.1 cost compared to GPT-3.5 Turbo?

Claude Opus 4.1 costs $15/M input tokens and GPT-3.5 Turbo costs $1.5/M input tokens. GPT-3.5 Turbo is $13.50/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 Claude Opus 4.1 and GPT-3.5 Turbo on Rival?

This page shows a side-by-side comparison of Claude Opus 4.1 and GPT-3.5 Turbo 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-3.5 Turbo

GPT-3.5 Turbo is cheaper than Claude Opus 4.1 at $1.5/M vs $15/M input tokens.

Claude Opus 4.1 and GPT-3.5 Turbo compared across 53 shared prompts
Spec	Claude Opus 4.1	GPT-3.5 Turbo
Input price	$15/M tokens	$1.5/M tokens
Output price	$75/M tokens	$2/M tokens
Context window	200K tokens	16K tokens
Parameters	Not disclosed	Not disclosed
Weights	Closed	Closed
Free API (OpenRouter)	No	No
Released	Aug 2025	Mar 2022