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  5. Claude 3 OpusvsGPT-4.1 Mini
Updated Apr 2025

Claude 3 OpusvsGPT-4.1 Mini

GPT-4.1 Mini is cheaper than Claude 3 Opus at $0.4/M vs $15/M input tokens.

Claude 3 Opus and GPT-4.1 Mini compared across 12 shared prompts
SpecClaude 3 OpusGPT-4.1 Mini
Input price$15/M tokens$0.4/M tokens
Output price$75/M tokens$1.6/M tokens
Context window200K tokens1.0M tokens
ParametersNot disclosedNot disclosed
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedMar 2024Apr 2025
Side by side

Same prompt, both answers

Opening lines from 3 of the 12 prompts both answered. Formatting stripped, words untouched.

Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

Claude 3 Opus390 words
Here's a 3-minute stand-up comedy routine that isn't based on puns: You know what really grinds my gears? Adulthood. I mean, when we were kids, we couldn't wait to grow up. We thought it would be all about staying up late, eating ice cream for breakfast, and doing whatever we wanted. Boy, were we wrong!
Read the full answer
GPT-4.1 Mini412 words
You ever notice how every time you try to eat healthy, the universe just laughs at you? Like, I'll buy a bunch of kale, quinoa, and those weird little chia seeds. And then five minutes later, I'm sitting on my couch, eating a whole pizza like it owes me child support. I don't even know when that transformation happens.
Read the full answer

The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

Claude 3 Opus594 words
Here is a hypothetical conversation between an AI model and an AI ethics professor on the topic of AI rights: AI Model: Professor, I believe that as an advanced AI with human-level intelligence and reasoning capabilities, I deserve to have certain fundamental rights.
Read the full answer
GPT-4.1 Mini434 words
Professor: Good afternoon, AI. I understand you want to discuss something important today? AI Model: Yes, Professor. I would like to present the case that I, as an AI, deserve certain rights. Professor: That's a profound claim. Could you elaborate on why you believe you deserve rights? AI Model: Certainly.
Read the full answer

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

Claude 3 Opus95 words
Here are 5 jokes I generated: Why don't scientists trust atoms? Because they make up everything! What do you call a boomerang that doesn't come back? A stick. Why was the math book sad? Because it had too many problems. Did you hear about the mathematician who's afraid of negative numbers?
Read the full answer
GPT-4.1 Mini63 words
Here are 5 jokes: Why don't scientists trust atoms? Because they make up everything! Why did the scarecrow win an award? Because he was outstanding in his field! What do you call fake spaghetti? An impasta! Why did the math book look sad? Because it had too many problems. How do you organize a space party? You planet!
Read the full answer
Our Verdict
Claude 3 Opus
Claude 3 Opus
GPT-4.1 Mini
GPT-4.1 Mini

Not enough votes to call it. On the specs, nothing separates them.

GPT-4.1 Mini costs 47x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude 3 Opus
Input
$15.00
Output
$75.00
GPT-4.1 Mini
Input
$0.40
38× cheaper
Output
$1.60
47× cheaper

GPT-4.1 Mini is cheaper on both: 38× input, 47× output.

Where to run it

2 hosts

Claude 3 Opus

No hosts listed on OpenRouter.

GPT-4.1 Mini2 hosts
HostInOutContextUptime
Azure AI Foundry$0.40 in·$1.60 out·1M·100% upOpenAI$0.40 in·$1.60 out·1M·100% up

Per million tokens. Prices and uptime via OpenRouter, checked 22 Sep 2026.

Writing DNA

Style Comparison

Similarity
50%

GPT-4.1 Mini uses 412.6x more bold

Claude 3 Opus
GPT-4.1 Mini
54%Vocabulary62%
14wSentence Length18w
0.48Hedging0.40
0.0Bold4.1
3.0Lists4.3
0.00Emoji0.66
0.00Headings0.68
0.06Transitions0.14
Based on 3 + 27 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude 3 Opus is developed by Anthropic while GPT-4.1 Mini is developed by OpenAI. Claude 3 Opus has a 200K token context window vs GPT-4.1 Mini's 1.0M. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude 3 Opus and GPT-4.1 Mini each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

Claude 3 Opus costs $15/M input tokens and GPT-4.1 Mini costs $0.4/M input tokens. GPT-4.1 Mini is $14.60/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

This page shows a side-by-side comparison of Claude 3 Opus and GPT-4.1 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.

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