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  5. Claude 3 OpusvsNova Premier 1.0
Updated Oct 2025

Claude 3 OpusvsNova Premier 1.0

Nova Premier 1.0 is cheaper than Claude 3 Opus at $2.5/M vs $15/M input tokens.

Claude 3 Opus and Nova Premier 1.0 compared across 11 shared prompts
SpecClaude 3 OpusNova Premier 1.0
Input price$15/M tokens$2.5/M tokens
Output price$75/M tokens$12.5/M tokens
Context window200K tokens1.0M tokens
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedMar 2024Oct 2025
Side by side

Same prompt, both answers

Opening lines from 2 of the 11 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
Nova Premier 1.0333 words
Ladies and gentlemen, ever notice how people treat their phones like they’re precious artifacts? We all have those moments where we swipe and scroll like our lives depend on it. You're on the bus, everyone’s glued to their screens. It's like zombies, but instead of brains, we crave likes and retweets.
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
Nova Premier 1.098 words
Why don't scientists trust atoms? Because they make up everything! Why couldn't the bicycle stand up by itself? It was two-tired. I told my wife she was drawing her eyebrows too high. She looked surprised. Parallel lines have so much in common. It’s a shame they’ll never meet.
Read the full answer
Our Verdict
Claude 3 Opus
Claude 3 Opus
Nova Premier 1.0
Nova Premier 1.0

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

Nova Premier 1.0 costs 6.0x 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
Nova Premier 1.0
Input
$2.50
6.0× cheaper
Output
$12.50
6.0× cheaper

Nova Premier 1.0 is cheaper on both: 6.0× input, 6.0× output.

Where to run it

1 host

Claude 3 Opus

No hosts listed on OpenRouter.

Nova Premier 1.01 host
HostInOutContext
Amazon Bedrock$2.50 in·$12.50 out·1M

Per million tokens. Prices and uptime via OpenRouter, checked 21 Sep 2026.

Writing DNA

Style Comparison

Similarity
30%

Nova Premier 1.0 uses 427.0x more bold

Claude 3 Opus
Nova Premier 1.0
54%Vocabulary56%
14wSentence Length39w
0.48Hedging0.90
0.0Bold4.3
3.0Lists5.9
0.00Emoji0.00
0.00Headings0.54
0.06Transitions0.21
Based on 3 + 23 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude 3 Opus is developed by Anthropic while Nova Premier 1.0 is developed by Amazon. Claude 3 Opus has a 200K token context window vs Nova Premier 1.0's 1.0M. You can compare their actual outputs across 11 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude 3 Opus and Nova Premier 1.0 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 11 challenges so you can judge which fits your needs best.

Claude 3 Opus costs $15/M input tokens and Nova Premier 1.0 costs $2.5/M input tokens. Nova Premier 1.0 is $12.50/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 Nova Premier 1.0 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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Model pages

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