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  5. Claude 3 OpusvsGemini 2.5 Pro Preview 06-05
Updated Jun 2025

Claude 3 OpusvsGemini 2.5 Pro Preview 06-05

Gemini 2.5 Pro Preview 06-05 is cheaper than Claude 3 Opus at $1.25/M vs $15/M input tokens.

Claude 3 Opus and Gemini 2.5 Pro Preview 06-05 compared across 10 shared prompts
SpecClaude 3 OpusGemini 2.5 Pro Preview 06-05
Input price$15/M tokens$1.25/M tokens
Output price$75/M tokens$10/M tokens
Context window200K tokens1.0M tokens
ParametersNot disclosedNot disclosed
Weights—Closed
Free API (OpenRouter)NoNo
ReleasedMar 2024Jun 2025
Side by side

Same prompt, both answers

Opening lines from 2 of the 10 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
Gemini 2.5 Pro Preview 06-05501 words
(Stands at the mic, looks around nervously) Alright, how's everyone doing? Good, good. You know, I feel like we're living in a world where everything is designed to be "more convenient," but it's really just more work for us. We're being tricked into doing all the jobs.
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
Gemini 2.5 Pro Preview 06-0578 words
Here are 5 jokes: Why did the scarecrow win an award? Because he was outstanding in his field. I have a joke about construction... But I'm still working on it. What do you call a fake noodle? An Impasta. I told my wife she was drawing her eyebrows too high. She looked surprised. Why don't scientists trust atoms?
Read the full answer
Our Verdict
Gemini 2.5 Pro Preview 06-05
Gemini 2.5 Pro Preview 06-05
Claude 3 Opus
Claude 3 OpusRunner-up

Not enough votes to call it. On the specs, Gemini 2.5 Pro Preview 06-05 has the edge: newer, bigger context window.

Gemini 2.5 Pro Preview 06-05 costs 7.5x 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
Gemini 2.5 Pro Preview 06-05
Input
$1.25
12× cheaper
Output
$10.00
7.5× cheaper

Gemini 2.5 Pro Preview 06-05 is cheaper on both: 12× input, 7.5× output.

Where to run it

2 hosts

Claude 3 Opus

No hosts listed on OpenRouter.

Gemini 2.5 Pro Preview 06-052 hosts
HostInOutContextUptime
Google Vertex AI$1.25 in·$10.00 out·1M·98.2% upGoogle AI Studio$1.25 in·$10.00 out·1M·97.4% up

Per million tokens. Prices and uptime via OpenRouter, checked 20 Sep 2026.

Writing DNA

Style Comparison

Similarity
46%

Gemini 2.5 Pro Preview 06-05 uses 482.5x more bold

Claude 3 Opus
Gemini 2.5 Pro Preview 06-05
54%Vocabulary51%
14wSentence Length15w
0.48Hedging0.31
0.0Bold4.8
3.0Lists4.1
0.00Emoji0.00
0.00Headings0.98
0.06Transitions0.05
Based on 3 + 20 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude 3 Opus is developed by Anthropic while Gemini 2.5 Pro Preview 06-05 is developed by Google AI. Claude 3 Opus has a 200K token context window vs Gemini 2.5 Pro Preview 06-05's 1.0M. You can compare their actual outputs across 10 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude 3 Opus and Gemini 2.5 Pro Preview 06-05 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 10 challenges so you can judge which fits your needs best.

Claude 3 Opus costs $15/M input tokens and Gemini 2.5 Pro Preview 06-05 costs $1.25/M input tokens. Gemini 2.5 Pro Preview 06-05 is $13.75/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 Gemini 2.5 Pro Preview 06-05 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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Gemini 2.5 Pro Preview 06-0545 outputs, specs and price
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