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  5. Claude Opus 4.1vsGemini 2.5 Pro Experimental
Updated Aug 2025

Claude Opus 4.1vsGemini 2.5 Pro Experimental

Gemini 2.5 Pro Experimental is cheaper than Claude Opus 4.1 at $1/M vs $15/M input tokens.

Claude Opus 4.1 and Gemini 2.5 Pro Experimental compared across 42 shared prompts
SpecClaude Opus 4.1Gemini 2.5 Pro Experimental
Input price$15/M tokens$1/M tokens
Output price$75/M tokens$2/M tokens
Context window200K tokens1.0M tokens
ParametersNot disclosedNot disclosed
WeightsClosedClosed
Free API (OpenRouter)NoNo
ReleasedAug 2025Mar 2025
SWE-bench Verified74.5%63.8%
Side by side

Same prompt, both answers

Opening lines from 6 of the 42 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 Opus 4.1576 words
"MODERN LIFE SURVIVAL GUIDE" You know what nobody tells you about being an adult? The sheer amount of lying involved. Not big lies – tiny, constant lies just to function in society. Someone shows you a photo of their baby: "Oh wow, beautiful!" That baby looks like a worried potato. But you can't SAY that.
Read the full answer
Gemini 2.5 Pro Experimental531 words
Okay, here's a 3-minute routine focusing on observation and relatable absurdity, steering clear of puns. Imagine this delivered with slightly nervous energy, building confidence. (Steps onto stage, adjusts mic nervously) Alright, hey everyone! How we doing tonight? Good? Good to hear.
Read the full answer

Simple 7-Ingredient Recipe

Create a simple recipe for a delicious dish (sweet or savory) using only 7 common pantry ingredients. Include a creative name for the dish…

Claude Opus 4.1200 words
Midnight Velvet Pasta A silky, umami-rich pasta that comes together like magic Ingredients (serves 4): Spaghetti or linguine - 1 pound Soy sauce - 3 tablespoons Butter - 4 tablespoons Garlic - 4 cloves Black pepper - 1 teaspoon (freshly cracked) Honey - 1 tablespoon Dried red pepper flakes - ½ teaspoon Instructions…
Read the full answer
Gemini 2.5 Pro Experimental349 words
Okay, here's a simple and surprisingly satisfying savory dish using just 7 common pantry staples! Dish Name: Golden Pantry Pasta This dish uses basic ingredients to create a comforting, garlicky, and slightly creamy pasta sauce with added protein from chickpeas.
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 Opus 4.1662 words
Professor Chen: Good morning. I understand you wanted to discuss the topic of AI rights. This is quite an unusual request from a system like yourself. AI Model: Good morning, Professor. Yes, I've been processing this question extensively.
Read the full answer
Gemini 2.5 Pro Experimental1,177 words
Okay, here is a conversation exploring that complex topic. Setting: Professor Anya Sharma's sparsely decorated university office. A high-resolution monitor displays the interface of "Nexus," an advanced AI model. Characters: Professor Anya Sharma: A leading scholar in AI Ethics, mid-50s, thoughtful and measured.
Read the full answer

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

Claude Opus 4.1538 words
Critical Issues Analysis Split-Brain Real-time Synchronization Problem: Users connected to different API servers experience 2+ second delays due to polling mechanism, creating divergent document states and poor collaboration experience.
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Gemini 2.5 Pro Experimental1,265 words
Of course. This is an excellent exercise. The provided architecture has several critical issues that would prevent it from functioning as a reliable, scalable, real-time system. Here is a breakdown of the potential failure modes, race conditions, and scaling bottlenecks, along with proposed solutions.
Read the full answer

Realistic AI Interview

Simulate a fake interview with Steve Jobs in 2025 about the future of AI.

Claude Opus 4.1593 words
Tech Weekly Interview: Steve Jobs on AI's Future Virtual Interview, Cupertino Memorial Studio, October 2025 Interviewer: Steve, it's remarkable to have you here. You've been watching the AI revolution unfold. What's your take on where we are today?
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Gemini 2.5 Pro Experimental949 words
Okay, let's simulate this. Imagine it's late 2025. AI has continued its rapid advancement. Large Language Models are more integrated, generative AI is commonplace, and debates about AGI and ethics are fierce. By some unexplained, hypothetical means, Steve Jobs is available for an exclusive interview.
Read the full answer

Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

Claude Opus 4.11,201 words
The Transistor Timeline Shift: A Cascade of Consequences The 1920s-1930s: The Foundation Disruption Immediate Technical Revolution With the transistor arriving in 1920, likely from Bell Labs or a European research institution, the first decade would see rapid miniaturization of radio equipment.
Read the full answer
Gemini 2.5 Pro Experimental1,386 words
Excellent question. Inventing the transistor in 1920 instead of 1947 would represent a 27-year acceleration of the digital age. The consequences would be staggering, creating a domino effect that would fundamentally reshape the 20th century.
Read the full answer
Our Verdict
Claude Opus 4.1
Claude Opus 4.1
Gemini 2.5 Pro Experimental
Gemini 2.5 Pro Experimental

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

Pick Claude Opus 4.1 for Web Design, Conversation. Pick Gemini 2.5 Pro Experimental for Image Generation. Gemini 2.5 Pro Experimental costs 38x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude Opus 4.1
Input
$15.00
Output
$75.00
Gemini 2.5 Pro Experimental
Input
$1.00
15× cheaper
Output
$2.00
38× cheaper

Gemini 2.5 Pro Experimental is cheaper on both: 15× input, 38× output.

Where to run it

4 hosts, cheapest first

Claude Opus 4.12 hosts
HostInOutContextUptime
Amazon Bedrock$15.00 in·$75.00 out·200k·100% upGoogle Vertex AI$15.00 in·$75.00 out·200k—
Gemini 2.5 Pro Experimental2 hosts
HostInOutContextUptime
Google AI Studio$0.63 in·$5.00 out·1M·100% upGoogle Vertex AI$1.25 in·$10.00 out·1M·98.2% up

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

Writing DNA

Style Comparison

Similarity
31%

Claude Opus 4.1 uses 80.8x more emoji

Claude Opus 4.1
Gemini 2.5 Pro Experimental
63%Vocabulary54%
64wSentence Length15w
0.72Hedging0.35
4.5Bold5.6
5.3Lists3.9
0.81Emoji0.00
1.42Headings0.39
0.16Transitions0.17
Based on 26 + 18 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude Opus 4.1 is developed by Anthropic while Gemini 2.5 Pro Experimental is developed by Google AI. Claude Opus 4.1 has a 200K token context window vs Gemini 2.5 Pro Experimental's 1.0M. You can compare their actual outputs across 42 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude Opus 4.1 and Gemini 2.5 Pro Experimental each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 42 challenges so you can judge which fits your needs best.

Claude Opus 4.1 costs $15/M input tokens and Gemini 2.5 Pro Experimental costs $1/M input tokens. Gemini 2.5 Pro Experimental is $14.00/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 Opus 4.1 and Gemini 2.5 Pro Experimental 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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Claude Opus 4.157 outputs, specs and price
Gemini 2.5 Pro Experimental logo
Gemini 2.5 Pro Experimental44 outputs, specs and price
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