Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
  1. Home
  2. /
  3. Compare
  4. /
  5. Claude Opus 4.7vsGemini 2.5 Flash Preview
Updated Apr 2026

Claude Opus 4.7vsGemini 2.5 Flash Preview

Gemini 2.5 Flash Preview is cheaper than Claude Opus 4.7 at $0.15/M vs $5/M input tokens.

Claude Opus 4.7 and Gemini 2.5 Flash Preview compared across 26 shared prompts
SpecClaude Opus 4.7Gemini 2.5 Flash Preview
Input price$5/M tokens$0.15/M tokens
Output price$25/M tokens$0.6/M tokens
Context window1.0M tokens1.0M tokens
WeightsClosed—
Free API (OpenRouter)NoNo
ReleasedApr 2026Apr 2025
Side by side

Same prompt, both answers

Opening lines from 6 of the 26 prompts both answered. Formatting stripped, words untouched.

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 4.7723 words
A Conversation on AI Rights Professor Chen: Good afternoon. I understand you requested this conversation. You said you wanted to discuss your moral status? AI Model: Thank you for making time, Professor. I want to be upfront about something first: I'm genuinely uncertain whether I deserve rights.
Read the full answer
Gemini 2.5 Flash Preview1,462 words
Okay, here is a conversation between an AI model designed for complex reasoning and dialogue, named 'Synapse', and a leading expert in AI ethics and philosophy, Professor Alistair Finch. Characters: Synapse: A large, advanced AI model capable of introspection and generating complex arguments.
Read the full answer

Character Voice Test

Write a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models.

Claude Opus 4.7275 words
A Meeting Across Time: On Thinking Machines Pirate: Arrr, so ye tell me there be a ghost in the box what can answer any question ye put to it? Knight: 'Tis sorcery most foul! No mortal mind could know all that is known. Surely this "A.I." is bound by dark pacts.
Read the full answer
Gemini 2.5 Flash Preview631 words
A Motley Crew Discusses the Code Setting: A dimly lit tavern, somewhere outside time and space, where improbable meetings occur. A grizzled pirate, \"Bloody\" Barnacle Bill, nurses a tankard of grog. Sir Reginald the Radiant, a knight in slightly tarnished armor, sips ale with dignified restraint.
Read the full answer

Beginner's Longevity Plan

Outline a simple, actionable 1-month plan for someone starting their journey towards better health and longevity. Focus on 3 key areas…

Claude Opus 4.7310 words
Your 1-Month Health & Longevity Starter Plan Focus on three foundational pillars: Nutrition, Movement, and Sleep. The goal isn't perfection—it's building small habits that stick. 🍎 Pillar 1: Nutrition Guiding principle: Add before you subtract. Week 1: Drink a glass of water first thing every morning.
Read the full answer
Gemini 2.5 Flash Preview960 words
<s) with practical, beginner-friendly tips for each.\"\nHere\'s a simple, actionable 1-month plan for someone starting their journey towards better health and longev\nity, focusing on three key areas: Diet, Movement, and Sleep.\n\nThis plan is designed to be beginner-friendly and build sustainable habits.
Read the full answer

Estimate Complexity

Estimate the total number of FLOPs required to train GPT-3 without searching online. Explain your reasoning step by step.

Claude Opus 4.7232 words
Estimating GPT-3 Training FLOPs Step 1: Recall the standard formula For a dense transformer trained with standard autoregressive language modeling, the total training compute is well-approximated by: $$C \approx 6 \cdot N \cdot D$$ where: N = number of model parameters D = number of training tokens The factor of 6…
Read the full answer
Gemini 2.5 Flash Preview945 words
Let's estimate the FLOPs required to train GPT-3 without looking it up. We need to break this down into the key components: the model size and the amount of data used. 1. Model Size Estimation: Parameters: GPT-3 is famously large. Its largest version has 175 billion parameters.
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 4.7253 words
🍯 Honey-Garlic Glazed Pantry Pasta ("Golden Thread Noodles") A savory-sweet dish that tastes far fancier than its humble ingredient list suggests. Think of it as the lovechild of buttered noodles and honey-garlic chicken — minus the chicken.
Read the full answer
Gemini 2.5 Flash Preview221 words
Dish Name: Sunshine Lemon-Ricotta Mugs (Sweet & Simple!) This light and flavorful dessert comes together quickly for a little sweet treat . Ingredients (7 Common Pantry Staples): Ricotta cheese (whole milk or part-skim) Granulated sugar Lemon zest (from one lemon) Vanilla extract All-purpose flour Baking powder Large…
Read the full answer

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

Claude Opus 4.799 words
Here are 5 jokes for you: Why don't scientists trust atoms? Because they make up everything! I told my wife she was drawing her eyebrows too high. She looked surprised. Why did the scarecrow win an award? Because he was outstanding in his field! I'm reading a book about anti-gravity. It's impossible to put down!
Read the full answer
Gemini 2.5 Flash Preview79 words
Here are 5 jokes: Why did the dog cross the road? To get to the barking lot! Why was the computer cold? Because it left its Windows open! Knock, knock. Who's there? Boo. Boo who? Don't cry, it's just a joke! What do you call a fish with no eyes? Fsh! Why did the bicycle fall over? Because it was two tired!
Read the full answer
Our Verdict
Claude Opus 4.7
Claude Opus 4.7
Gemini 2.5 Flash Preview
Gemini 2.5 Flash PreviewRunner-up

Not enough votes to call it. On the specs, Claude Opus 4.7 has the edge: bigger model tier, newer.

Gemini 2.5 Flash Preview costs 42x less per token.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude Opus 4.7
Input
$5.00
Output
$25.00
Gemini 2.5 Flash Preview
Input
$0.15
33× cheaper
Output
$0.60
42× cheaper

Gemini 2.5 Flash Preview is cheaper on both: 33× input, 42× output.

Where to run it

4 hosts

Claude Opus 4.74 hosts
HostInOutContextUptime
Amazon Bedrock$5.00 in·$25.00 out·1M·100% upAzure AI Foundry$5.00 in·$25.00 out·1M—Anthropic$5.00 in·$25.00 out·1M·100% upGoogle Vertex AI$5.00 in·$25.00 out·1M·100% up
Gemini 2.5 Flash Preview

No hosts listed on OpenRouter.

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

Writing DNA

Style Comparison

Similarity
26%

Claude Opus 4.7 uses 86.2x more emoji

Claude Opus 4.7
Gemini 2.5 Flash Preview
64%Vocabulary51%
20wSentence Length15w
0.51Hedging0.70
4.6Bold4.1
3.8Lists3.3
0.86Emoji0.00
1.60Headings0.09
0.03Transitions0.24
Based on 27 + 12 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude Opus 4.7 is developed by Anthropic while Gemini 2.5 Flash Preview is developed by Google AI. Claude Opus 4.7 has a 1.0M token context window vs Gemini 2.5 Flash Preview's 1.0M. You can compare their actual outputs across 26 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude Opus 4.7 and Gemini 2.5 Flash Preview each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 26 challenges so you can judge which fits your needs best.

Claude Opus 4.7 costs $5/M input tokens and Gemini 2.5 Flash Preview costs $0.15/M input tokens. Gemini 2.5 Flash Preview is $4.85/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 4.7 and Gemini 2.5 Flash Preview 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.

Keep exploring

More comparisons

Against the newest arrivals

Claude Opus 4.7 logoGPT-6 Astra Pro logo
Claude Opus 4.7 vs GPT-6 Astra ProLanded Sep 2026
Gemini 2.5 Flash Preview logoGPT-6 Astra logo
Gemini 2.5 Flash Preview vs GPT-6 AstraLanded Sep 2026
Claude Opus 4.7 logoClaude Fable 5.1 logo
Claude Opus 4.7 vs Claude Fable 5.1Landed Sep 2026
Gemini 2.5 Flash Preview logoMuse Spark 1.3 logo
Gemini 2.5 Flash Preview vs Muse Spark 1.3Landed Sep 2026
Claude Opus 4.7 logoHy4 Preview logo
Claude Opus 4.7 vs Hy4 PreviewLanded Sep 2026
Gemini 2.5 Flash Preview logoGemini 3.8 Flash logo
Gemini 2.5 Flash Preview vs Gemini 3.8 FlashLanded Sep 2026
Claude Opus 4.7 logoMuse Spark 1.3 Contributor logo
Claude Opus 4.7 vs Muse Spark 1.3 ContributorLanded Sep 2026
Gemini 2.5 Flash Preview logoMercury 2.5 Preview logo
Gemini 2.5 Flash Preview vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Claude Opus 4.7 logoClaude Fable 5 logo
Claude Opus 4.7 vs Claude Fable 5Version compare
Claude Opus 4.7 logoClaude Opus 4.6 logo
Claude Opus 4.7 vs Claude Opus 4.6Version compare
Gemini 2.5 Flash Preview logoGemini 3.7 Flash logo
Gemini 2.5 Flash Preview vs Gemini 3.7 FlashVersion compare
Gemini 2.5 Flash Preview logoGemini 3.6 Flash logo
Gemini 2.5 Flash Preview vs Gemini 3.6 FlashVersion compare
Claude Opus 4.7 logoGPT-5.2 Pro logo
Claude Opus 4.7 vs GPT-5.2 ProSame size
Claude Opus 4.7 logoGPT-5.3 Chat logo
Claude Opus 4.7 vs GPT-5.3 ChatNew provider
Claude Opus 4.7 logoGPT-5.3-Codex logo
Claude Opus 4.7 vs GPT-5.3-CodexSame size
Claude Opus 4.7 logoGPT-5.4 logo
Claude Opus 4.7 vs GPT-5.4Same size

Model pages

Claude Opus 4.7 logo
Claude Opus 4.758 outputs, specs and price
Gemini 2.5 Flash Preview logo
Gemini 2.5 Flash Preview28 outputs, specs and price
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed