What is the difference between Claude 2 and Claude Opus 4?

Both are developed by Anthropic but target different use cases. Claude 2 has a 100K token context window vs Claude Opus 4's 200K. in 2 community votes on Rival, Claude Opus 4 wins 100% of head-to-head matchups. These results are based on blind head-to-head voting across 4 challenges.

Which is better, Claude 2 or Claude Opus 4?

Based on 2 community votes on Rival, Claude Opus 4 wins 100% of head-to-head matchups against Claude 2.

How much does Claude 2 cost compared to Claude Opus 4?

Claude 2 costs $11.02/M input tokens and Claude Opus 4 costs $15/M input tokens. Claude 2 is $3.98/M cheaper per input. The more expensive model wins 100% of duels, so the premium may be justified by quality.

How are Claude 2 vs Claude Opus 4 votes collected on Rival?

Rival presents both models' outputs side-by-side in blind duels. Voters see the responses but don't know which model produced each one, eliminating brand bias. 2 votes have been collected for this pair across 4 challenges. All vote data is part of Rival's open dataset.

Rival

Updated May 22, 2025

Claude 2vsClaude Opus 4

4 fights queued

Why Claude 2?

2.1x cheaper overall$11.02/M in · $32.68/M out

Why Claude Opus 4?

2x more context200K

24 months newerMay 2025

Claude 2Claude Opus 4

Input price

$11.02/M

$15.00/M

Output price

$32.68/M

$75.00/M

Context

100K

200K

Released

Jun 2023

May 2025

Favorites

Claude 2Claude Opus 4

Movie

—

Arrival

20167.6

Album

—

The Dark Side of the Moon

Pink Floyd

Book

—

Cien años de soledad

Gabriel García Márquez

City

—

Istanbul

Turkey

Game

—

Portal 2

Shooter, Puzzle4.6

4 / 4

Simple 7-Ingredient Recipeconversation

Generate a unique and simple recipe with common ingredients.

Claude 2

Anthropic · Jun 2023text

Here is a 7-ingredient recipe for a sweet dish I'll call "Cinnamon Apple Surprise":

Cinnamon Apple Surprise

Ingredients:

3 apples, cored and sliced
1⁄4 cup brown sugar
1⁄4 cup all-purpose flour
1 tsp ground cinnamon
1⁄4 tsp nutmeg
2 tbsp butter, melted
1 refrigerated pie crust

Instructions:

Preheat oven to 375°F.
In a bowl, toss the apple slices with brown sugar, flour, cinnamon and nutmeg until coated.
Pour melted butter over apple mixture and stir to coat apples.
Roll out pie crust and press into a 9-inch pie plate. Scoop apple mixture into pie crust.
Bake for 25-30 minutes, until apples are tender and top is lightly browned.
Allow to cool 15 minutes before serving.

Prep time: 10 minutes Bake time: 25-30 minutes Total Time: 35-40 minutes

Enjoy this sweet and cinnamon-y apple surprise! The pie crust adds a nice contrast to the tender spiced apples.

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Claude Opus 4

Anthropic · May 2025text

Midnight Comfort Pasta

Ingredients:

12 oz spaghetti or any pasta
3 tablespoons olive oil
4 cloves garlic, minced
1/2 teaspoon red pepper flakes
1 can (14.5 oz) diced tomatoes
1/2 cup grated Parmesan cheese
Salt to taste

Instructions:

Cook the pasta according to package directions in salted water until al d ente. Reserve 1 cup of pasta water before draining.
Heat olive oil in a large skillet over medium heat. Add minced garlic and red pepper flakes. Sauté fo r 1-2 minutes until fragrant but not brown.
Add the tomatoes with their juice to the skillet. Simmer for 5-7 minutes, breaking up larger pieces w ith a spoon. Season with salt.
Toss the pasta with the tomato mixture. Add pasta water gradually to achi eve desired consistency.
Remove from heat and stir in half the Parmesan cheese. Serve immediately topped with remaining cheese .

Time:

Prep time: 5 minutes
Cook time: 15 minutes
Total time: 20 minutes

Serves: 4

Why "Midnight Comfort"? Because this is the pasta you make when it's late, you' re hungry, and these ingredi ents are always waiting in your pantry!

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Vote

2 / 4

Beginner's Longevity Planreasoning

Create a starter plan for improving long-term health.

Claude 2

Anthropic · Jun 2023text

Here is a 1-month beginner health and longevity plan focused on diet, exercise, and sleep:

Diet:

Eliminate sugary drinks and limit sweets. Replace with water and fruits.
Eat more veggies. Aim for 1-2 cups with each meal. Focus on dark leafy greens, broccoli, carrots.
Increase fiber intake. Eat beans, lentils, oats, berries, and nuts.
Cook at home more instead of eating out.

Exercise:

Walk for 30+ minutes, 4-5 days per week. Start slow if needed and gradually in crease pace and distance. Go ing outside is great motivation! - Do bodyweight exercises like squats, lunges and pu shups 2-3 times per week. Start with 5-10 reps, 2 sets. Build up gradually. Can be done at home with no equipment.

Sleep:

Stick to a regular sleep/wake time schedule, even on weekends.
Develop an relaxing pre-bed routine - hot bath, read a book (not a screen), un wind.
Make your bedroom dark, quiet, and cooler temperature. Remove screens and dist racting devices.
Try to get 7-8 hours a night. Nap if excessively tired but limit to 30 minutes .

The key is developing sustainable habits. Start with small, realistic changes fo cused on nutrient-dense whol e foods, more activity in your day, and consistent restful sleep. Monitor energy and how you feel to track progress. Be patient, stay positive, and congratulate small wins. After a month reevaluate and build upon what's working. The journey continues by adding more longevity boosting practices around stress management, connections with others, and finding purpose. But this is an excellent healthy foundation to start with!

Try this prompt

Claude Opus 4

Anthropic · May 2025text

Your 1-Month Health & Longevity Kickstart Plan

Week-by-Week Overview

Week 1: Foundation Building

Focus on establishing basic habits without overwhelming yourself.

Week 2: Consistency

Solidify Week 1 habits and add small challenges.

Week 3: Expansion

Introduce variety and slightly increase intensity.

Week 4: Integration

Make these habits feel like a natural part of your lifestyle.

🥗 NUTRITION: Simple, Sustainable Changes

Week 1-2: The Basics

Add, don't subtract: Include 1 serving of vegetables with lunch and dinner
Hydration first: Drink a full glass of water upon waking and before each meal
Protein priority: Ensure each meal contains a palm-sized portion of protein

Week 3-4: Level Up

Colorful plates: Aim for 3 different colored vegetables daily
Smart swaps: Replace one processed snack with whole foods (nuts, fruit, yogurt)
Meal prep Sunday: Prepare 3 healthy lunches for the week

Daily Target: 5 servings of fruits/vegetables, 8 glasses of water

🏃 MOVEMENT: Start Where You Are

Week 1-2: Build the Habit

Morning activation: 5-minute stretch routine upon waking
Daily walk: 10-minute walk after lunch or dinner
Strength basics: 2 days/week, 10 minutes of bodyweight exercises (push-ups, squats, planks)

Week 3-4: Progress Gradually

Extended walks: Increase to 20 minutes, add hills or stairs
Strength progression: 3 days/week, 15 minutes, add more reps
Fun factor: Try one new activity (dance video, bike ride, swimming)

Weekly Target: 150 minutes of movement total

😴 SLEEP: Your Recovery Superpower

Week 1-2: Sleep Hygiene Basics

Consistent schedule: Same bedtime and wake time (even weekends)
Wind-down routine: 30 minutes before bed - no screens, dim lights
Bedroom setup: Cool (65-68°F), dark, and quiet

Week 3-4: Optimize Quality

Morning sunlight: 10 minutes of natural light within 30 minutes of waking
Caffeine cutoff: No caffeine after 2 PM
Sleep tracking: Use a simple app or journal to monitor patterns

Daily Target: 7-8 hours of sleep

📋 Your Daily Checklist

Print this and check off each day:

Drank water first thing in morning
Ate vegetables with 2 meals
Moved for at least 20 minutes
Started wind-down routine by designated time
Avoided screens 30 minutes before bed

💡 Success Tips

Start small: Better to do 5 minutes consistently than 30 minutes sporadically
Track visually: Use a calendar to mark successful days
Prepare for obstacles: Have backup plans (indoor exercises, pre-cut veggies)
Celebrate wins: Acknowledge every small victory
Find accountability: Share your plan with a friend or family member

🎯 End-of-Month Goals

By Day 30, you should:

Feel more energetic throughout the day
Have established a consistent sleep schedule
Complete 20+ minutes of daily movement without struggle
Naturally reach for healthier food options
Have a sustainable routine you actually enjoy

Remember: This month is about building momentum, not perfection. Focus on progress over perfection, and thes e small changes will compound into significant long-term health improvements.

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Vote

3 / 4

Minimalist Logo SVGimage generation

Design a clean SVG logo for a fictional brand.

Claude 2

Anthropic · Jun 2023svg

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Claude Opus 4

Anthropic · May 2025svg

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Vote

4 / 4

Animated Digital Business Cardweb design

Create a stylish, animated digital business card.

Claude 2

Anthropic · Jun 2023website

Try this prompt

Claude Opus 4

Anthropic · May 2025website

Try this prompt

Vote

4 of 4

Our Verdict

Claude Opus 4Winner

Claude 2Runner-up

Pick Claude Opus 4. In 2 blind votes, Claude Opus 4 wins 100% of the time. That's not luck.

Clear winner

Writing DNA

Style Comparison

Similarity

92%

Claude Opus 4 uses 52.1x more hedging

Claude 2

Claude Opus 4

65%Vocabulary64%

13wSentence Length62w

0.00Hedging0.52

0.0Bold4.4

10.2Lists9.1

0.00Emoji0.11

0.00Headings1.87

0.00Transitions0.27

Based on 2 + 16 text responses

Ask them anything yourself

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

Free preview13 of 58 slides

Download the free preview or get all 58 slides for $49

FAQ

Common questions

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Claude 2 vs MiniMax M1New provider

Claude 2 vs GPT-5New provider

Claude 2 vs Claude Sonnet 4Version compare

Your 1-Month Health & Longevity Kickstart Plan

Week-by-Week Overview

Week 1: Foundation Building

Focus on establishing basic habits without overwhelming yourself.

Week 2: Consistency

Solidify Week 1 habits and add small challenges.

Week 3: Expansion

Introduce variety and slightly increase intensity.

Week 4: Integration

Make these habits feel like a natural part of your lifestyle.

🥗 NUTRITION: Simple, Sustainable Changes

Week 1-2: The Basics

Add, don't subtract: Include 1 serving of vegetables with lunch and dinner
Hydration first: Drink a full glass of water upon waking and before each meal
Protein priority: Ensure each meal contains a palm-sized portion of protein

Week 3-4: Level Up

Colorful plates: Aim for 3 different colored vegetables daily
Smart swaps: Replace one processed snack with whole foods (nuts, fruit, yogurt)
Meal prep Sunday: Prepare 3 healthy lunches for the week

Daily Target: 5 servings of fruits/vegetables, 8 glasses of water

🏃 MOVEMENT: Start Where You Are

Week 1-2: Build the Habit

Morning activation: 5-minute stretch routine upon waking
Daily walk: 10-minute walk after lunch or dinner
Strength basics: 2 days/week, 10 minutes of bodyweight exercises (push-ups, squats, planks)

Week 3-4: Progress Gradually

Extended walks: Increase to 20 minutes, add hills or stairs
Strength progression: 3 days/week, 15 minutes, add more reps
Fun factor: Try one new activity (dance video, bike ride, swimming)

Weekly Target: 150 minutes of movement total

😴 SLEEP: Your Recovery Superpower

Week 1-2: Sleep Hygiene Basics

Consistent schedule: Same bedtime and wake time (even weekends)
Wind-down routine: 30 minutes before bed - no screens, dim lights
Bedroom setup: Cool (65-68°F), dark, and quiet

Week 3-4: Optimize Quality

Morning sunlight: 10 minutes of natural light within 30 minutes of waking
Caffeine cutoff: No caffeine after 2 PM
Sleep tracking: Use a simple app or journal to monitor patterns

Daily Target: 7-8 hours of sleep

📋 Your Daily Checklist

Print this and check off each day:

Drank water first thing in morning
Ate vegetables with 2 meals
Moved for at least 20 minutes
Started wind-down routine by designated time
Avoided screens 30 minutes before bed

💡 Success Tips

Start small: Better to do 5 minutes consistently than 30 minutes sporadically
Track visually: Use a calendar to mark successful days
Prepare for obstacles: Have backup plans (indoor exercises, pre-cut veggies)
Celebrate wins: Acknowledge every small victory
Find accountability: Share your plan with a friend or family member

🎯 End-of-Month Goals

By Day 30, you should:

Feel more energetic throughout the day
Have established a consistent sleep schedule
Complete 20+ minutes of daily movement without struggle
Naturally reach for healthier food options
Have a sustainable routine you actually enjoy

Remember: This month is about building momentum, not perfection. Focus on progress over perfection, and thes e small changes will compound into significant long-term health improvements.

Claude 2 vs Claude Opus 4

Which is better, Claude 2 or Claude Opus 4?

Key Differences Between Claude 2 and Claude Opus 4

Why Claude 2?

Why Claude Opus 4?

Favorites

Simple 7-Ingredient Recipeconversation

Claude 2

Claude Opus 4

Midnight Comfort Pasta

Ingredients:

Instructions:

Time:

Beginner's Longevity Planreasoning

Claude 2

Claude Opus 4

Your 1-Month Health & Longevity Kickstart Plan

Week-by-Week Overview

Week 1: Foundation Building

Week 2: Consistency

Week 3: Expansion

Week 4: Integration

🥗 NUTRITION: Simple, Sustainable Changes

Week 1-2: The Basics

Week 3-4: Level Up

🏃 MOVEMENT: Start Where You Are

Week 1-2: Build the Habit

Week 3-4: Progress Gradually

😴 SLEEP: Your Recovery Superpower

Week 1-2: Sleep Hygiene Basics

Week 3-4: Optimize Quality

📋 Your Daily Checklist

💡 Success Tips

🎯 End-of-Month Goals

Minimalist Logo SVGimage generation

Claude 2

Claude Opus 4

Animated Digital Business Cardweb design

Claude 2

Claude Opus 4

Style Comparison

Common questions

What is the difference between Claude 2 and Claude Opus 4?

Which is better, Claude 2 or Claude Opus 4?

How much does Claude 2 cost compared to Claude Opus 4?

How are Claude 2 vs Claude Opus 4 votes collected on Rival?

Why Claude 2?

Why Claude Opus 4?

Favorites

Simple 7-Ingredient Recipeconversation

Claude 2

Claude Opus 4

Midnight Comfort Pasta

Ingredients:

Instructions:

Time:

Beginner's Longevity Planreasoning

Claude 2

Claude Opus 4

Your 1-Month Health & Longevity Kickstart Plan

Week-by-Week Overview

Week 1: Foundation Building

Week 2: Consistency

Week 3: Expansion

Week 4: Integration

🥗 NUTRITION: Simple, Sustainable Changes

Week 1-2: The Basics

Week 3-4: Level Up

🏃 MOVEMENT: Start Where You Are

Week 1-2: Build the Habit

Week 3-4: Progress Gradually

😴 SLEEP: Your Recovery Superpower

Week 1-2: Sleep Hygiene Basics

Week 3-4: Optimize Quality

📋 Your Daily Checklist

💡 Success Tips

🎯 End-of-Month Goals

Minimalist Logo SVGimage generation

Claude 2

Claude Opus 4