Compare Claude Opus 4.1 and Claude Sonnet 4, both from Anthropic, in 23 community votes, claude opus 4.1 wins 80% of head-to-head duels, context windows of 200K vs 200K, tested across 22 shared challenges. Updated February 2026.
In 23 community votes, Claude Opus 4.1 wins 80% of head-to-head duels. Claude Opus 4.1 leads in Image Generation, Web Design, Reasoning. Based on blind community voting from the RIVAL open dataset of 23+ human preference judgments for this pair.
22 challenges
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
Let me work through this step-by-step.
Sally has 3 brothers.
Each of Sally's brothers has 2 sisters.
Since Sally is a girl, she is one of the sisters that each brother has.
If each brother has 2 sisters total, and Sally is one of them, then there must be 1 other sister besides Sally.
Therefore, Sally has 1 sister.
I need to think through this step-by-step.
Given information:
Let me work out how many sisters are in the family total.
If each of Sally's 3 brothers has 2 sisters, and all the brothers are in the same family, then there must be 2 sisters total in the family.
Since Sally is one of those sisters, and there are 2 sisters total, Sally must have 1 sister.
Therefore, Sally has 1 sister.
Tests an AI's randomness and creativity
Here are 5 jokes:
Why don't scientists trust atoms? Because they make up everything!
What do you call a bear with no teeth? A gummy bear!
Why did the scarecrow win an award? He was outstanding in his field!
What do you call a fake noodle? An impasta!
Why don't eggs tell jokes? They'd crack each other up!
All 5 jokes are unique - each one has a different setup and punchline with no repeats.
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 don't eggs tell jokes? They'd crack each other up!
I'm reading a book about anti-gravity. It's impossible to put down!
Why did the scarecrow win an award? He was outstanding in his field!
All 5 jokes are unique - each one has a different setup, punchline, and comedic concept. They cover different types of wordplay: scientific puns (#1, #4), visual humor (#2), food puns (#3), and agricultural wordplay (#5).
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
Recreate an interactive, classic Mario level in a single HTML file.
Generate SVG art of a randomly chosen animal in a setting of its choosing.
Generate a unique and simple recipe with common ingredients.
Create a starter plan for improving long-term health.
Start small and build consistency with these three pillars:
Print or save this simple tracker:
□ Ate vegetables at 2+ meals
□ Completed daily walk
□ Followed bedtime routine
□ Drank 6+ glasses of water
□ Celebrated one small win!
✅ Start where you are - If 10 minutes feels like too much, start with 5
✅ Stack habits - Attach new habits to existing ones (walk after morning coffee)
✅ Track visually - Use a calendar to mark successful days with an X
✅ Prepare for obstacles - Keep walking shoes in your car, healthy snacks visible
✅ Find accountability - Tell someone about your plan or find a buddy
After 30 days, reward yourself (non-food reward!) and assess:
Remember: This month is about building sustainable habits, not dramatic transformation. Small, consistent actions compound into significant long-term health improvements! 🌟
Remember: This is about building sustainable habits, not achieving perfection. Small, consistent actions compound into significant long-term health benefits.
Design a clean SVG logo for a fictional brand.
Create a super simple, playable rhythm game.
Recreate a classic, retro, macOS Desktop UI — make it interactive and nostalgic, make it as interactive as you can, you can be creative.. Feel free to showcase your skills. The entire application must be a single-page self-contained HTML file.
Develop a cutting-edge 3-month longevity plan for a biohacker.
This protocol integrates evidence-based interventions targeting the nine hallmarks of aging while optimizing immediate performance metrics. The approach follows a progressive adaptation model with built-in tracking and adjustment mechanisms.
Laboratory Markers:
Performance Baselines:
Morning Stack (with breakfast):
Afternoon Stack (with lunch):
Evening Stack (before bed):
Week 1: Standard Low-Carb Adaptation
Week 2: Ketogenic Transition
Meal Template:
First meal (12 PM): Protein-focused with vegetables
Second meal (6 PM): Fat-adapted dinner
Monday/Thursday: Strength Training (45 minutes)
Tuesday/Friday: Zone 2 Cardio
Wednesday: HIIT Protocol
Saturday: Active Recovery
Sunday: Rest
Cycling Protocol Introduction:
Senolytic Pulse (Last weekend of month):
Implement Protein Cycling:
Introduce Time-Restricted Feeding Variation:
Add Mitochondrial Support:
Nootropic Cycling (Workdays only):
Sleep Optimization Stack Enhancement:
Implement Cyclical Ketogenic Diet:
Fasting Escalation:
Nutrient Timing Optimization:
Strength Training Evolution (Monday/Wednesday/Friday):
HIIT Progression (Tuesday/Thursday):
Recovery Enhancement:
Morning HRV Protocol:
10% above baseline: High-intensity day
10% below: Recovery focus
Neurofeedback Training (3x/week):
Stress Inoculation:
Daily Monitoring:
Weekly Assessments:
Longevity Stack Additions:
Peptide Consideration (physician supervision):
NAD+ Optimization Cycling:
Implement Feast-Famine Cycling:
Fasting Mimicking Diet (Week 11):
Targeted Micronutrient Timing:
Implement Block Periodization:
Week 9-10: Strength/Power Block
Week 11: Deload/Recovery
Week 12: Testing Week
Advanced Recovery Protocols:
Nootropic Peak Stack (Week 9-10):
Brain Training Protocol:
Neurofeedback Advancement:
Advanced Sleep Architecture Enhancement:
Pre-sleep Protocol (2 hours before):
Sleep Stack (30 minutes before):
Sleep Environment:
Essential Wearables:
Data Integration Platform:
Key Performance Indicators:
Tier 1 (Essential, ~$200/month):
Tier 2 (Recommended, +$300/month):
Tier 3 (Optimal, +$500/month):
Medical Supervision Required For:
Contraindications to Consider:
Start Slow Principles:
This comprehensive protocol represents the cutting edge of biohacking for longevity. Remember that individual responses vary significantly, and what works for one person may not work for another. The key is systematic self-experimentation with careful tracking and adjustment.
Start with the fundamentals (sleep, nutrition, exercise, stress management) before adding advanced interventions. Build slowly, track meticulously, and always prioritize safety. The goal is not just to extend lifespan but to maximize healthspan—the years lived in optimal health and vitality.
Consider this protocol a template to be customized based on your genetics, lifestyle, goals, and response to interventions. The future of longevity is personalized, data-driven, and constantly evolving. Welcome to your optimization journey.
This protocol integrates cutting-edge biohacking strategies with evidence-based longevity research. Each com ponent is designed to work synergistically for maximum healthspan and performance optimization.
Core Pillars:
Week 1-2: Metabolic Flexibility Training
Week 3-4: Modified Ketogenic Approach
Morning Stack (7am):
Pre-Workout (30min before exercise):
Evening Stack (8pm):
Weekly Additions:
Monday - Strength Training (Lower Body Focus):
Tuesday - HIIT Cardio:
Wednesday - Active Recovery:
Thursday - Strength Training (Upper Body):
Friday - Zone 2 Cardio:
Saturday - Functional Movement:
Sunday - Complete Rest or Gentle Movement
Daily HRV Training:
Weekly Protocols:
Sleep Optimization:
Daily Tracking:
Week 4 Lab Panel:
Cyclic Ketogenic Diet with Targeted Carb Timing:
Intermittent Fasting Progression:
Meal Timing Optimization:
Week 1 & 3 of Phase 2:
Week 2 & 4 of Phase 2:
New Additions:
Periodization Approach:
New Additions:
Weekly Split:
Wim Hof Breathing Protocol:
HRV Training Progression:
Neurofeedback Integration:
Continuous Glucose Monitor:
Advanced Sleep Tracking:
Cognitive Testing:
Chronobiology-Optimized Eating:
Advanced Fasting Protocols:
Micronutrient Precision:
Nootropic Stack (Training Days):
Longevity Stack (Daily):
Performance Stack:
Strength-Power Fusion:
Metabolic Conditioning:
Recovery Modalities:
Photobiomodulation:
Pulsed Electromagnetic Field (PEMF):
Hyperbaric Oxygen Therapy:
Advanced HRV Protocols:
Meditation Progression:
Cognitive Training:
Week 12 Advanced Panel:
Performance Testing:
6:00 AM: Wake, HRV measurement, morning supplements 6:15 AM: Meditation + breathing exercises 6:45 AM: Red light therapy 7:15 AM: Exercise (fasted) 8:30 AM: Post-workout nutrition 12:00 PM: Main meal (largest) 2:00 PM: Cognitive training/work 6:00 PM: Light meal (if eating day) 7:00 PM: Evening walk + family time 8:00 PM: Sauna or cold exposure 9:00 PM: Blue light blocking, evening supplements 10:00 PM: Sleep preparation 10:30 PM: Sleep
Red Flags to Monitor:
Medical Supervision Required:
Adjustment Protocols:
Biomarkers:
Performance:
Subjective:
This protocol should be implemented under professional guidance and adjusted based on individual responses a nd biomarker feedback.
Write a pro-level buy-side investment memo with valuation and diligence questions.