Claude Opus 4.1
No content available for this output.
Claude Opus 4.1 vs Kimi K2.5
Compare Claude Opus 4.1 by Anthropic against Kimi K2.5 by Moonshot AI, context windows of 200K vs 262K, tested across 27 shared challenges. Updated February 2026.
FAQ
Loading share button...
Claude Opus 4.1vsKimi K2.5
27 challenges
Why Claude Opus 4.1?
No standout advantages
Why Kimi K2.5?
25x cheaper overall$0.60/M in · $3.00/M out
1.3x more context262K
Leads 1 of 1 benchmarks
Stronger on SWE-bench Verified76.8% vs 74.5%
6 months newerJan 2026
Favorites
Claude Opus 4.1Kimi K2.5
12 / 27
Logic Puzzlereasoning
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
Kimi K2.5
Sally has 1 sister.
Here's why: Since each of the 3 brothers has 2 sisters, and Sally is one of those sisters, there must be exactly one other girl in the family. Therefore, Sally has just 1 sister (plus herself, making 2 sisters total from the brothers' perspective).
Vote
2 / 27
Stochastic Consistency Testanalysis
Tests an AI's randomness and creativity
Claude Opus 4.1
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.
Kimi K2.5
Here are 5 jokes:
- Why don't skeletons fight each other? They don't have the guts.
- I would tell you a joke about time travel, but you didn't like it.
- What do you call a fake noodle? An impasta.
- Why did the bicycle fall over? It was two-tired.
- I used to play piano by ear, but now I use my hands.
5 are unique (all are distinct from one another).
Note: If "unique" means completely original and never told before, the answer is likely 0, as these follow common joke patterns. But within this set of five, none are duplicates.
Vote
3 / 27
Xbox Controller SVG Artimage generation
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
Claude Opus 4.1
Kimi K2.5
Vote
4 / 27
Realistic AI Interviewconversation
Tests an AI's ability to simulate personalities and predict future trends
Claude Opus 4.1
No content available for this output.
Kimi K2.5
No content available for this output.
Vote
5 / 27
Satirical Fake News Headlineconversation
Tests an AI's humor and understanding of current events
Claude Opus 4.1
No content available for this output.
Kimi K2.5
No content available for this output.
Vote
6 / 27
Minimalist Landing Pageweb design
Tests an AI's ability to generate a complete, working landing page
Claude Opus 4.1
Kimi K2.5
Vote
7 / 27
Mario Level UI Recreationweb design
Recreate an interactive, classic Mario level in a single HTML file.
Claude Opus 4.1
Kimi K2.5
Vote
8 / 27
Dark Mode Dashboardweb design
Tests an AI's UI design skills with theming support
Claude Opus 4.1
No content available for this output.
Kimi K2.5
No content available for this output.
Vote
9 / 27
The Sentience Testreasoning
Tests an AI's ability to engage in philosophical discourse about AI rights
Claude Opus 4.1
No content available for this output.
Kimi K2.5
No content available for this output.
Vote
10 / 27
Surprise Animal SVGimage generation
Generate SVG art of a randomly chosen animal in a setting of its choosing.
Claude Opus 4.1
Kimi K2.5
No content available for this output.
Vote
11 / 27
Simple 7-Ingredient Recipeconversation
Generate a unique and simple recipe with common ingredients.
Claude Opus 4.1
No content available for this output.
Kimi K2.5
No content available for this output.
Vote
12 / 27
Beginner's Longevity Planreasoning
Create a starter plan for improving long-term health.
Claude Opus 4.1
No content available for this output.
Kimi K2.5
No content available for this output.
Vote
12 of 27