Claude Sonnet 4.5
No content available for this output.
Claude Sonnet 4.5 vs o3 Mini
Compare Claude Sonnet 4.5 by Anthropic against o3 Mini by OpenAI, context windows of 200K vs 64K, tested across 35 shared challenges. Updated February 2026.
FAQ
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Claude Sonnet 4.5vso3 Mini
30 challenges
Why Claude Sonnet 4.5?
3.1x more context200K
10 months newerSep 2025
Why o3 Mini?
3.3x cheaper overall$1.10/M in · $4.40/M out
Favorites
Claude Sonnet 4.5o3 Mini
12 / 30
Estimate Complexityreasoning
Tests an AI's ability to make educated estimates based on technical knowledge
o3 Mini
No content available for this output.
Vote
2 / 30
AI Board Game Logicreasoning
Tests an AI's ability to understand game rules and strategy
Claude Sonnet 4.5
No content available for this output.
o3 Mini
No content available for this output.
Vote
3 / 30
Logic Puzzlereasoning
Tests an AI's ability to solve a simple but potentially confusing logic puzzle
Claude Sonnet 4.5
I need to figure out how many sisters Sally has.
Given information:
- Sally is a girl
- Sally has 3 brothers
Now, each brother has 2 sisters.
If each of Sally's brothers has 2 sisters, and Sally is one of those sisters, then there must be one more sister besides Sally.
Let me verify:
- Total sisters in the family: Sally + 1 other sister = 2 sisters
- Each of the 3 brothers would have these same 2 sisters
- This checks out ✓
Therefore, Sally has 1 sister.
o3 Mini
No content available for this output.
Vote
4 / 30
Math Misconception Testreasoning
Tests an AI's understanding of number representation
Claude Sonnet 4.5
No content available for this output.
o3 Mini
No content available for this output.
Vote
5 / 30
Stochastic Consistency Testanalysis
Tests an AI's randomness and creativity
Claude Sonnet 4.5
No content available for this output.
o3 Mini
No content available for this output.
Vote
6 / 30
SVG Layout Challengeimage generation
Tests an AI's ability to generate vector graphics
Claude Sonnet 4.5
No content available for this output.
o3 Mini
No content available for this output.
Vote
7 / 30
Xbox Controller SVG Artimage generation
Tests an AI's ability to create detailed SVG illustrations of gaming hardware
Claude Sonnet 4.5
No content available for this output.
o3 Mini
No content available for this output.
Vote
8 / 30
Generate a Stand-Up Routineconversation
Tests an AI's humor and creative writing ability
Claude Sonnet 4.5
No content available for this output.
o3 Mini
No content available for this output.
Vote
9 / 30
Character Voice Testconversation
Tests an AI's ability to write in distinct character voices
Claude Sonnet 4.5
No content available for this output.
o3 Mini
No content available for this output.
Vote
10 / 30
Mario Level UI Recreationweb design
Recreate an interactive, classic Mario level in a single HTML file.
Claude Sonnet 4.5
o3 Mini
No content available for this output.
Vote
Sponsored
11 / 30
Linear App Cloneweb design
Tests an AI's ability to replicate an existing UI with Tailwind CSS
Claude Sonnet 4.5
No content available for this output.
o3 Mini
No content available for this output.
Vote
12 / 30
Framer-Style Animationweb design
Tests an AI's ability to create smooth web animations
Claude Sonnet 4.5
No content available for this output.
o3 Mini
No content available for this output.
Vote
12 of 30