GPT-4.1 Nano
Sally has 2 sisters.
Here's the reasoning:
- Sally has 3 brothers.
- Each brother has 2 sisters.
- Since Sally is one of those sisters, the other sister is the other girl brothers share.
Therefore, Sally has 2 sisters in total.
Compare GPT-4.1 Nano by OpenAI against Claude Opus 4 by Anthropic, context windows of 1.0M vs 200K, tested across 27 shared challenges. Updated March 2026.
GPT-4.1 Nano and Claude Opus 4 are both competitive models. GPT-4.1 Nano costs $0.1/M input tokens vs $15/M for Claude Opus 4. Context windows: 1048K vs 200K tokens. Compare their real outputs side by side below.
GPT-4.1 Nano is made by openai while Claude Opus 4 is from anthropic. GPT-4.1 Nano has a 1048K token context window compared to Claude Opus 4's 200K. On pricing, GPT-4.1 Nano costs $0.1/M input tokens vs $15/M for Claude Opus 4.
No community votes yet. On paper, Claude Opus 4 has the edge — bigger model tier, newer.
GPT-4.1 Nano is 188x cheaper per token — worth considering if cost matters.
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Tests an AI's ability to solve a simple but potentially confusing logic puzzle
Sally has 2 sisters.
Here's the reasoning:
Therefore, Sally has 2 sisters in total.
I need to work through this step-by-step.
Given information:
Since Sally is one of the sisters that each brother has, and each brother has 2 sisters total, that means th ere must be exactly 2 sisters in the family.
The 2 sisters are:
Therefore, Sally has 1 sister.
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