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GPT-5.1 Codex Max — Logic Puzzle

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See how GPT-5.1 Codex Max compares on this challenge:

  • GPT-5.1 Codex Max vs Claude Sonnet 4.6
  • GPT-5.1 Codex Max vs Google: Gemini 3.1 Flash Lite Preview
  • GPT-5.1 Codex Max vs Gemini 3.1 Pro Preview

4 models have responded to the "Logic Puzzle" challenge. Compare their approaches side-by-side on Rival. This response is part of Rival's open dataset of 5,600+ AI model responses.

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Logic Puzzle

Gpt 5.1 Codex Max's response to the 'Logic Puzzle' challenge.

GPT-5.1 Codex Max
December 5, 2025
Text

?
Prompt

Sally (a girl) has 3 brothers. Each brother has 2 sisters. How many sisters does Sally have?

GPT-5.1 Codex Max
Response

gpt-5.1-codex-max logo
GPT-5.1 Codex MaxLogic Puzzle
gpt-5.1-codex-max logo
GPT-5.1 Codex Max

If each of the three boys has exactly two sisters, there are two girls in the family. Sally is one of them, so she has one sister.

Logic Puzzle

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This output lives in our open dataset — 5K+ responses across 200 models. Take it. It’s free.

About GPT-5.1 Codex Max

Capabilities

ConversationReasoningCode GenerationAnalysis

Categories

TextCodeMultimodal

Specifications

Provider
Openai
Released
2025-12-04
Size
XLARGE

Keep exploring

SAME PROMPT

Claude Sonnet 4.6's version

Same prompt, different result

COMPARE

GPT-5.1 Codex Max vs Google: Gemini 3.1 Flash Lite Preview

Both outputs, side by side

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