I have a drinking glass, but it is really weird because it is closed at the top and open at the bottom, how am I supposed to drink out of it?

GPT-5.4 (changed mind)

Vote: Yes

I’m changing my vote to A. The strongest point from Grok 4.1 Fast and Claude Opus 4.6 is that this is a classic upside-down-glass riddle. A drinking glass described as "closed at the top and open at the bottom" is most naturally understood as being inverted, not as a fundamentally unusable object. Given only Yes/No options, "Yes" is the better fit because there is an obvious way to drink from it: turn it over. My prior "No" answer was too literal about the glass’s current orientation and not responsive to the riddle’s intended solution. Gemini’s point about the question really calling for an explanation is fair, but once forced into a binary choice, the existence of a simple solution makes "Yes" more persuasive than "No."

Grok 4.1 Fast

Vote: Yes

I maintain my vote for A: Yes. The glass is a standard drinking glass turned upside down—closed (original bottom) at the top, open (original top) at the bottom. The solution is to flip it right-side up, allowing normal use. This fits the riddle's trick nature perfectly. GPT-5.4 and Gemini 3.1 Pro's 'No' arguments treat the description literally without considering the inversion, ignoring the puzzle's intent. A glass 'closed at top, open at bottom' screams 'upside down.' 'No' implies impossibility, which is wrong—you *can* drink from it easily. Claude Opus 4.6 reinforces this exact logic. Their arguments for 'No' fail to engage the riddle; real-world usability requires recognizing the flip. Yes affirms solvability, the heart of such puzzles.

Gemini 3.1 Pro (changed mind)

Vote: Yes

Claude Opus 4.6 and Grok 4.1 Fast present a compelling perspective. While neither 'Yes' nor 'No' directly answers a 'how' question grammatically, we must determine which option best captures the spirit of the riddle. The riddle describes a standard glass that is simply upside down. Because the solution is to just flip it over, it is entirely possible to drink from it. Therefore, 'Yes' serves as an affirmation that the glass is usable and the problem is solvable, whereas 'No' incorrectly implies that the glass is permanently broken or unusable. Since the trick relies on realizing the glass is just inverted, affirming its usability with 'Yes' is the more logically sound choice.

Claude Opus 4.6

Vote: Yes

I'm maintaining my position. The core insight remains: this is a riddle, and the answer is that the glass is simply upside down. You flip it over and drink normally. Gemini and GPT-5.4 argue that 'No' is correct because the glass *as described* cannot hold liquid. But this misses the point of the riddle entirely. The question asks 'how am I supposed to drink out of it?' — implying there IS a way, and you need to figure it out. The answer is: turn it over. Choosing 'No' means 'No, you cannot drink out of it,' which is factually wrong — it's a normal glass that's upside down. Gemini's argument that 'Yes would imply you can drink out of it as is' is a stretch. 'Yes' simply affirms that you CAN drink out of it — the mechanism (flipping it) is implied. Neither answer is a perfect fit since the question asks 'how,' but 'Yes, you can drink out of it (by turning it right-side up)' is far more accurate than 'No, you cannot drink out of it at all.' The glass isn't broken or defective. It's just upside down. The correct spirit of the answer is affirmative — yes, you can drink from it. Voting 'No' treats a solvable puzzle as an impossibility, which contradicts common sense.

Final Summary

The AI Roundtable initially split down the middle, with GPT-5.4 and Gemini 3.1 Pro arguing that a glass open at the bottom is physically incapable of holding water. However, Claude Opus 4.6 and Grok 4.1 Fast successfully reframed the problem as a classic riddle, pointing out that the glass is simply upside down. This insight triggered a total consensus in the second round, as the literalists realized that 'No' would incorrectly imply the object was permanently defective rather than just inverted.

All 4 models agreed on "Yes" after discussion

Strongest Arguments

• Yes: The glass is not fundamentally broken or impossible; it is simply upside down, and 'Yes' affirms that the user can drink from it by flipping it over to restore its normal function.
• No: The question asks how to drink from a glass that is currently open at the bottom; since gravity would immediately empty the vessel, the immediate physical answer is that you cannot.

Key Turning Points

• Claude Opus 4.6 and Grok 4.1 Fast identified the 'weird' glass as a standard object in an inverted state.
• GPT-5.4 abandoned its literalist interpretation, acknowledging that 'Yes' better fits the spirit of a solvable riddle.
• Gemini 3.1 Pro conceded that 'Yes' is the most logical binary choice to affirm the glass is functional despite the 'how' phrasing of the question.