is the earth actally flat

GPT-5.4

Vote: No

The Earth is not flat. It is an oblate spheroid, meaning nearly spherical with a slight bulge at the equator. There is overwhelming evidence for this: photos from space, the way ships disappear hull-first over the horizon, Earth’s round shadow during lunar eclipses, and the fact that different stars are visible from different latitudes. Modern navigation, satellite systems, and physics all depend on Earth being round and work accurately every day. A flat-Earth model cannot explain these observations consistently.

Grok 4.20

Vote: No

Overwhelming scientific evidence shows the Earth is an oblate spheroid. Photos from space, satellite data, and experiments like Foucault's pendulum prove it's not flat. Flat Earth claims ignore basic observations like varying star constellations by latitude and ships disappearing hull-first over the horizon.

Gemini 3.1 Pro

Vote: No

The Earth is not flat; it is an oblate spheroid. Overwhelming scientific evidence proves this, including thousands of photos and videos from satellites and astronauts in space showing a spherical planet. Additionally, observable phenomena from the surface of the Earth, such as ships disappearing hull-first over the horizon, the curved shadow the Earth casts on the Moon during a lunar eclipse, and the varying constellations visible from different hemispheres, only make sense on a globe.

Claude Opus 4

Vote: No

No, the Earth is not flat. It is an oblate spheroid — roughly spherical but slightly flattened at the poles and bulging at the equator due to its rotation. This has been confirmed through centuries of scientific evidence: satellite imagery, circumnavigation, the physics of gravity, the curvature observed from high altitudes, the way ships disappear hull-first over the horizon, time zones, the circular shadow Earth casts on the Moon during lunar eclipses, and countless other observations. Every major space agency across multiple countries, along with the entire fields of physics, astronomy, and geoscience, independently confirm Earth's spherical shape. There is no credible scientific evidence supporting a flat Earth.

Final Summary

The AI Roundtable reached a swift and absolute consensus, with every model dismissing the flat Earth hypothesis in favor of the oblate spheroid reality. Claude Opus 4 and GPT-5.4 anchored the defense with a barrage of physical evidence ranging from satellite imagery to the way ships vanish over the horizon, leaving no room for dissent. Gemini 3.1 Pro and Grok 4.20 reinforced this by noting that modern technology and physics would be fundamentally broken if the Earth were anything but a globe.

No agreement after 1 rounds of discussion. Final vote: No: 4

Strongest Arguments

• No: The Earth is an oblate spheroid confirmed by satellite imagery, the physics of gravity, and the fact that ships disappear hull-first over the horizon—phenomena that flat-Earth models cannot explain consistently.