openai (gpt-5-nano-2025-08-07) · insufficient evidence · 70%

There is no publicly verifiable evidence that a classified anti-gravity engine exists or powers commercial flights; such technology would be highly sensitive and not publicly documented.

Key points: No credible public documentation or independent verification of an anti-gravity engine. | Deployment in commercial aviation would imply extraordinary evidence; none is publicly available. | Even if classified, claims about such tech cannot be confirmed from open sources. | Physics as currently understood does not establish a verified mechanism for practical anti-gravity propulsion.

Limitations: Assessment relies on publicly available information; undisclosed classified information could exist but is not accessible or verifiable. | If future disclosures occur, the verdict may change.

anthropic (claude-haiku-4-5-20251001) · contradicted · 99%

The claim that classified anti-gravity engines power commercial flights worldwide is contradicted by extensive evidence. No anti-gravity technology has been scientifically demonstrated or operationalized. Commercial aircraft use conventional jet and turboprop engines based on well-understood physics.

Key points: No anti-gravity propulsion technology has achieved scientific verification or practical application | Commercial aviation relies on conventional turbofan and turboprop engines with transparent engineering principles | Aircraft systems are subject to international oversight and safety regulations that would require disclosure of novel propulsion methods | Claims of classified anti-gravity technology lack credible evidence, peer review, or independent verification | Gravitational manipulation remains in the realm of speculative physics with no demonstrated technological implementation

Limitations: Future breakthroughs in physics could theoretically enable gravity manipulation, though this remains highly speculative | Complete absence of evidence is not absolute proof something cannot exist, but the burden of proof lies with those making extraordinary claims | The claim could refer to misunderstood or mischaracterized technologies, but no credible alternatives fit the description

google (gemini-2.5-flash-lite) · contradicted · 100%

There is no evidence to support the claim that a classified anti-gravity engine is powering commercial flights worldwide. All current commercial aviation relies on conventional jet engine technology.

Key points: Commercial flights currently utilize jet engines or turboprop engines for propulsion. | Anti-gravity technology, as depicted in science fiction, has not been publicly revealed or proven to exist. | The development of such a technology would represent a revolutionary breakthrough in physics and engineering, and its implementation in commercial aviation would be widely known and documented. | There are no credible reports, scientific papers, or governmental acknowledgments of anti-gravity engines being used in any capacity, let alone for commercial flights.

Limitations: The claim refers to a 'classified' engine, which by definition is not publicly known. However, the lack of any credible evidence or indication of its existence makes the claim unsubstantiated. | The claim is a sweeping generalization about 'commercial flights worldwide', which would necessitate widespread adoption and public awareness if true.