For centuries, Leonardo da Vinci’s “The Last Supper” has been observed, studied, restored and interpreted as one of the pinnacles of Western art history. Every gesture of the apostles, every look, every line of perspective has been the subject of meticulous analysis by historians, theologians and restorers. However, according to some recent research that is strongly circulating in the media debate, it is possible that we have misinterpreted a fundamental element of the work.
These would not be hidden symbols or subtle allegories, but real words, entire phrases written backwards, hidden under layers of paint, which an artificial intelligence would have identified during an advanced analysis of the fresco.
The news, initially spread in academic circles and then amplified by digital media, has sparked mixed reactions. On the one hand, there is enthusiasm among those who see technology as a new tool capable of revealing secrets buried for five centuries; on the other, the skepticism of many experts who urge caution. Leonardo da Vinci is perhaps the most scrutinized artist in history, and any supposed discovery about him inevitably generates a stir.
The central project of the debate arises from the application of artificial intelligence systems trained in ultra-high resolution image analysis. These algorithms are capable of identifying patterns, irregularities and traces invisible to the human eye, especially in works deteriorated by time, such as the Last Supper, which is not a traditional fresco, but a mural created using an experimental technique. This same fragility has caused the work to undergo numerous restorations, superimposition interventions, corrections and additions over time.
According to the promoters of the study, the AI detected sequences of signs under the layers of paint that allowed it to trace even letters and words, arranged on a mirror. This feature inevitably recalls one of Leonardo’s best-known traits: mirror writing, a common feature in his notebooks. This detail has contributed to the idea that the message could be authentically Leonardo’s and not the product of arbitrary interpretations.
However, this is precisely where the first major controversy arises. Many art historians point out that identifying letter-like shapes in deteriorated layers of paint is a known risk, linked to the phenomenon of pareidolia. Artificial intelligence, while a powerful tool, is not immune to this problem: if it is trained to “search for words,” it will tend to find them even where there are only cracks, restorations or surface irregularities.
The supposedly deciphered phrases have not been made public in a complete and verifiable manner, further fueling the debate. Some reports speak of messages with ambiguous theological content, which challenges traditional interpretations of the Last Supper scene. It is precisely this ambiguity that has led some to speak of a Vatican “concerned” or even “terrified” by the discovery. In reality, official sources have not confirmed such an institutional reaction.
Historically, the Church has faced numerous reinterpretations of sacred works without ever giving in to panic or censorship. Scholars close to ecclesiastical circles remind us that the Last Supper is, above all, a work of art, not a dogmatic document. Even if Leonardo had included notes, intellectual games or personal reflections, this would not automatically constitute a “rewriting of history”, but rather a further testament to the complexity of Renaissance genius.
Another element that is often overlooked in media coverage is the scientific method. Currently, the results of the analysis have not been published in peer-reviewed journals nor have they undergone full independent review. This does not mean that they are fake, but they still have to pass the fundamental stages of academic validation. In the world of research, especially when it comes to landmark work, public announcements often far precede rigorous verification.
The use of artificial intelligence in artistic analysis is a rapidly expanding field. Similar techniques have previously allowed researchers to identify preparatory drawings under famous paintings, attribute dubious works, and reconstruct lost parts. In this sense, the case of the Last Supper represents an important test case, not only for what it could reveal, but also for how these revelations are communicated to the public.
The risk, according to many experts, is turning potentially interesting research into sensational narratives. Phrases like “the truth has finally come to light” or “they are rewriting history” work well on social media, but they oversimplify a process that, by its very nature, is slow and complex. Art history is not rewritten with an algorithm, but through the critical comparison of sources, data and interpretations.
This does not change the fact that Leonardo da Vinci had a deep interest in the hidden layers of knowledge. His writings contain enigmas, linguistic games, allusions and reflections that defy a superficial reading. Therefore, it is understandable that the idea of a hidden message in the Last Supper fascinates millions. But there is a gap between fascination and certainty that cannot be bridged by technological enthusiasm alone.
Five hundred years after its creation, The Last Supper continues to question our present. Perhaps not because it contains secrets meant to shake the world, but because it reflects our constant need to find new meaning in what we think we know. Artificial intelligence, in this context, becomes a mirror: it shows us possibilities, raises questions, but does not provide us with definitive truths.
The real challenge today is not to discover whether Leonardo hid words under the painting, but to learn to distinguish between serious investigation and narrative suggestion. If subsequent studies confirm the existence of intentional inscriptions, we will find ourselves facing a discovery of great historical interest. If, on the other hand, it turns out to be an illusion generated by algorithms and expectations, it will still be an important lesson in how technology, art and communication are intertwined in the contemporary world.
In any case, one thing is certain: The Last Supper has not finished speaking to its viewers. And perhaps the most powerful message is not hidden under the painting, but in the continuous dialogue between the past and the present that this work continues to generate.