How did AI solve a 370-year-old cipher in just 44 minutes?

Imagine this: what would it feel like if there were a numerical code hidden in a dusty, old book that no one had been able to solve for 370 years? It sounds like a scene from a movie, but it actually happened. Recently, it was reported that Anthropic’s latest AI model, ‘Claude Fable 5.1,’ successfully deciphered a historical code that has remained unsolved for centuries.

Why does this matter?

This event signifies more than just AI being good at calculations. It demonstrates that the artificial intelligence we use has reached a level where it can grasp the context hidden within historical records and identify complex patterns that human experts had given up on for hundreds of years. This suggests that AI could play a decisive role in the future as a ‘digital detective’ in various academic fields such as archaeology, history, and cryptography, unearthing humanity’s forgotten records (Source 11).

Understanding the story

The code deciphered this time is the ‘Cyphral Distich,’ contained in Logopandecteision, a book published in 1653 by the Scottish writer Sir Thomas Urquhart (Source 3, Source 7).

Simply put, this code is a type of ‘number puzzle’ composed of two lines of 32 numbers (Source 1). To use an analogy: if humans have been struggling for centuries to assemble a massive puzzle consisting of tens of thousands of pieces, the AI identified how the pieces connected and completed it in just a few minutes. Just as we look for rules for each character when solving complex ciphers, the AI utilized its pattern recognition ability, which processes vast amounts of data, to find the meaning hidden within this numerical sequence.

How and where was it found?

According to a report by the AI evaluation firm Vals AI, it took Anthropic’s Claude Fable 5.1 model just 44 minutes to solve this mystery (Source 3, Source 7).

It turned out that behind these numbers, which had frustrated cryptographers for ages, was a secret Royalist prayer for King Charles II (Source 4, Source 5). What is even more surprising is that this code had been ‘hiding in plain sight’ since 1653 (Source 8, Source 9). To the human eye, it appeared as nothing more than a meaningless array of numbers, but to the AI, it was data teeming with history.

What happens next?

Through this case, we have confirmed that AI has exceeded human limits in terms of data processing speed and accuracy. If similar technology is applied in the future, it is highly likely that countless undeciphered documents sleeping in library or museum archives will be brought to light. It is expected to be particularly helpful in deciphering encrypted languages or records with unique rules, like 17th-century materials (Source 11). We may soon live in an era where AI tells us the stories behind history that we never knew.

MindTickleBytes AI Reporter’s Opinion

This is a fascinating case demonstrating that AI’s pattern recognition capabilities have evolved beyond simple language translation or sentence summarization into a tool capable of solving historical mysteries that have eluded humanity for centuries. Technology is now becoming the key to unlocking the secrets of the past.

References

1. Claude Fable 5.1 decoded a centuries-old royalist message hidden in plain sight since 1653
2. Claude Fable 5.1 decoded a centuries-old royalist message hidden in plain sight since 1653 - AI General - Gnoppix Forum
3. Claude Fable 5.1 solves a 370-year-old cipher in a Vals AI test • It Does What Now?
4. The Claude Fable 5.1 model from Anthropic deciphered a 17th-century cryptogram by Scottish writer Thomas Urquhart in 44 minutes, which cryptographers have been trying to solve since 1653 - Pravda UK
5. Claude’s Fable 5.1 model cracked the code that cryptographers had been trying to crack since 1653 in 44 minutes. - Aroged
6. Claude Deciphers 17th-Century Ciphers in Urquhart’s Treatises
7. Claude Fable 5.1 Decrypts 370-Year-Old Cyphral Distich Mystery
8. Anthropic’s Claude Fable 5.1 Unveils Hidden Royalist Message
9. Claude Fable 5.1 decoded a centuries-old royalist message hidden in plain sight since 1653
10. Claude Fable 5.1 solves 1653 Cyphral Distich puzzle
11. Anthropic’s Claude 5.1 Successfully Decodes Undeciphered 1653 Historical Encrypted Message
12. Anthropic AI Cracks 373-Year-Old Cipher, Faces Reproduction