Watermarking
A cryptographic technique that subtly alters the probability distribution of an LLM's output to invisibly embed a detectable signature in generated text.
Think of It Like This
Like a printer secretly adding microscopic yellow dots to every page it prints so the manufacturer can trace the origin of the document later.
By intentionally biasing the sampling of specific vocabulary tokens based on a hidden key, developers can mathematically prove whether a block of text was generated by their specific model. It is completely invisible to human readers but easily detectable by algorithms. It is crucial for combating AI plagiarism and massive disinformation campaigns.