Watermarking AI-Generated Text: From Steganography to SynthID-Text

How can AI models invisibly watermark generated text without hidden characters or metadata? This article explains the path from classical and linguistic steganography to modern LLM watermarking techniques, including green/red tokens, pseudorandom functions, entropy, Tournament Sampling, and SynthID-Text, as well as detection methods, limitations, and resistance to editing and paraphrasing. Read the full article