# AI Text Saturates the Training Corpus

As machine-written text takes a growing share of the open web, verified human-written and pre-2023 data will become scarcer and more valuable, pushing labs toward licensing deals, provenance filtering and synthetic-data pipelines they control.

- Conviction: 40 / 100 (forming)
- Horizon: Emerging (watchlist)
- Tracking since: 2026-10-29T00:00:00.000Z
- Last updated: 2026-10-29T06:40:54.498Z
- Canonical: https://polylog.news/ai/trends/ai-text-saturates-training-corpora
- Publisher: Polylog

## Recent evidence

- [confirms] New study of more than 5 million pages estimates 24% of crawlable web pages carried AI-written text in August 2026 (2026-10-29): A study of more than 5 million pages estimates that 24% of crawlable web pages carried AI-written text in August 2026, against Pew Research Center's 10% for July. Both studies put the share near zero before 2022 and find it rising fastest on commercial sites, so verified human-written and pre-2022 data is getting scarcer whichever detector you trust.