Reuters Institute (Feb 2024, baseline, by country) · BuzzStream (Apr 2026, by crawler, top 100 news sites).
% of most-used news sites blocking OpenAI GPTBot, end-2023.
% of top news sites blocking each crawler, Apr 2026.
79% of top news sites block ≥ 1 training bot by Apr 2026 (vs. ~20% mid-2023). 71% also block live-retrieval bots used by chat UIs.
Fletcher, Reuters Institute, Feb 2024 · BuzzStream, “Which News Sites Block AI Crawlers in 2026,” Apr 8 2026