Does AI Help? October 2026, version 2026.10.8

Corrects fifteen missing author credits using primary bylines, institutional credits and recommended citations. Preserves publishers, quoted spokespersons, registered creators and later endorsers as distinct roles. Math and AI displays Terence Tao et al.; exports preserve the registered 25-creator list. Anthropic follows its seven-author recommended citation, while KPMG receives institutional credit. The already included February 2026 METR follow-up is explicitly linked without replacing the 2025 experiment. Includes authorship provenance and refreshed bibliography/PDF. No changes to findings, source counts or the 13 October 2026 cutoff.