AI ROI Dataset: 200 B2B Deployments Analysis (2022-2025)

Observational dataset of 200 B2B AI deployments in France (2022-2025). Central metric: gain-to-investment ratio. Median annual gain equals 159.8% ofinvestment (1.60x) across the 165 deployments carried through to production;127.4% (1.27x) across the full cohort of 200, failures included. This is again-to-investment ratio, not a net ROI: under the standard accountingdefinition the corresponding medians are 59.8% and 27.4%. Production rate: 82.5% (165/200). 12-month profitability rate: 60.5% (121/200).Median time to positive return: 259 days. Deployments with documented humanoversight: 88.5% of the cohort (83.6% production rate vs 73.9% without). Version 2.0 corrects the published definition of the roi_percent variable andpublishes both calculation scopes. No data was modified. Self-published, not peer-reviewed, no independent audit. The author was involvedas consultant or service provider in a majority of the documented deployments.Reproduction script included (verify_metrics.py, no dependencies).