Notes on AI that actually helps.

What we learn building AI tools for real businesses — written in plain language, with real examples. No hype, no names.

Chatbots & assistants

21 July 2026·6 min read

AI in customer support: what the 5,172-agent study measured

Brynjolfsson, Li and Raymond (QJE, 2025): +15% issues resolved per hour on average, mostly for less experienced agents. What it means for your support team.

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Chatbots & assistants

19 July 2026·7 min read

Internal company chatbot: GDPR, works council, cost and accuracy

Before launching an internal HR or IT chatbot in France: what labor law and GDPR require, public tool prices (checked Sept. 23, 2026) and the error rate to expect.

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Chatbots & assistants

9 July 2026·6 min read

WhatsApp Business API pricing 2026: what becomes paid

From October 1, 2026, WhatsApp service messages and utility templates sent inside the 24-hour window are billed; since August 1, Meta Business Agent is billed per token. What changes, what stays free, and how to estimate your bill.

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