Arkestro, which uses machine learning, game theory, and behavioral science to help companies procure supplies and services, raised a $26M Series A (Ron Miller/TechCrunch)

Invoca, which uses AI to analyze contact center calls, has raised $83M led by Silver Lake Waterman at a $1.1B post-money valuation  —  Invoca, a platform that uses AI to analyze calls for marketing, sales, and customer agent training purposes, today closed an $83 million funding round that values the company at $1.1 billion post-money.