Activision partnered with a company called Modulate to add an AI system called ToxMod to Call of Duty's voice chat. ToxMod listens to in-game voice conversations and automatically flags or acts on harassment, hate speech, and other toxic behavior — without waiting for players to report each other. It launched in beta in August 2023 and rolled out globally with Modern Warfare III in November 2023.

Unlike simple word-filter systems, ToxMod analyzes speech using context, emotional tone, and perceived intent — meaning the same word can be flagged or ignored depending on how it is said and who says it. The system was trained to understand the difference between trash talk and genuine harassment. After its global rollout with Modern Warfare III, Activision reported a 50% reduction in severe toxic voice chat incidents and action taken against up to two million accounts. The system expanded from English, Spanish, and Portuguese to include French and German for Black Ops 6. Repeat offenses dropped by approximately 8% month-over-month. Activision's CTO described ToxMod as "state of the art machine learning technology that can scale in real-time."