Meta Platforms has instructed engineers in its Applied AI division to limit or restrict their use of Anthropic's Claude Code and OpenAI's Codex coding and agent tools, according to internal documents reviewed by The Information. The policy, driven by concerns over inadvertent model distillation, aims to prevent outputs from rival AI systems from contaminating Meta's own training data and model development processes for its Llama family of models (which, quite frankly, could only help).