OpenAI Hardens ChatGPT Defenses While Google Shrinks Gemma 4 for Mobile

OpenAI's move toward deterministic network filtering provides a robust defense against data exfiltration that probabilistic models alone cannot offer. Google's release of Gemma 4 QAT checkpoints signals a new era for on-device AI, delivering high-quality inference in a sub-1GB footprint suitable for production mobile environments.