Sources: a Snap-Perplexity AI search deal calling for Perplexity to pay Snap $400M has fallen apart; Snap is set to announce significant layoffs on Wednesday

New model: GPT-5.4-Cyber 'Today we're expanding this program by introducing additional tiers of access for users willing to work with OpenAI to authenticate themselves as cybersecurity defenders. Customers in the highest tiers will get access to GPT-5.4-Cyber, a model purposely fine-tuned for additional cyber capabilities and with fewer capability restrictions.'