By Jaspreet Singh (Reuters) -Snap (SNAP) stock rose 15% before the bell on Thursday after beating third-quarter revenue estimates on Wednesday and said it has partnered with Perplexity AI (PEAI.PVT) to integrate its artificial intelligence-powered ​search engine into Snapchat, sending the social media firm's shares up 16%‌ after the bell. AI startup Perplexity will pay Snap $400 million over one year in cash and equity, with revenue ‌contributions expected from 2026. The integration will offer verifiable ...