Samsung Electronics Co. is nearing a wide-ranging deal to invest in Perplexity AI Inc. and put search technology from the artificial intelligence startup at the forefront of the South Korean company’s devices. The two companies are in talks to preload Perplexity’s app and assistant on upcoming Samsung devices and integrate the startup’s search features into the Samsung web browser, according to people with knowledge of the matter. The firms have also discussed weaving Perplexity’s technology int...