Publicis Groupe has launched CoreAI, a new AI platform, and announced a €300 million investment in AI initiatives over the next three years. CoreAI integrates data and AI models from across the company's subsidiaries, including Publicis Sapient and Epsilon. The platform is designed for media planning, creative production, software development, and more, leveraging massive data assets and AI partnerships with companies like OpenAI and Microsoft. Publicis also aims to bolster training and recruitment to support its AI efforts.