From the source
Harvey announced a range of new capabilities for its AI-powered legal platform, including the availability of
OpenAI's GPT-5.4 model across Assistant, Vault, and Agent Builder.
Users can now edit Word files directly in Assistant, batch-edit multiple documents, and sync folders from document management systems to Vault.
The update also introduces a Box integration, custom writing styles, improved Magic Prompt, and expanded legal research sources.
