If you're looking for a Lettria alternative, Metatext is worth considering. It lets you create and train your own NLP models with no programming expertise. Metatext can handle tasks like text classification, tagging and generation, and is geared for customer support, customer insights and content moderation use cases.
If you want an API-first option, Graphlit is a broad platform for managing unstructured data from many sources. It can handle OCR, LLM-based text extraction and multimodal data like automatic transcription of audio and descriptions of images. Graphlit's serverless design and managed API integration makes it easy to deploy without worrying about infrastructure.
Last, Writer is a full-stack generative AI platform with more advanced tools like Knowledge Graph and AI Guardrails to keep your AI from violating regulations. It can handle multiple languages and has flexible deployment options, making it a more powerful option for businesses that want to use AI securely and at scale.