Hosted and free or subscription-based DeepResearch like tools that integrate LLMs with search functionality (the whole domain of "RAG" or "Retrieval Augmented Generation") will be elementary for a long time yet simply because the cost of the average query starts to go up exponentially and there isn't that much money in it yet. Many people have and will continue to build their own research tools where they can determine how much compute time and API access cost they're willing to spend on a given query. OCR remains a hard problem, let alone appropriately chunking potentially hundreds of long documents into context length and synthesizing the outputs of potentially thousands of LLM outputs into a single response.