Keywords AI
Compare Carbon (Perplexity) and Unstructured side by side. Both are tools in the RAG Frameworks category.
| Category | RAG Frameworks | RAG Frameworks |
| Pricing | usage-based | Freemium |
| Best For | B2B startups needing data ingestion from multiple sources | Enterprises that need to extract structured data from large volumes of unstructured documents |
| Website | carbon.ai | unstructured.io |
| Key Features |
|
|
| Use Cases | — |
|
Carbon, acquired by Perplexity in December 2024, provided pre-built data connectors for ingesting unstructured data from 25+ sources into LLM applications. Its managed API was wound down in March 2025, with its technology now integrated into Perplexity's enterprise data connectivity stack. Carbon's connectors supported Google Drive, Notion, Slack, Confluence, and other popular data sources for RAG pipelines.
Unstructured is the leading data ingestion platform for AI applications, transforming unstructured data—PDFs, Word documents, HTML, images, emails—into clean, structured formats ready for LLM consumption and RAG pipelines. The platform handles document parsing, OCR, table extraction, and chunking with high accuracy. Available as open-source and a managed API service, Unstructured is used by enterprises to prepare large document corpora for AI processing.
Frameworks and tools for building retrieval-augmented generation pipelines—document parsing, chunking, indexing, and query engines that connect LLMs to your data.
Browse all RAG Frameworks tools →