Compare Captain and Carbon (Perplexity) side by side. Both are tools in the RAG Frameworks category.
| Category | RAG Frameworks | RAG Frameworks |
| Pricing | Unknown | usage-based |
| Best For | Teams building AI agents that need accurate knowledge access | B2B startups needing data ingestion from multiple sources |
| Website | runcaptain.com | carbon.ai |
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Accurate knowledge search that scales for AI agents — production-grade retrieval infrastructure.
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.
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 →