Carbon (Perplexity) vs R2R (2026)
Overview
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.
End-to-end open-source RAG engine with server, API, and pipeline pre-built. RAG to Riches.
Key features
Core capabilities each platform advertises.
- Data connectors
- Google Drive
- Notion
- Slack integration
R2R- RAG engine
- End-to-end
- Deployable
- Open source
Strengths and tradeoffs
What each tool does well, and the limitations to keep in mind.
Pros
- Pre-built connectors for easy integration with multiple data sources
- AI-optimized data processing with automatic chunking, embedding, and cleaning
- Enterprise-grade security with SOC 2 Type II compliance and end-to-end encryption
- Streamlined RAG development with production-ready infrastructure
- Now backed by Perplexity AI with enhanced enterprise capabilities
Cons
- Company was acquired and original standalone service is winding down
- Pricing information not transparently available
- Limited documentation on migration paths after acquisition
- Uncertain future roadmap as integration with Perplexity progresses
R2RPros
- Fully open-source with option to self-host for complete control
- Advanced Deep Research API with multi-step reasoning capabilities
- Y Combinator-backed with strong technical founding team
- Generous free tier on managed cloud platform
- Production-ready with RESTful API, hybrid search, and knowledge graph support
Cons
- Very small team which may impact support and development velocity
- Limited publicly available pricing information for paid tiers
- Relatively new company and platform (founded 2023)
- May require technical expertise to fully leverage advanced features
Compare Carbon (Perplexity) and R2R on your own traffic
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