# chainlink and covalent data system

> difference between chainlink and covalent

**Published by:** [DE.FI](https://paragraph.com/@de.fi/)
**Published on:** 2025-08-29
**URL:** https://paragraph.com/@de.fi/chainlink-and-covalent-data-system

## Content

Both Covalent and Chainlink serve as critical data infrastructure providers for AI systems in the blockchain space, but they operate in distinct ways and serve different purposes.Covalent's Data ProvisionData Type: Historical and current on-chain dataCoverage: 200+ supported blockchainsData Structure:Full archival blockchain dataNormalized and aggregated multichain dataAccount balances, transaction histories, log events, NFT dataChainlink's Data ProvisionData Type: Real-time and off-chain data feedsDelivery Method:Push-based oracles for regular updatesPull-based Data Streams for low-latency market dataData Structure:Price feedsAPI data from external sourcesCross-chain messages and dataData Consumption PatternFor AI Systems Using CovalentData Access: AI systems can query historical blockchain data through:Unified REST APINo-code analytics toolsEnterprise-grade performance APIsFor AI Systems Using ChainlinkReal-time Data Flow: AI systems can consume data through:Decentralized Oracle NetworksData Streams for sub-second market dataCustom API connections for specific data needsKey DifferencesCovalent: Focuses on historical and aggregated blockchain data analysisChainlink: Specializes in real-time data feeds and external data integration

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