oracles.ink

Chainlink vs API3

Chainlink (The industry-standard oracle network ) versus API3 (First-party oracles with built-in OEV recapture ) — how they differ on type, coverage and what they’re built for.

	Chainlink	API3
Type	Push + Pull	Push + OEV
Update model	Decentralized Oracle Networks (DONs); heartbeat + deviation threshold. Data Streams add a low-latency pull mode.	Data providers run their own Airnode (no middlemen). The OEV Network auctions the value of each oracle update back to the dApp instead of leaking it to searchers.
Chains	40+	Many EVM L2s
Feeds	1,000+	dAPIs
Security	Many independent, Sybil-resistant node operators per DON, with LINK staking and reputation.	First-party provenance (data signed at source) + API3 DAO governance.
TVS*	~$33B	Specialized
Token	LINK	API3
Best at	Broadest coverage + a full stack: CCIP cross-chain, VRF randomness, Functions, Proof of Reserve, Data Streams	First-party data + OEV recapture — turns oracle-update MEV leakage into protocol revenue

* Approximate total value secured — dated market snapshot (DefiLlama / provider reports, 2026).

Chainlink

Most battle-tested and widely integrated
Widest chain + feed coverage
Full product suite beyond price (CCIP, VRF, PoR)

Push feeds cost on-chain gas to maintain
Standard feeds less granular than pull for HFT-style use

API3

Removes data middlemen (first-party)
OEV returns value to the protocol
Transparent data provenance

Smaller TVS / adoption
Fewer feeds than the top providers

Bottom line

Pick Chainlink when broadest coverage + a full stack: ccip cross-chain, vrf randomness, functions, proof of reserve, data streams matters most; pick API3 when first-party data + oev recapture matters more.