Ankr vs constant-k

Overview

Ankr Ankr is a multi-chain Web3 node and RPC infrastructure provider that gives developers programmatic access to blockchain data across 80+ networks, including Solana, Ethereum, Bitcoin, Polygon and Arbit... constant-k constant-k (Kaldera) is a high-performance Solana infrastructure provider delivering low-latency RPC endpoints and Yellowstone gRPC streaming. It runs dedicated nodes across multiple regions, includin...

Community Ratings

Ankr is rated higher by the MadeOnSol community with 5.0/5 stars across 1 review, compared to 4.7/5 for constant-k (3 reviews). That said, ratings only tell part of the story — what matters most is which tool fits your specific workflow.

Pricing & Value

Ankr uses a freemium model, while constant-k is paid.

Key Features

Ankr offers 5 features including Multi-chain RPC node access across 80+ blockchains including Solana, with HTTPS and WSS endpoints, Advanced APIs (Token API, NFT API, Query API) serving indexed and cached blockchain data for multi-chain queries, Globally distributed node network with platform-level load balancing across multiple regions, and 2 more. constant-k counters with 5 features including Low-latency Solana JSON-RPC endpoints across multiple regions (Frankfurt and New York), Yellowstone gRPC streaming for real-time account and transaction data, Low-latency shred-level (deshred) streams that surface activity ahead of confirmed blocks, and 2 more. The right choice depends on which specific features matter for your use case — check the individual review pages for full breakdowns.

Reliability & Health

We monitor both tools around the clock for uptime, SSL validity, and response times. Ankr currently has a healthy health status with 100.0% uptime over the last 30 days. constant-k is rated healthy with 100.0% uptime. For any tool you trust with your funds, trades, or yield, uptime and speed are non-negotiable.

Strengths

Ankr's key strengths include single provider covering 80+ chains, useful for multi-chain projects, free public and freemium tiers allow testing before paying, flexible credit-based billing with pay-as-you-go ($10 minimum) and monthly deal options.