Alchemy vs constant-k

Overview

Alchemy Alchemy is a multi-chain blockchain developer platform that provides RPC node infrastructure, enhanced data APIs, and developer tooling across many networks, including Solana. It positions itself as w... 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

Alchemy is rated higher by the MadeOnSol community with 5.0/5 stars across 1 review, compared to 4.8/5 for constant-k (4 reviews). That said, ratings only tell part of the story — what matters most is which tool fits your specific workflow.

Pricing & Value

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

Key Features

Alchemy offers 5 features including Multi-chain managed RPC nodes accessed via standard JSON-RPC and WebSocket endpoints, with multiple layers of autonomous failover and a stated 99.99% uptime, Solana support including staked connections for transaction delivery, optimized heavy methods (e.g. getProgramAccounts), and flexible archive data sorted by recency or compression, gRPC streaming for Solana with on-demand historical slot replay, plus smart WebSockets to reduce dropped connections, 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. Alchemy 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