Head-to-head · Data & Indexing
Features, pricing, health score, community ratings — side-by-side from the live MadeOnSol database.
Updated September 1, 2026
 |  | |
|---|---|---|
| Rating | (4) | (1) |
| Pricing | Paid | Paid |
| Health | Healthy | Healthy |
| Chain | Solana | Solana |
| Open Source | ||
| Features | 5 features | 5 features |
| Upvotes |
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Pros & cons
Analysis
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... Irys Irys (formerly Bundlr) is a programmable datachain that provides permanent, verifiable data storage for blockchain applications. In the Solana ecosystem, Irys is widely used for storing NFT metadata,...
Irys 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.
constant-k uses a paid model, while Irys is paid.
constant-k offers 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. Irys counters with 5 features including Permanent data storage with one-time payment, SOL payment support for Solana developers, NFT metadata and image hosting, and 2 more. The right choice depends on which specific features matter for your use case — check the individual review pages for full breakdowns.
We monitor both tools around the clock for uptime, SSL validity, and response times. constant-k currently has a healthy health status with 100.0% uptime over the last 30 days. Irys is rated healthy with 100.0% uptime. For any tool you trust with your funds, trades, or yield, uptime and speed are non-negotiable.
constant-k's key strengths include multi-region nodes let you connect to the closest endpoint for minimal latency, yellowstone grpc plus deshred streams suit snipers, copy-trading, and data pipelines, competitively priced — among the more affordable grpc providers, with crypto-friendly tiered plans. Irys stands out for permanent storage eliminates hosting concerns, native sol payment integration, widely used in solana nft ecosystem.
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| ▲ 4 |
| ▲ 0 |
| Twitter Followers | 218 | 239,397 |
| Categories | Data & Indexing, RPC Providers | Data & Indexing |
| Description | Multi-region Solana RPC and Yellowstone gRPC streaming for latency-sensitive trading | Programmable datachain for permanent on-chain data storage |
Both constant-k and Irys operate in the data & indexing space, so this is a direct head-to-head. Irys has the community's vote, but your mileage may vary depending on your specific needs. We recommend trying both — check constant-k's pricing and check Irys's pricing. Read user reviews on each tool's page for real-world feedback from the Solana community.