Head-to-head · RPC Providers
Features, pricing, health score, community ratings — side-by-side from the live MadeOnSol database.
Updated August 29, 2026
 |  | |
|---|---|---|
| Rating | (4) | (0) |
| Pricing | Paid | Freemium |
| 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... Carbium Carbium is a Solana-focused infrastructure platform built around RPC nodes the company runs on its own hardware in Switzerland, advertising sub-50ms latency and 99.99% uptime. It combines node infrast...
constant-k is rated higher by the MadeOnSol community with 4.8/5 stars across 4 reviews, compared to 0.0/5 for Carbium (0 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 Carbium is freemium.
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. Carbium counters with 5 features including Solana RPC nodes with gRPC and WebSocket, Swiss-hosted owned infrastructure, Aggregated-liquidity DEX, 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. Carbium 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. Carbium stands out for integrated rpc and trading in one stack, gasless swaps remove sol fee friction, mev protection via jito tips.
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| ▲ 4 |
| ▲ 1 |
| Twitter Followers | 212 | — |
| Categories | Data & Indexing, RPC Providers | RPC Providers, Analytics & Charts |
| Description | Multi-region Solana RPC and Yellowstone gRPC streaming for latency-sensitive trading | Swiss-engineered Solana RPC infrastructure with sub-50ms latency |
Both constant-k and Carbium operate in the rpc providers space, so this is a direct head-to-head. constant-k 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 Carbium is free to start. Read user reviews on each tool's page for real-world feedback from the Solana community.