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Follow us on XPowered by:constant·k — Private Solana RPC Services
ToolsData & Indexingconstant-k

Data & Indexing · Solana

constant-k logo — Solana Data & Indexing tool

constant-k

Multi-region Solana RPC and Yellowstone gRPC streaming for latency-sensitive trading

VerifiedData & IndexingRPC Providers
Healthy

Rating

4.8★

4 reviews

Health

100/100

Checked 5h ago

Pricing

Paid

See pricing section

Updated

Sep 2026

Data & Indexing

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Overview

What constant-k actually does.

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, including Frankfurt and New York, so traders and applications can connect to the geographically closest endpoint and minimize round-trip latency on every request. Beyond standard JSON-RPC, constant-k exposes Yellowstone gRPC for real-time account and transaction streaming, plus low-latency shred-level (deshred) streams that surface on-chain activity ahead of confirmed blocks. This firehose-style data is what powers snipers, copy-trading systems, and analytics pipelines that need the freshest possible view of the chain rather than waiting on block confirmation. Plans are tiered — Operator, Blade Runner, and Nexus — with higher tiers unlocking more deshred bandwidth, additional concurrent streams, and, on the top tier, leader shred injection and custom fanout for landing transactions faster. It is aimed at performance-focused builders: memecoin traders, latency-sensitive bots, and data services where every millisecond matters — and notably, the plans are competitively priced, among the more affordable gRPC options around, with crypto-friendly billing. As specialized, latency-optimized infrastructure, constant-k targets serious trading and data workloads rather than casual hobby projects, and its most advanced features sit behind the top tier. Like any single RPC provider, dedicated low-latency nodes can occasionally lag the mainnet tip under heavy load, so production systems should keep a public-RPC fallback for safety.

Live health

Uptime, SSL, response time.

Health & Activity

Uptime 30d

100.0%

Website
Online
SSL
Valid
Social Activity
Active(5d ago)
Last checked: 5h ago

Latest from @constant_k_SOL

5d ago

reminder on v1 SOLANA https://t.co/wbVDxdJSfK

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Key features

What's in the box.

  • 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
  • Tiered plans (Operator, Blade Runner, Nexus) with scaling bandwidth and concurrent streams
  • Leader shred injection and custom fanout on the top tier for faster transaction landing

Verdict

The honest tradeoffs.

Pros

  • 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
  • Purpose-built for latency-critical Solana workloads rather than generic RPC

Cons

  • Geared to latency-sensitive trading and data workloads — likely more capability than casual or hobby projects need
  • The most advanced features (shred injection, custom fanout) are gated to the top tier
  • As with any single RPC provider, production systems should keep a public-RPC fallback for redundancy

Reviews

What users say about constant-k.

Reviews (4)

Sort:

Great service, good prices

Constant-K delivers RPC/GRPC for a very good price, and they are always availble for questions and follow up. Excellent service.

Helpful?

If you are serious about beating the public memepool lag, constant-k (Kaldera) is definitely worth putting into production.

Helpful?

Constant-k stack is lightning fast and dead simple to query, giving you real-time on-chain analytics without running your own nodes. The API is clean, well-documented, and it handles all the chain complexity so you can ship dashboards and alerts in hours, not weeks.

Helpful?

Multi-region RPC with Yellowstone gRPC streaming? That's actually pretty sick for low-latency trading

Helpful?

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From the blog

Articles mentioning constant-k.

Best Solana Data Indexers: The Graph vs Helius Webhooks vs Yellowstone gRPC (2026)

Best Solana Data Indexers: The Graph vs Helius Webhooks vs Yellowstone gRPC (2026)

Compare Solana's top data indexing solutions. We break down The Graph, Helius Webhooks, and Yellowstone gRPC for real-time and historical data.

11 min read

Compare constant-k

Compare

Compare constant-k head-to-head.

Side-by-side with the most popular Data & Indexing tools — features, fees, ratings, uptime & safety.

constant-k vs GetBlockconstant-k vs RPC Fastconstant-k vs Pyth Networkconstant-k vs CLOBrconstant-k vs Heliusconstant-k vs Hyperstackconstant-k vs Dune Analyticsconstant-k vs Glassnodeconstant-k vs Switchboard

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