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StreamSync vs Helius
Hosted RPC + enhanced webhooks
Helius is the cleanest single-vendor option in the Solana market. We compete on structural redundancy and contract-enforced latency.
| Feature | StreamSync | Helius | Advantage |
|---|---|---|---|
| Latency SLA | Sub-10ms enforced by payment contract | Marketing target, credit on miss | StreamSync |
| Failover model | Racing 3–5 operators per query | Single backend with HA pool | StreamSync |
| Pricing | Per-query market rate; pay on outcome | Monthly subscription with rate limits | Comparable |
| Webhooks | Adapter layer (community) | Native, polished, decoded | Helius |
| Query surface | DuckDB SQL + standard RPC | Standard RPC + enhanced REST | StreamSync |
| Vendor lock-in risk | Multi-operator by design | Single vendor | StreamSync |
| Onboarding speed | Same-day with prepay USDC | Instant with API key | Helius |
| Settlement | On-chain in 5-minute batches | Off-chain monthly invoice | Comparable |
Pick StreamSync when
- ▸You need multi-operator redundancy without writing failover code
- ▸You want a per-query bill that does not charge for missed SLAs
- ▸Your workload is analytical SQL via DuckDB, not webhook-driven
- ▸You have been burned by vendor lock-in and never want to migrate again
Pick Helius when
- ▸You need polished enhanced-webhook tooling today
- ▸You need a single-counterparty contract with SOC2
- ▸You are prototyping and time-to-first-response matters most
Still deciding?
Most production teams use more than one provider. Try StreamSync behind a feature flag for the queries where latency matters most and keep Helius for everything else.