QuickNode vs ChainPending
QuickNode offers comprehensive node infrastructure with Streams for mempool access. Here's how it compares to ChainPending's pre-simulated transaction approach.
The Key Difference
ChainPending includes simulation in every transaction. QuickNode Streams delivers raw pending transactions — you'd need their Simulation Add-on (separate cost) to get event logs. With ChainPending, logs are already included.
| Feature | QuickNode | ChainPending |
|---|---|---|
| Mempool/Pending TX Access | Via Streams (Add-on) | Core feature |
| Pre-Simulated Event Logs | Requires Simulation Add-on | Included with every TX |
| Additional Simulation Cost | Yes, per-call pricing | No extra cost |
| Real-time Streaming | Yes (Streams) | Yes (WebSocket) |
| Ethereum Support | Yes | Yes |
| BNB Chain Support | Yes | Yes (ultra-low latency) |
| Base Flashblocks | Standard access | Real-time (all tiers) |
| Filtering Options | Advanced filters | Address & method filters |
| Pricing Transparency | Credits + Add-ons | Fixed monthly plans |
What is QuickNode?
QuickNode is a leading blockchain infrastructure provider offering high-performance node endpoints across 25+ chains. Their Streams product provides real-time blockchain data including mempool access, and their Simulation Add-on enables transaction simulation.
QuickNode excels at general-purpose blockchain infrastructure. However, to get both pending transactions AND simulated logs, you need to combine Streams (for mempool data) with the Simulation Add-on (for event logs) — each priced separately based on usage.
What is ChainPending?
ChainPending is a specialized service focused exclusively on delivering pending transactions with pre-simulated event logs. We've built dedicated simulation infrastructure that processes every pending transaction before delivering it to you.
This means you receive transactions ready for analysis — see token transfers, swap amounts, liquidity events, and more without making any additional API calls. Perfect for MEV extraction, arbitrage detection, and real-time DeFi monitoring.
Cost Comparison Example
Let's compare what it costs to process 100,000 pending transactions with simulation:
QuickNode
- • Streams subscription for mempool access
- • + Simulation Add-on per transaction
- • + Base node endpoint costs
- = Variable cost, scales with usage
ChainPending
- • Single subscription includes everything
- • Unlimited simulated transactions
- • No per-transaction fees
- = Fixed monthly cost: €19.99 - €199.99
When to Use Each
Choose QuickNode if:
- •You need multi-chain node infrastructure
- •You want advanced Stream filtering
- •You only need raw mempool data
- •You prefer managing simulation yourself
Choose ChainPending if:
- ✓You need simulated logs with every TX
- ✓You want predictable monthly costs
- ✓You're building MEV or arbitrage systems
- ✓You want the simplest integration
Skip the Simulation Add-on
Get pending transactions with event logs included from day one. No add-ons, no per-transaction fees, no surprises.