> ## Documentation Index
> Fetch the complete documentation index at: https://www.helius.dev/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# LaserStream FAQs

> Get answers to the most common questions about LaserStream including purchasing, usage, troubleshooting, and subscription management

## Purchasing LaserStream

<Accordion title="Why is LaserStream better than a dedicated gRPC node?">
  LaserStream supports [nine regional endpoints](/laserstream/grpc#mainnet-endpoints), auto-fails over with replay, and is a drop-in replacement for Geyser. You get higher throughput and resilience compared to dedicated nodes. For more info, check our [comparison](/laserstream/laserstream-vs-dedicated-nodes).
</Accordion>

<Accordion title="How do I get access to LaserStream?">
  LaserStream Devnet is available on Developer, Business, and Professional [plans](/billing/plans). LaserStream Mainnet requires a Business or Professional plan. [Get started from your Helius Dashboard](https://dashboard.helius.dev/laserstream), then follow the [LaserStream gRPC quickstart](/laserstream/grpc) to connect your first stream.
</Accordion>

<Accordion title="What are the LaserStream Plus add-ons and how much do they cost?">
  LaserStream Plus add-ons transform your Professional plan's pay-per-use model into predictable monthly costs. Available in five tiers: 5TB (\$400), 10TB (\$750), 25TB (\$1,750), 50TB (\$3,250), and 100TB (\$6,000) per month. Each tier includes the specified data allowance with no credits consumed, then 2 credits per 0.1 MB for overages. [View detailed pricing](/billing/plans).
</Accordion>

<Accordion title="What Solana data streaming product offers the lowest latency data streams?">
  For the absolute lowest latency, [Raw Shreds (UDP)](/shred-delivery/raw-shreds) provide unprocessed shreds directly from the network with the earliest possible access to transaction data.

  As the top validator by stake, Helius receives shreds before most other network participants.

  [Subscribe in your Helius Dashboard](https://dashboard.helius.dev/shred-delivery-seats). Shreds typically begin arriving within 5 seconds of submitting your server IP address.

  Each seat is \$1,000/month per IP (\$800/month per IP on Pro plans). See the [plans](/billing/plans) page for more details.

  For production applications requiring processed data with commitment guarantees, [LaserStream](/laserstream) offers the lowest latency among processed streaming solutions.

  It connects directly to Solana leaders and spans multiple regional endpoints to minimize geographic latency. [Get started with LaserStream](https://dashboard.helius.dev/laserstream) from your Helius Dashboard.
</Accordion>

<Accordion title="Does Helius offer a shred streaming product like Jito's ShredStream?">
  Yes! Helius offers [Raw Shreds (UDP)](/shred-delivery/raw-shreds), our premier low-latency shred delivery service that provides the earliest possible access to raw Solana transaction data.

  Shred Delivery delivers unprocessed shreds directly from the network, offering a significant competitive edge for high-frequency trading and arbitrage strategies.

  You can [subscribe to Raw Shreds](https://dashboard.helius.dev/shred-delivery-seats) directly from your Helius Dashboard. Simply add a seat and enter your IP address - no manual provisioning required.

  Each seat is \$1,000/month per IP (\$800/month per IP on Pro plans).

  As the top validator by stake, Helius receives shreds faster than validators with less stake and non-staked RPC nodes, ensuring you get the first look at transactions as they occur on-chain.

  **Key differences from LaserStream:**

  * **Shred Delivery**: Raw, unprocessed shreds with the absolute lowest latency. Self-serve via Helius dashboard. Requires deshredding logic. For a reference starting point, see [Jito's ShredStream Proxy](https://github.com/jito-labs/shredstream-proxy).
  * **LaserStream**: Processed data with commitment-level guarantees, 24-hour historical replay, and developer-friendly SDKs for production applications.
</Accordion>

<Accordion title="What are LaserStream's practical filter limits?">
  Up to **10 million** account includes per stream, unlimited program filters. Connection limits vary by plan: Business plans get up to **10 concurrent gRPC connections**, Professional plans get up to **100 concurrent gRPC connections**.
</Accordion>

## Using LaserStream

<Accordion title="Is LaserStream compatible with Yellowstone clients?">
  Yes! LaserStream gRPC is designed as a drop-in replacement for Yellowstone gRPC. Simply change your endpoint and API token, and your existing gRPC code will work with LaserStream immediately. LaserStream uses the open-source gRPC protocol.
</Accordion>

<Accordion title="Where do I find LaserStream bandwidth metrics?">
  You can find LaserStream bandwidth metrics on the [LaserStream](https://dashboard.helius.dev/laserstream) page in the Helius Dashboard.
</Accordion>

<Accordion title="Is it possible to get data earlier than the processed commitment level?">
  Yes, decoded shreds are available via [Preprocessed Transactions (Beta)](/shred-delivery/preprocessed-transactions) — part of Helius's Shred Delivery product family. They arrive **\~8 ms faster on average than the `processed` commitment level**, but do not include execution metadata like balance changes, logs, or error information. Available to any **Professional plan or higher** subscriber, metered at **20 credits per 1 MB**.

  For the lowest latency onchain data, use [Raw Shreds (UDP)](/shred-delivery/raw-shreds) to receive unprocessed Solana shreds over UDP (requires custom deshredding logic).

  You can [subscribe to Raw Shreds](https://dashboard.helius.dev/shred-delivery-seats) directly in your Helius Dashboard. To get started, purchase a seat (\$1,000/month/IP or \$800/month/IP on Pro plans) in your dashboard and enter your server's IP address.
</Accordion>

<Accordion title="Can I subscribe to multiple data types in one LaserStream request (e.g., accounts and transactions)?">
  Yes, you can subscribe to multiple data types in a single `SubscribeRequest`. Add separate filter configs (such as `accounts` and `transactions`) to receive both account updates and transaction data in one stream.
</Accordion>

## Order of Messages

<Accordion title="Does LaserStream guarantee the order in which messages are sent?">
  No, LaserStream does not guarantee message ordering. You may receive transactions and account updates out of order, even within the same slot.

  For more information, read our documentation on [LaserStream delivery guarantees](/laserstream/guides/delivery-guarantees).
</Accordion>

<Accordion title="Does LaserStream stream accounts in the order that they're written to?">
  No, LaserStream does not stream accounts in the same order that they’re written to. Account updates may arrive in a different sequence than they were written to the ledger. For more details, read our [LaserStream delivery guarantees](/laserstream/guides/delivery-guarantees).
</Accordion>

<Accordion title="How do I stream LaserStream transactions in order?">
  You can’t stream transactions in order, but you can reconstruct the order on the client. You can do it like this:

  1. Buffer messages on the client side
  2. Extract the `slot` and `index` fields included in each message
  3. Sort the transactions based on these fields

  The `slot` field indicates which slot a transaction belongs to, and the `index` field indicates its position within that slot. By using both, you can reconstruct the order.
</Accordion>

## Troubleshooting LaserStream

<Accordion title="Why is my LaserStream connection experiencing lag or slow performance?">
  • **Client-side bottlenecks**: JavaScript clients can lag when overwhelmed. Narrow your filters or switch to a faster language.

  • **Limited local bandwidth**: Heavy subscriptions can saturate a slow link. Monitor network usage or upgrade your connection.

  • **Geographic distance**: Pick the region-nearest LaserStream endpoint; long routes drop packets and add latency.

  • **Processing logic**: Avoid blocking the main thread; use async queues or workers.

  *Benchmark tip*:

  ```bash theme={"system"}
  cargo install helius-laserstream-bandwidth
  helius-laserstream-bandwidth --laserstream-url $LASERSTREAM_URL --api-key $API_KEY
  ```
</Accordion>

<Accordion title="How do I check my LaserStream connection for errors?">
  Verify your x-token and endpoint, make sure outbound gRPC is allowed. Check your dashboard for connection status and review error logs in your application for authentication or network issues.
</Accordion>

<Accordion title="Why aren't my LaserStream filters working as expected?">
  Confirm public keys and commitment levels, and review your `AND`/`OR` logic. Filters are evaluated as described in the [docs](/laserstream/grpc#subscribe-request).
</Accordion>

<Accordion title="Why does LaserStream send an empty event every 15 seconds?">
  These are ping/heartbeat events that maintain connection health and prevent timeouts. They're part of the gRPC protocol's connection management. You can safely ignore these events or use them to monitor connection status in your application.
</Accordion>

***

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