// Provider Comparison

Subglow vs Helius: which Solana gRPC provider
should you choose?

Both Subglow and Helius stream real-time Solana data for trading bots and data pipelines. But they take fundamentally different approaches to protocol design, data delivery, pricing, and portability. This comparison breaks down every technical and commercial difference so you can make an informed decision.

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Quick comparison

Side-by-side overview of Helius and Subglow as of April 2026. Pricing reflects publicly available starting tiers for plans that include gRPC or equivalent streaming access.

Feature	Helius	Subglow
Protocol	Laserstream (proprietary)	Yellowstone (Dragon’s Mouth)
Yellowstone compatible	No — requires Helius SDK	Yes — standard client libraries
Pre-parsed JSON	No — custom binary payload	Yes — structured, trade-ready JSON
Billing model	Credit-based metering	Flat monthly pricing, no credits
Starting price (gRPC tier)	~$499/mo	$99/mo
Vendor lock-in	High — proprietary protocol + SDK	None — standard Yellowstone API
Delivery speed	Fast (proprietary pipeline)	Fast (pre-filtered + pre-parsed)
Borsh parsing required	Handled by Helius SDK internally	No — server-side, delivered as JSON
Client code portability	Helius-only	Any Yellowstone provider
Server-side filtering	Advanced (Laserstream filters)	Program-level (Pump.fun, Raydium, Jupiter, custom)

Protocol & compatibility

The most consequential difference between Subglow and Helius is the underlying streaming protocol. Subglow uses Yellowstone gRPC (Dragon's Mouth), the open-source standard maintained by Triton One under the rpcpool/yellowstone-grpc repository. Yellowstone is the de facto protocol for real-time Solana data streaming. It hooks into the validator through the Geyser interface and exposes transactions, account updates, slots, blocks, and entries over persistent gRPC connections using Protocol Buffers.

Helius takes a different approach. Instead of running the standard Yellowstone plugin, Helius built Laserstream — a proprietary streaming protocol with its own SDK, its own wire format, and its own subscription API. Laserstream is not Yellowstone-compatible. You cannot connect to it using the standard @triton-one/yellowstone-grpc library for Node.js, the yellowstone-grpc-client crate for Rust, or any other Yellowstone client. You must use the Helius SDK.

This distinction matters for two practical reasons: code portability and vendor lock-in.

With Yellowstone, your client code is portable. If you write a trading bot that connects to Subglow using the standard Yellowstone client, you can point that same code at QuickNode, Chainstack, Solana Tracker, or any other Yellowstone-compatible provider by changing only the endpoint URL and API key. Your subscribe filters, connection logic, and data handling all remain identical. This gives you leverage — you're never locked into a single vendor, and you can switch providers in minutes if pricing changes or uptime drops.

With Laserstream, your client code is Helius-specific. The subscription API, the data format, and the SDK are all proprietary. If you later decide to switch away from Helius — whether for pricing reasons, latency improvements, or feature gaps — you need to rewrite your streaming client from scratch against the Yellowstone API (or another provider's custom protocol). For small projects this might take an afternoon. For production trading systems with complex reconnection logic, backpressure handling, and error recovery, it can take days or weeks of engineering work plus a full testing cycle.

Subglow is Yellowstone (Dragon's Mouth) compatible by design. We made a deliberate architectural decision to build on the open standard rather than create a proprietary protocol. The filtering and pre-parsing features that differentiate Subglow are implemented server-side, upstream of the Yellowstone protocol layer. From your client's perspective, Subglow looks and behaves like any other Yellowstone endpoint — except the data that arrives is already filtered to your programs and pre-parsed into structured JSON.

Execution latency: the parsing bottleneck

When people compare gRPC providers, they typically focus on wire latency— how fast data travels from the provider's infrastructure to your server. Both Helius and Subglow deliver data quickly on the wire. But wire latency is only half the story. The metric that actually determines your bot's competitive edge is execution latency: the total time from slot confirmation to your bot's first actionable decision.

Execution latency = wire latency + parse time + decision logic.

Standard Yellowstone gRPC providers (QuickNode, Chainstack, Solana Tracker) send raw protobuf messages with Borsh-encoded instruction data. When your bot receives one of these messages, it must:

Deserialize the protobuf envelope — decode the gRPC message into its component fields (signature, accounts, instructions, meta).
Identify the program — inspect the instruction's program_id to determine which DeFi protocol processed the transaction (Pump.fun, Raydium, Jupiter, etc.).
Decode the Borsh payload — deserialize the instruction data using the correct IDL schema. Each program has its own Borsh layout, discriminators, and nested structs. Getting this wrong produces garbage data or crashes.
Resolve account indices — map the instruction's account index array to actual public keys using the transaction's account keys list and lookup tables.
Convert values — transform lamports to SOL, raw token amounts to decimals, and timestamps to human-readable formats.

This parsing pipeline adds 15–30ms per transaction on a typical setup. That might sound small, but in the context of Solana trading bots — where Alpenglow finality targets 150ms and profitable windows can close in under 100ms — spending 20ms on parsing alone is a significant competitive disadvantage.

Helius partially addresses this through Laserstream. The Helius SDK handles some parsing internally, so you don't need to manually decode Borsh for supported programs. However, the data still arrives as a proprietary binary payload that the Helius SDK must process on your machine. The parsing happens client-side within the SDK, which means your CPU still bears the cost of deserialization. The latency improvement over raw Yellowstone depends on the efficiency of the Helius SDK in your language of choice and the complexity of the transactions.

Subglow takes a fundamentally different approach. All Borsh decoding, protobuf deserialization, account resolution, and value conversion happens server-side, inside Subglow's infrastructure, before the data reaches your bot. Subglow delivers pre-parsed JSON — structured objects with human-readable field names, native token amounts, resolved wallet addresses, and typed event categories (buy, sell, swap, addLiquidity, etc.).

The result is 0ms of parse overhead on your end. Your bot receives a JSON object it can immediately feed into its decision logic. No protobuf library, no Borsh IDL, no account resolution, no lamport conversion. This eliminates the 15–30ms parsing bottleneck and gives Subglow a measurable execution latency advantage for any use case where speed matters.

Raw Yellowstone Provider

15–30ms

Client-side Borsh + protobuf parsing

Helius Laserstream

5–15ms

Client-side SDK deserialization

Subglow

0ms

Pre-parsed JSON — zero client-side parsing

Pricing & billing model

Pricing is one of the starkest differences between Subglow and Helius, and it goes beyond the headline number. The fundamental models are different.

Helius: credit-based billing

Helius uses a credit system across all their plans. Each API call, webhook delivery, and streaming message consumes credits from your monthly allocation. When you exceed your credit allotment, you either hit rate limits, get throttled, or pay overage fees — depending on your plan level and configuration.

For gRPC-tier streaming (which includes Laserstream access), Helius plans start at approximately $499/mo. The exact credit allocation varies by plan, but the core model remains the same: usage is metered, and cost scales with volume. During high-activity market periods — exactly when your trading bot is most active and most profitable — your credit consumption spikes. This creates an inherent tension: the more you trade, the more you pay, and the less predictable your infrastructure costs become.

For teams running multiple bots across multiple programs, credit-based billing can make budgeting difficult. A sudden NFT mint, a memecoin frenzy on Pump.fun, or a liquidity event on Raydium can blow through your monthly credits in hours. You either provision for peak usage (and overpay during quiet periods) or provision for average usage (and risk throttling during the moments that matter most).

Subglow: flat monthly pricing, no credit metering

Subglow uses a flat monthly rate with no credit metering. You pick a plan, you pay one price, and you stream as much as you need within the plan's capabilities. There are no per-message credits, no overage charges, and no throttling based on consumption volume.

Sniper

$99/mo

Pump.fun + Raydium + Jupiter. Pre-parsed JSON. Standard delivery. No credit metering.

Pro

$249/mo

Everything in Sniper + zero rate limits + full-speed delivery + custom Program IDs. No credit metering.

Dedicated

Custom

Private endpoint. Colocated infrastructure. 99.9% SLA. Custom flat rate — still no credits.

The pricing difference is significant. Subglow starts at $99/mo while Helius gRPC-tier plans start at approximately $499/mo. That's an 80% cost reduction at the entry level. Even Subglow's Pro plan at $249/mo — which includes zero rate limits, custom program filters, and full-speed delivery — is half the cost of Helius's gRPC starting tier.

More importantly, Subglow's flat pricing model means your costs stay the same whether you process 1 million transactions per day or 50 million. There are no surprises on your invoice. For trading teams that need to forecast infrastructure costs accurately, this predictability is a meaningful operational advantage.

When Helius is the better choice

This is a comparison page, not a sales page. Helius is a strong platform with legitimate advantages depending on your use case. Here's when Helius makes more sense than Subglow.

You need a full-service Solana platform

Helius offers standard RPC endpoints, Enhanced Transaction APIs, the DAS (Digital Asset Standard) API for querying NFTs and compressed NFTs, webhooks for push-based notifications, and Laserstream for real-time data — all under one subscription. If you need RPC + streaming + webhooks + DAS in a single provider, Helius provides that consolidated platform. Subglow is focused exclusively on gRPC streaming.

You're building an NFT application

Helius's DAS API is the industry standard for querying Solana NFTs, including compressed NFTs (cNFTs) on Metaplex Bubblegum. If your product involves NFT metadata, ownership lookups, collection queries, or compressed NFT trees, Helius has purpose-built APIs that Subglow does not replicate. Subglow is designed for DeFi token streaming, not NFT indexing.

You need webhooks alongside streaming

Helius offers a robust webhook system that pushes transaction notifications to your HTTP endpoint based on configurable filters. This is useful for backend applications that don't maintain persistent connections — payment confirmations, wallet activity alerts, or cross-service event triggers. Subglow currently provides gRPC streaming only and does not offer webhook delivery.

You want one vendor for everything

Some teams prefer the simplicity of a single vendor relationship — one dashboard, one billing account, one support channel for all Solana infrastructure. Helius serves that consolidation use case well. If managing multiple provider relationships is overhead you want to avoid, Helius as a full-stack platform reduces that complexity.

In short: Helius is a general-purpose Solana infrastructure platform that happens to include streaming. Subglow is a purpose-built gRPC streaming provider optimized for trading bots and real-time data consumers. If your primary need is a fast, filtered, pre-parsed gRPC stream for trading with low execution latency and predictable pricing, Subglow is the more focused tool for that job.

When Subglow is the better choice

Subglow is built for a specific class of Solana users: teams and individuals who consume real-time on-chain data through gRPC streaming and need the lowest possible execution latency with the least engineering overhead. Here's where Subglow has a clear advantage.

Trading bots that compete on speed

If you run a sniping bot, copy-trading bot, or arbitrage system on Solana, execution latency is the metric that determines profitability. Every millisecond between slot confirmation and your submitted transaction affects whether you land a trade or miss it. Subglow's pre-parsed JSON eliminates 15–30ms of Borsh parsing overhead, which directly translates to faster decision loops. The server-side filtering ensures you only receive transactions from the programs you trade on — no wasted CPU cycles discarding irrelevant data.

Teams that want code portability

Building on Yellowstone means your client code works with any Yellowstone-compatible provider. If Subglow ever raised prices, degraded service, or lacked a feature you needed, you could switch to QuickNode, Chainstack, or Solana Tracker by changing two lines of configuration. With Helius Laserstream, switching away means a full client rewrite. Yellowstone compatibility is insurance against vendor lock-in.

Cost-conscious operations

At $99/mo with flat pricing and no credit metering, Subglow is the most affordable entry point for gRPC streaming on Solana. This matters for solo developers, small trading teams, and projects that are still validating a strategy before scaling up. Even at the Pro tier ($249/mo), Subglow costs half of Helius's gRPC starting price — and you get unlimited streaming without worrying about credit consumption during market spikes.

Teams that don't want to maintain a parsing pipeline

Maintaining Borsh IDLs, handling program upgrades that change instruction layouts, debugging deserialization failures, and keeping decoder logic in sync with multiple DeFi protocols is a significant engineering burden. Subglow handles all of this server-side. When Pump.fun or Raydium updates their instruction format, Subglow updates the parser — your bot code doesn't change. This reduces maintenance overhead and lets you focus on trading logic rather than data plumbing.

Migration: switching between providers

Migration paths differ dramatically depending on which direction you're moving and which protocol you're currently on.

From Helius Laserstream → Subglow

If you're currently using Helius Laserstream and want to switch to Subglow, you will need to rewrite your streaming client code against the Yellowstone gRPC API. Laserstream's subscription model, data format, and SDK are proprietary and have no direct mapping to Yellowstone's subscribe API.

The good news: the Yellowstone subscribe API is well-documented and straightforward. Triton One maintains official client libraries for Node.js, Rust, Go, and Python. Most teams that have migrated from Laserstream to Yellowstone report the core streaming client taking a few hours to reimplement, with another day or two for reconnection logic, error handling, and testing.

Your trading logic, execution pipeline, wallet management, and downstream integrations stay exactly the same. The migration scope is limited to the streaming client layer. And once you're on Yellowstone, you gain code portability across all Yellowstone providers — not just Subglow.

From any Yellowstone provider → Subglow

If you're already using a Yellowstone-compatible provider (QuickNode, Chainstack, Solana Tracker, or running your own Yellowstone node), switching to Subglow is trivial. Because Subglow uses the same Yellowstone protocol, you just change the endpoint URL and API key.

migrate.js

// Before (any Yellowstone provider)

const ENDPOINT = "https://grpc.other-provider.io";

const API_KEY = "old-provider-key";

// After (Subglow)

const ENDPOINT = "https://grpc.subglow.io";

const API_KEY = "your-subglow-key";

// Everything else stays the same — same client, same filters, same logic

const Client = require("@triton-one/yellowstone-grpc");

const client = new Client( ENDPOINT, undefined, { "x-api-key": API_KEY });

const stream = await client.subscribe();

stream.write({ transactions: {...}, commitment: 1 });

Same client library. Same subscription API. Same filter syntax. The only change is the endpoint and key.

No client library changes. No subscription API changes. No filter syntax changes. Your reconnection logic, error handling, and backpressure management all remain identical. The bonus: you immediately start receiving pre-parsed JSON instead of raw protobuf, so you can simplify or remove your parsing pipeline downstream.

From Subglow → Helius Laserstream

If you decide to move from Subglow to Helius, you'll need to rewrite your client against the Laserstream SDK. This is the same scope of work as migrating from any Yellowstone provider to a proprietary protocol. You'll also need to build (or rebuild) a client-side parsing pipeline if your downstream code expects the structured JSON format that Subglow provides, since Laserstream delivers data in its own proprietary format.

From Subglow → any other Yellowstone provider

If you want to switch from Subglow to another Yellowstone-compatible provider, it's the same two-line change: swap the endpoint URL and API key. However, you will need to add a parsing pipeline to handle the raw protobuf data that other Yellowstone providers deliver, since you won't have Subglow's pre-parsed JSON anymore. This is the standard Yellowstone output format — you'll need Borsh IDLs, instruction decoders, and account resolution logic.

Technical deep dive: what happens under the hood

To understand why these differences matter in practice, it helps to look at what each provider is actually doing when a new transaction hits the Solana validator.

The standard Yellowstone pipeline

When a validator processes a new slot, the Geyser plugin captures every transaction, account update, and block notification. The Yellowstone plugin serializes this data into Protocol Buffer messages and makes it available over a gRPC stream. Clients subscribe with filters (transaction filters, account filters, slot filters) and receive a continuous stream of matching protobuf messages.

With a standard Yellowstone provider like QuickNode or Chainstack, what you receive is the raw Geyser output: a protobuf-encoded SubscribeUpdate message containing the full transaction with all instructions, inner instructions, account keys, and Borsh-encoded data blobs. Useful, but requires substantial client-side processing.

The Helius Laserstream pipeline

Helius runs their own data pipeline that consumes validator output and transforms it into Laserstream's proprietary format. Laserstream is built for performance — it uses an optimized binary encoding and its own subscription protocol. The Helius SDK on your machine then decodes this binary payload into usable data structures.

The advantage is that Helius controls the entire pipeline end to end, which lets them optimize encoding and delivery. The trade-off is the proprietary nature of every layer: protocol, wire format, SDK, and subscription API. If Helius makes a breaking change to Laserstream, you must update the Helius SDK. If the SDK has a bug in your language, you wait for Helius to fix it. You can't substitute an alternative client library.

The Subglow pipeline

Subglow also runs its own data pipeline on top of the Geyser interface, but with a critical architectural decision: the output is served over the standard Yellowstone gRPC protocol. Subglow's infrastructure performs three transformations before data reaches the Yellowstone layer:

Server-side filtering — only transactions matching your configured programs pass through. Everything else is dropped before serialization, eliminating wasted bandwidth and client-side CPU.
Borsh decoding and instruction parsing — instruction data is deserialized using the correct IDL for each supported program. Discriminators are mapped, account indices are resolved, and nested structs are flattened into readable fields.
JSON structuring — the parsed data is serialized into a clean JSON payload with typed event names (buy, sell, swap, addLiquidity), human-readable field names, native token amounts (SOL instead of lamports), and resolved wallet addresses.

This processed data is then served over the standard Yellowstone gRPC protocol. Your client connects with @triton-one/yellowstone-grpc or yellowstone-grpc-client and receives SubscribeUpdate messages like any other Yellowstone endpoint — except the data payload inside those messages is pre-parsed JSON instead of raw protobuf with Borsh blobs.

This architecture gives Subglow the best of both worlds: the performance and data quality advantages of a custom pipeline, combined with the portability and ecosystem compatibility of the standard Yellowstone protocol.

Real-world scenario: Pump.fun sniping bot

To make these differences concrete, let's walk through what happens when a new token launches on Pump.fun and you want your bot to buy within the first few slots.

With Helius Laserstream

The Pump.fun create transaction confirms on the validator.
Helius's pipeline captures it and encodes it into the Laserstream binary format.
The Laserstream message arrives at your server (fast wire delivery).
The Helius SDK on your machine decodes the binary payload (5–15ms depending on SDK version and language).
Your bot inspects the decoded data, identifies it as a Pump.fun create event, extracts the bonding curve address and token mint.
Your bot submits a buy transaction.

With Subglow

The Pump.fun create transaction confirms on the validator.
Subglow's pipeline captures it, decodes the Borsh instruction, resolves accounts, and structures a JSON event with the token mint, bonding curve address, creator wallet, and initial SOL amount.
The pre-parsed JSON arrives at your server over the Yellowstone gRPC stream.
Your bot reads the JSON directly — no deserialization step. It immediately identifies the create event and extracts the bonding curve address.
Your bot submits a buy transaction.

The difference is steps 4 and 5 in the Helius flow vs step 4 in the Subglow flow. Subglow collapses the deserialization and extraction into a single JSON property access. In a market where profitable Pump.fun entries can close within 2–3 slots (roughly 800–1200ms after launch), saving 10–20ms on parsing is the difference between landing in the first slot of buyers and landing in the third.

And because Subglow uses Yellowstone, if you ever need to run the same bot against a raw Yellowstone feed (for backtesting, redundancy, or multi-provider setups), your connection code works unchanged. You'd only need to add a parsing layer for the raw protobuf. With Helius Laserstream, running a redundant stream through a non-Helius provider means maintaining two completely different client implementations.

Full feature comparison

A detailed breakdown of capabilities across both platforms. This covers areas beyond streaming to give a complete picture.

Capability	Helius	Subglow
Real-time streaming	Yes (Laserstream)	Yes (Yellowstone gRPC)
Standard RPC endpoints	Yes	No (streaming-only)
DAS API (NFTs / cNFTs)	Yes	No
Enhanced Transaction API	Yes	No
Webhooks	Yes	No
Pre-parsed JSON delivery	No	Yes
Server-side program filtering	Yes (Laserstream filters)	Yes (Pump.fun, Raydium, Jupiter, custom)
Yellowstone (Dragon’s Mouth) compatible	No	Yes
Client library portability	Helius SDK only	Any Yellowstone client
Borsh parsing required by client	SDK handles internally	No — server-side
Billing model	Credit-based metering	Flat monthly, no credits
gRPC starting price	~$499/mo	$99/mo
Free trial	Limited credits	Yes (100 req/day)
Custom Program ID filters	Via Laserstream config	Pro + Dedicated tiers
Multi-region availability	US, EU	US, EU, Asia, US West
Dedicated infrastructure option	Enterprise tier	Dedicated tier (colocated)
Alpenglow finality optimization	Not announced	Prepared

Frequently asked questions

Is Helius Laserstream compatible with Yellowstone gRPC clients?

No. Helius Laserstream is a proprietary streaming protocol that requires the Helius-specific SDK. You cannot connect to it using standard Yellowstone gRPC client libraries like @triton-one/yellowstone-grpc (Node.js) or yellowstone-grpc-client (Rust). If you build on Laserstream, your client code is tied to Helius. Subglow uses the standard Yellowstone (Dragon’s Mouth) protocol, so any Yellowstone-compatible client works out of the box.

What does “pre-parsed JSON” mean and why does it matter for execution latency?

Standard Yellowstone gRPC providers deliver raw protobuf messages with Borsh-encoded instruction data. Your client must deserialize the protobuf, decode the Borsh payload, map instruction discriminators, resolve account indices, and convert lamport values — a process that adds 15–30ms of execution latency per message. Subglow performs all of this server-side and delivers structured JSON with human-readable field names, native token amounts, and resolved wallet addresses. Your bot receives trade-ready data with 0ms parse overhead, which directly reduces execution latency.

How much cheaper is Subglow compared to Helius for gRPC streaming?

Subglow’s Sniper plan starts at $99/mo with flat monthly pricing and no credit metering. Helius’s gRPC-tier plans (which include Laserstream access) start at approximately $499/mo and use credit-based billing that scales with usage. For teams running high-throughput trading bots, Subglow’s flat rate means predictable costs regardless of volume, while Helius credits can lead to unpredictable bills during market spikes.

Can I migrate from Helius Laserstream to Subglow without rewriting my bot?

Partially. Because Laserstream uses a proprietary protocol, the streaming client code must be rewritten against the Yellowstone gRPC API. However, the Yellowstone subscribe API is straightforward and well-documented — most teams complete the migration in a few hours. Your trading logic, execution pipeline, and downstream integrations remain unchanged. If you’re already using any Yellowstone-compatible provider (QuickNode, Chainstack, Solana Tracker), switching to Subglow requires only changing the endpoint URL and API key.

When should I choose Helius over Subglow?

Helius is a better fit if you need a full-service Solana platform that includes standard RPC, the DAS (Digital Asset Standard) API for NFTs and compressed NFTs, webhooks, enhanced transaction APIs, and streaming in a single subscription. Helius offers a broader feature surface beyond gRPC. If your primary need is purpose-built gRPC streaming for trading bots with low execution latency, pre-parsed data, and predictable pricing, Subglow is the more focused and cost-effective choice.

Does Subglow support the same programs and filters as Helius?

Subglow provides server-side program-level filtering for popular DeFi programs including Pump.fun, Raydium, and Jupiter, with pre-parsed output for each. Custom Program ID filters are available on the Pro and Dedicated tiers. Helius Laserstream supports its own set of filters through the Helius SDK. Both platforms cover the major Solana DeFi programs, but they differ in how data is delivered: Helius sends proprietary binary payloads, while Subglow sends structured JSON over the standard Yellowstone protocol.

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Subglow vs Helius: which Solana gRPC providershould you choose?