Competitive comparison

Benchmark data on a 5-node Raft cluster (c5.xlarge, us-east-1, multi-AZ 1:1:1 topology, memory hot payload backend). Client ran on a dedicated c5.xlarge instance in the same region. S2 numbers are from their published documentation (s2.dev). WarpStream numbers are from their published benchmark (6×m6in.4xl, S3 Standard, OpenMessaging Benchmark framework).

Latency

Metric	Snakream	S2	WarpStream
E2E p99 (same region)	23ms	<50ms	~900ms
E2E p50 (same region)	15ms	—	~500ms
Append p50	13ms	—	~250ms
Append p95	15ms	—	~500ms

Durability

Aspect	Snakream	S2	WarpStream
Write-path storage	Quorum EBS + S3 Standard	S3 Express One Zone	S3 Standard
ACK semantics	Majority fsync before ACK — no data loss window	S3 Express PUT ACK — durable when S3 confirms	Batch flush to S3 — unflushed records in agent memory lost on crash
Replication	3-node synchronous, majority ACK	Quorum over 3 S3 Express One Zone zonal buckets	—
Hot data loss requires	2+ simultaneous EBS failures across AZs before repair	2+ S3 Express One Zone zonal bucket failures (per-zone durability SLA unpublished)	Agent crash before batch flush (default 250ms window)
Storage maturity	EBS gp3 — well-understood failure modes	S3 Express One Zone — no published durability SLA	S3 Standard — 11 nines, proven

Cost (us-east-1, as of 2026-03)

Per-tenant scenario: 1K streams, 1M appends/day (500B avg), 100 GB retained, persistent connections.

Per-tenant cost	Snakream	S2 Express	WarpStream
S3 cold storage (100 GB)	$2.30/mo	— (included)	$2.30/mo
Platform / service fee	$1.10/mo	—	~$3.11/mo (platform + agent compute)
Per-use charges (storage + transfer + ops)	—	$96/mo	—
Per tenant	$3.40/mo	$96/mo	~$5.41/mo

Getting Started

Concepts

Architecture

API

Protocol Specification

Comparisons

Competitive comparison

Latency

Durability

Cost (us-east-1, as of 2026-03)

​Latency

​Durability

​Cost (us-east-1, as of 2026-03)

Latency

Durability

Cost (us-east-1, as of 2026-03)