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

# 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EBS failures across AZs** before repair | 2+ S3 Express One Zone zonal bucket failures (per-zone durability SLA unpublished) | Agent crash before batch flush (default 250ms window)               |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**                        |