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WarpStream

iScore55–78 · of 4
www.warpstream.com · Event streaming
SEPT 2026 audit

A Kafka-compatible service that writes straight to object storage, billed on a single meter — the gigabytes you write — with no inter-zone replication to pay for.

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Entry paid plan$100 a month for the Dev tier, which carries NO uptime SLA, before any per-gibibyte write charge. The first tier with an SLA is Fundamentals at $500.
CategoryEvent streaming

Updated 9 criteria comparedSources last checked

01.Evaluation guide

Who it suits

Write-heavy workloads where inter-zone replication is the bill. Data is acknowledged straight into your own object storage, so partitions, reads and storage are not metered at all and only gigabytes written are — $0.01 falling to $0.003 at volume.

Consider something else if…

You need an availability commitment at the entry price. The $100 Dev tier carries no uptime SLA whatsoever; the first one is Fundamentals at $500, five times the floor. Lower latency is a Pro-tier feature, which is the honest cost of the object-storage design.

Editorial · Palash Bagchi · approved

Each value below links to the page it was read from, with the sentence it came from. Criteria WarpStream does not publish are not listed.

WarpStream pricing

4 criteria
Kind of free offerFree credit
Sources (1) →
  • WarpStream Pricing ↗

    “get started free with $400 in non-expiring credits, no credit card required.”

    Read 2026-09-16 · official pricing

Credit card to startNo
Sources (1) →
  • WarpStream Pricing ↗

    “get started free with $400 in non-expiring credits, no credit card required.”

    Read 2026-09-16 · official pricing

Entry paid plan$100 a month for the Dev tier, which carries NO uptime SLA, before any per-gibibyte write charge. The first tier with an SLA is Fundamentals at $500.
Sources (1) →
  • WarpStream Pricing ↗

    “uptime sla none 99.9% 99.99% 99.999%* cluster pricing $100/m $500/m $1500/m contact”

    Read 2026-09-16 · official pricing

Pricing modelTwo lines, not one. A cluster-tier fee — $100 a month for Dev, $500 for Fundamentals, $1,500 for Pro — plus write throughput metered per gibibyte: $0.01/GiB to 50 TiB, falling to $0.003 beyond 6,250 TiB. Reads, partitions and storage are not billed; data sits in your own object storage.
Sources (1) →
  • WarpStream Pricing ↗

    “uptime sla none 99.9% 99.99% 99.999%* cluster pricing $100/m $500/m $1500/m contact [...] write throughput tiers 50 TiB $0.01/GiB 250 TiB $0.0075/GiB 1250 TiB $0.0055/GiB 6250 TiB $0.004/GiB remainder $0.003/GiB”

    Read 2026-09-16 · official pricing

Infrastructure

1 criteria
Uptime SLANone at all on the $100 Dev tier. 99.9% on Fundamentals, 99.99% on Pro, and 99.999% on Enterprise only with multi-region clusters — 99.99% without.
Sources (1) →
  • WarpStream Pricing ↗

    “uptime sla none 99.9% 99.99% 99.999%* cluster pricing $100/m $500/m $1500/m contact [...] * 99.999% uptime sla for enterprise requires multi-region clusters (99.99% without).”

    Read 2026-09-16 · official pricing

Storage

1 criteria
Storage priceNot charged separately. Data is persisted directly to your own object storage, so durability is the object store's bill rather than WarpStream's.
Sources (1) →
  • WarpStream Pricing ↗

    “data is durably persisted to object storage before warpstream provides an acknowledgement to the producer. once data is written to object storage, replication is handled by the object store.”

    Read 2026-09-16 · official pricing

Queues

1 criteria
Message retention7 days on the configuration the pricing calculator shows.
Sources (1) →

Streaming

2 criteria
Throughput ceilingThe calculator runs from 1 MiB/s to 5 GiB/s of uncompressed write throughput, and the rate falls as the tier rises rather than the ceiling being fixed.
Sources (1) →
  • WarpStream Pricing ↗

    “write throughput (uncompressed) 1 MiB/s 10 MiB/s 100 MiB/s 500 MiB/s 1 GiB/s 5 GiB/s”

    Read 2026-09-16 · official pricing

Partition limit4,096 on Dev, 16,384 on Fundamentals, 50,000 on Pro and 200,000+ on Enterprise. Partitions are capped by tier and not billed.
Sources (1) →
  • WarpStream Pricing ↗

    “maximum partitions 4,096 16,384 50,000 200,000+”

    Read 2026-09-16 · official pricing

When these numbers change, hear about it. Sources are re-checked monthly; a repricing goes out as a short note.

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Every page here is sourced and dated.