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Upstash QStash

API—OSS—FREE—DOCS3/5
UQ5.2#16 of 38
outWeb—Windows—Mac—Linux—Android—iOS

Ranked in Message Broker Software ·Free plan· paid from $1/mo

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About

Upstash QStash is ranked #16 of 38 in message broker software on Inferse. It runs on API, Web. There is a free plan. Paid plans start at $1/mo.

Compared on message broker software

Free plan
Yesupstash.com
Deployment model
cloudupstash.com
Delivery guarantees
at_least_onceupstash.com
Dead-letter queues
Yesupstash.com
Ordering guarantees
per_queueupstash.com
Maximum message size
10 MBupstash.com
Supported protocols
HTTPupstash.com

Facts

What it does
QStash is a serverless messaging and scheduling solution that acts as a middleman between an application and an API to provide delivery guarantees and automatic retries.upstash.com · 5 Oct 2026
Scheduling
QStash can schedule messages for future delivery, with the maximum delay depending on the plan.upstash.com · 5 Oct 2026
Fan-out
URL Groups let QStash publish messages to multiple endpoints in parallel.upstash.com · 5 Oct 2026
FIFO queues
Queues can deliver enqueued messages one by one in the order they were enqueued.upstash.com · 5 Oct 2026
Flow control
Flow Control sets rate and parallelism limits for endpoint delivery, with excess messages added to a waitlist.upstash.com · 5 Oct 2026
Failed messages
QStash supports retrying failed jobs and using a dead letter queue to manage failed messages.upstash.com · 5 Oct 2026
Deduplication
QStash supports deduplication to prevent duplicate messages from being delivered.upstash.com · 5 Oct 2026
LLM integrations
QStash documents integrations for OpenAI-compatible providers and Anthropic, including batching chat completion requests and delivering results to a callback.upstash.com · 5 Oct 2026
Payload limit
The Getting Started page states a default message size limit of 1 MB, which can be customized at the customer's request.upstash.com · 5 Oct 2026
Request security
QStash sends an HMAC-SHA256 signed JWT in the Upstash-Signature header, which customers can verify to check request authenticity.upstash.com · 5 Oct 2026
Prod Pack SLA
Prod Pack accounts include an SLA guaranteeing 99.99% uptime.upstash.com · 5 Oct 2026
Regions
QStash is available in EU and US regions, which have independent infrastructure, pricing, resources, logs, and messages.upstash.com · 5 Oct 2026
Support
Upstash says customers on any subscription plan can contact its team at [email protected] for technical support, questions, and feedback.upstash.com · 5 Oct 2026

Company

Headquarters
California, United Statesupstash.com · 28 Sept 2026

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Where it ranks on Inferse

Sources