Sidekiq Review: Pricing for Pro and Enterprise Explained

When a user clicks a button, the app should answer at once. Sending the email, resizing the image or charging the card can happen a moment later, in the background. Sidekiq is the tool most Ruby teams use for that. This review covers what it does and what the paid versions cost.

What is Sidekiq?

Sidekiq describes itself as "simple, efficient background jobs for Ruby". Your app puts a job on a queue, and Sidekiq worker threads pick it up and run it. Its home page calls it "Ruby's fastest job system, up to 20x faster than the competition" and says it is trusted and used by thousands of organizations.

How a Sidekiq job runs

1. PushYour app creates a job, such as sending a welcome email.
2. QueueThe job waits in Redis.
3. RunA Sidekiq worker thread picks it up and does the work.
4. MonitorThe built-in Web UI lets you watch the system.

The free version already includes scheduled jobs, error handling, a Web UI, a Ruby API, middleware and support for long-running jobs.

Who built Sidekiq?

Sidekiq's About page says it is "an open source project started by @mperham in 2012". That is Mike Perham, who still sells and supports it through Contributed Systems LLC, based in Portland, Oregon. The Pro page promises "priority support from the author of Sidekiq".

The gem's page on RubyGems.org showed 340,894,465 total downloads on 14 October 2026.

What does Sidekiq cost?

Sidekiq comes in three versions. These were the prices on sidekiq.org on 14 October 2026.

Pro comes with unlimited usage and adds batches, enhanced reliability, expiring jobs and worker metrics. Enterprise adds rate limiting, cron jobs, unique jobs, rolling restarts and encryption.

Sidekiq versions (sidekiq.org, 14 October 2026)

SidekiqFreeopen sourceScheduled jobs, error handling and the Web UI.

Pro$99a monthOr $995 a year. Adds batches and enhanced reliability.

Enterprise$269a month and upPer 100 threads. Adds rate limiting, cron jobs and encryption.

Sidekiq Pro's main promise is reliability. Its page explains that in the free version a job is lost if the process crashes while running it, and that Pro keeps the job so it is not lost. Pro also adds batches, which group jobs and report on them as one unit.

Sidekiq Enterprise is licensed in packs of 100 threads, and the price per pack falls as you buy more:

Sidekiq Enterprise, price per pack of 100 threads

1 pack$269 a month

2 to 3 packs$249 a month

4 to 7 packs$229 a month

8 to 12 packs$209 a month

13 or more packs$189 a month

All sales come with a two-week, 100% money-back guarantee.

What are the alternatives to Sidekiq?

1. Resque: The older option for Ruby background jobs. It forks a process for each job, where Sidekiq uses threads.
2. Solid Queue: A newer option that stores jobs in the database, so it needs no Redis.
3. Delayed Job: An older database-backed queue.

Is Sidekiq worth paying for?

The free version is enough for most small and medium apps. Pay $99 a month for Pro when a lost job means a lost order or an unsent invoice, or when you need batches. Move to Enterprise when you need rate limiting, cron jobs or encrypted job data.

Sources, all read on 14 October 2026: Sidekiq's home page, About page, Pro page and Enterprise page, the Enterprise purchase page, and the sidekiq gem on RubyGems.org.

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