Aviationstack is a scalable REST API for real-time flight tracking, historical flight data, airport info, and global aviation data.
from $49.99/mo
About Knapsack Pro
What is Knapsack Pro?
Knapsack Pro is a test parallelisation service that optimizes your CI test suite by splitting tests intelligently across parallel nodes. It creates a queue of test files sorted by execution times and dynamically balances the workload, so each node finishes in roughly the same time—no more slow stragglers. This solves the problem of long CI pipelines that slow down development and deployment cycles.
Who is it for?
It's designed for engineering teams that run tests on CI platforms like GitHub Actions, CircleCI, GitLab CI, or Buildkite, and want to reduce test runtime without manually splitting test files. It's best for teams using Ruby test runners, Cypress, Jest, Vitest, or Playwright. If you have slow test suites that take 20+ minutes, Knapsack Pro can cut that down significantly, as evidenced by users reporting reductions from 1h20 to 20 minutes with five nodes.
Key benefits
Features include Queue Mode, which dynamically balances test distribution; Fallback Mode for network issues; test example splitting; retry-only-failures for reruns; and spot-instance support. It also comes with a test analytics dashboard to visualize bottlenecks. You get a 14-day free trial (no credit card required), and pricing starts at $10 per committer per month, with unlimited plans for qualifying open-source projects.
Key features
- Queue Mode — Dynamically balances test distribution across CI nodes, reducing total runtime.
- Fallback Mode — Automatically splits tests by file name if network issues occur, ensuring reliability.
- Split by Test Examples — Parallelizes tests at the example level, even within slow test files.
- Retry Only Failures — Saves time by rerunning only failed tests on build reruns, plus local CLI retry.
- Spot-Instance Support — Handles spot terminations gracefully, re-running subsets to avoid wasted work.
- Test Analytics — Dashboard with graphs and stats on wall-times, bottlenecks, and time spans.
- Secure & Private — Does not access your source code; collects minimal data with opt-in encryption.
SaaSpartout Score
7.6
/10
Editorial score from our review methodology — not user ratings.
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Knapsack Pro Pricing
Knapsack Pro pricing: from $10/committer/mo.
For comparison: the median starting price in Developer Tools is $19.99/month, measured across 301 tools we track. See the full SaaS Pricing Index →
Pro Plan
Price: $10 per committer per month. Includes all features, standard support, and a 14-day API usage trial (no credit card required). Committers are distinct users who trigger CI builds; no other usage limits.
Enterprise Plan
Price: Quote on request. Includes all features, priority support, SAML-based SSO, annual invoicing, multiple accounts, and optional vendor onboarding assistance.
Open Source Plan
Free for non-commercial open source projects that meet criteria: OSI-approved license, non-commercial entity, and adding the Knapsack Pro badge to the project README.
All plans include a 14-day free trial (no credit card required).
Frequently asked questions
Is Knapsack Pro free?
Knapsack Pro offers a 14-day free trial (no credit card required) and a free plan for qualifying non-commercial open source projects. For commercial use, pricing starts at $10 per committer per month.
How much does Knapsack Pro cost?
Knapsack Pro's Pro plan costs $10 per committer per month. Enterprise plan is quote-based. Committers are distinct users who trigger CI builds during the month.
Who is Knapsack Pro best for?
It’s best for engineering teams using CI/CD platforms (GitHub Actions, CircleCI, GitLab CI, Buildkite) who want to speed up their test suite, especially with slow or flaky tests. It supports Ruby, Cypress, Jest, Vitest, Playwright, and any language via SDK/API.
What are the top alternatives to Knapsack Pro?
Common alternatives include CircleCI test splitting, GitHub Actions matrix builds, and other CI parallelisation tools like Buildkite's test splitting. However, Knapsack Pro offers advanced queue-based dynamic splitting and fallback modes that distinguish it.
What is a key limitation of Knapsack Pro?
If some CI nodes fall back to Fallback Mode due to network issues while others don't, tests might run on multiple nodes, potentially causing duplicate runs. Also, pricing is based on the number of committers, which may be unclear for large teams.
