Tech riderRev. 4 Oct 2026
- 1Runs onAPI, Web
- 2CostsFree plan · paid from $99.95/mo
- 3Load testingYes
- 4Stress testingYes
- 5Distributed loadYes
- 6API testingYes
- 7Deployment modelcloud
- 8Max virtual users100,000 users
8 lines stated Written from the maker's own pages: loader.io
Overview
Loader.io is ranked #12 of 34 in performance testing software on Specifiction. It runs on API, Web. There is a free plan. Paid plans start at $99.95/mo.
Loader.io plans and pricing
All plansFree Free $0.00 / mo 10,000 clients / test · 1 target host · 1 min tests · 2 urls per test loader.io · 4 Oct 2026
Pro $99.95/mo $99.95 / mo 100,000 clients / test · unlimited target hosts · unlimited 10 min tests · 10 urls per test · advanced analytics · concurrent tests · DNS Verification · team features · priority loaders · priority support loader.io · 4 Oct 2026
Compared on performance testing software
Facts
- Purpose
- Loader.io is a cloud-based load testing service for stress testing web apps and APIs with thousands of concurrent connections.loader.io · 4 Oct 2026
- Test workflow
- Users can register a target through the web interface or API, run a test, and monitor it in real time.loader.io · 4 Oct 2026
- Test types
- The API supports per-test, per-second, and maintain-load test types.loader.io · 4 Oct 2026
- Test configuration
- Tests can include a sequence of URLs, a duration, client counts, timeouts, error thresholds, scheduled start times, and completion callbacks.loader.io · 4 Oct 2026
- Results
- The results API provides summaries including successes, errors, timeouts, network errors, data transferred, average response time, and average error rate.loader.io · 4 Oct 2026
- Verification
- Loader.io requires target hosts to pass automated verification before tests, to help prevent using the service to attack sites without their consent.loader.io · 4 Oct 2026
- Host limit
- Each unique hostname must be added and verified independently.loader.io · 4 Oct 2026
- Test location
- The pricing FAQ says tests currently run from Amazon’s US-east datacenter.loader.io · 4 Oct 2026
- Integrations
- The Help Desk lists webhooks, TravisCI, CircleCI, Jenkins, TeamCity, GitHub Service Hooks, New Relic, and HipChat integrations.support.loader.io · 4 Oct 2026
- Webhook automation
- A test-specific run webhook can trigger a test with a POST request, and a notification webhook can receive a POST when a test completes.support.loader.io · 4 Oct 2026
- New Relic
- Loader.io can send test results to New Relic Insights in real time and to New Relic, whose dashboard updates at a stated limit of once per minute.support.loader.io · 4 Oct 2026
- Security
- The maker says load generator IP addresses can change between tests and provides an API endpoint for retrieving the current addresses for allow-listing.loader.io · 4 Oct 2026
- Support
- The pricing FAQ directs users to [email protected] for questions and says paid plans include priority support.loader.io · 4 Oct 2026
Best Loader.io alternatives
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Where it ranks on Specifiction
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Sources
- loader.io· checked 4 Oct 2026
- loader.io/docs/v2/· checked 4 Oct 2026
- loader.io/blog/howto/target-host-verification/· checked 4 Oct 2026
- loader.io/pricing· checked 4 Oct 2026
- support.loader.io/category/12-integrations· checked 4 Oct 2026
- support.loader.io/article/23-webhook· checked 4 Oct 2026
- support.loader.io/article/76-new-relic-insights· checked 4 Oct 2026