Load Impact
Cloud-based load testing platform for websites, apps, and APIs
About Load Impact
Load Impact is a cloud-based load and performance testing service that simulates large-scale traffic against websites, web and mobile apps, and APIs to reveal performance bottlenecks. It can generate load from multiple geographic locations at once, measures response times alongside server resource usage, and supports scripting, scheduling, and automation without requiring any software installation. Load Impact has since rebranded to k6 (now Grafana k6).
Screenshots
Commonly Cited Strengths & Limitations
Strengths
- Open source
- Best developer experience for load testing
- Same script works for local, distributed, and cloud tests
Common Use Cases
- Load testing
- End-to-end web testing
- Synthetic monitoring
- Fault injection testing
- Infrastructure testing
- Regression testing
- Performance regression testing in CI/CD
- SLO and SLA testing for reliability
Details
- Pricing Model
- Freemium
- Starting Price
- $89/mo
- Category
- Productivity & Automation
Key Features
- Script tests in JavaScriptWrite load tests as JavaScript scripts supporting API, threshold config, GraphQL, cookies, WebSocket, and gRPC.
- Local, distributed, and cloud testingUse the same script to run tests on your machine, on Kubernetes, or in the cloud.
- 21 load zonesRun tests from 21 load zones to simulate real global traffic patterns.
- Load testingVerify applications can handle expected traffic with stress, spike, soak, and smoke tests.
- End-to-end web testingMix browser and API testing to interact with real browsers and collect frontend metrics.
- Synthetic monitoringReuse k6 tests with Synthetic Monitoring to continuously verify production environments.
Official Pricing
Load Impact's published plans · verified Aug 28, 2026
Basic
$89/mo
- Up to 500 concurrent users per test
- 15 tests per month
- 3 Service Metric Agents
Standard
$299/mo
- Up to 1,000 concurrent users per test
- Unlimited tests per month
- 4 Service Metric Agents
Advanced
$699/mo
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