What Is Max Concurrency?
Max concurrency is the maximum number of candidates who can begin a test within any rolling 60-second period. This limit applies across all tests on your account, not per individual test.If you have three active tests and a concurrency limit of 1,000, the 1,000 limit is shared across all three tests combined — not 1,000 per test.
Concurrency Limits by Plan
Tests with Proctoring Enabled
| Plan | Max Concurrency |
|---|---|
| Standard | 1,000 candidates/minute |
| Premium | 2,000 candidates/minute |
| Elite | 5,000 candidates/minute |
Tests Without Proctoring
| Plan | Max Concurrency |
|---|---|
| Standard | 50 candidates/minute |
| Premium | 100 candidates/minute |
| Elite | 150 candidates/minute |
Automated Staggering
When demand exceeds your plan’s capacity, AutoProctor automatically staggers candidate entry. Candidates who exceed the limit see a button with a countdown of up to 60 seconds before they can access the test.If your test has a duration configured, AutoProctor automatically adjusts each candidate’s timer to account for staggering delays. No candidate loses test time due to concurrency limits.
SDK Users
If you use AutoProctor’s JavaScript SDK on your own website, you receive a default limit of 5,000 candidates per minute. When this limit is exceeded, the SDK returns a 429 (Too Many Requests) response. You must handle rate-limiting independently in your implementation.Increasing Your Limits
If you need higher concurrency limits, contact the AutoProctor team:| Increase Type | Approximate Cost | Details |
|---|---|---|
| Temporary (one-time event) | $500 per 500 candidates/minute increment | One-time fee |
| Permanent | $2,500/month per 500 candidates/minute increment | Annual commitment required |
The platform supports up to a maximum of 25,000 candidates per minute.
Related Resources
- Timer Settings — Configure test duration and time windows
- Payments and Credits — Plan details and pricing information
- Best Practices for Test Creators — Tips for smooth test administration
- Before You Get Started — Critical requirements for using AutoProctor
- Contact Us — Reach the AutoProctor team for limit increases