Understanding Your Petra Credits

Petra Credits power your premium AI features. Here's everything you need to know about how they work, what they're used for, and how to make the most of them.

360
Free tier monthly
6,000
Pro tier monthly
1:1
Credit per second
Features

What Credits Are Used For

Credits power our AI-driven premium features. Regular assessments and grading don't use credits.

Petra Conversations

1 credit per second of real-time conversation with Petra, your AI speaking coach. A typical 90-second practice session uses 90 credits. With Pro's 6,000 monthly credits, that's about 100 minutes of coaching per month.

Perfect with Petra

5 credits per use for advanced GPT-4 analysis of your speaking responses. Get detailed feedback on delivery, language use, and topic development—far more comprehensive than standard grading.

AI Question Generation

1 credit per question for custom TOEFL practice questions. Generate fresh material tailored to specific topics or difficulty levels whenever you need variety in your practice.

What's Always Free

Standard writing, speaking, reading, and listening assessments with AI grading are completely free. Pro members also get unlimited daily submissions across all sections without using any credits.

Credit Breakdown

How Pro Credits Break Down

With 6,000 monthly credits, here's what you can do. Mix and match based on your practice needs.

Usage Example
Credits Used
10 × 90-second Petra conversations
900 credits
20 × Perfect with Petra analyses
100 credits
50 × Custom AI-generated questions
50 credits
Remaining for additional practice
4,950 credits

Focused on Conversations

If you primarily use Petra for speaking practice, 6,000 credits = ~100 minutes of conversation time. That's enough for 3-4 practice sessions per day throughout the month.

Balanced Approach

Mix Petra conversations with Perfect analyses and custom questions. Most Pro users find 6,000 credits provides plenty of flexibility for comprehensive TOEFL preparation.

How It Works

Credit System Details

1

Monthly Refresh

Your credits refresh automatically each billing cycle. Free users receive 360 credits monthly (30 days after signup). Pro members receive 6,000 credits on their billing date.

2

Automatic Deduction

Credits are deducted automatically when you use premium features. Your current balance is always visible in the navigation bar, and detailed transaction history is available on your account page.

3

No Rollover

Unused credits don't carry over to the next month—your balance resets to your tier's allocation. This encourages regular practice, which is key to TOEFL improvement.

4

Full Transparency

Every credit transaction is logged with the date, feature used, and amount deducted. You can review your complete history anytime on your account page.

Common Questions

Frequently Asked Questions

Do credits expire or roll over?
Credits reset to your tier's allocation at the start of each billing cycle and don't roll over. This encourages consistent practice throughout the month.
What happens when I run out of credits?
All standard assessments and AI grading remain available. Premium features like Petra conversations will be unavailable until your credits refresh or you upgrade to Pro.
How do I check my balance?
Your current credit balance is displayed in the navigation bar at all times. For detailed transaction history, visit your account page.
Are regular assessments free?
Yes. Standard writing, speaking, reading, and listening assessments with AI grading don't use credits. Pro members also get unlimited daily submissions.
Can I purchase additional credits?
Credits are currently allocated based on your subscription tier. To get more credits, upgrade to Pro for 6,000 monthly credits.
Is 6,000 credits enough for serious prep?
For most students, yes. That's 100 minutes of Petra conversations per month, or a mix of conversations, Perfect analyses, and custom questions. Combined with unlimited standard practice, it provides comprehensive preparation.

Need more credits? Pro membership includes 6,000 monthly credits plus unlimited assessments.

← Back to Account