Free
For a quick test drive.
$0/mo
- 7 Permanent Credits (7 conversations)
- Basic Mode
- No Guided Mode
- Image Upload (up to 6 images)
Choose Your Professional Plan
Save 40% 🔥
Pro
Study as much as you want.
$11.9/mo
$19.9Save $96 / year
- 1,500 Credits / mo (1,500 conversations)
- Guided Mode
- Visual Explanations ⚡️
- Priority Reply (Top Priority)
- Access to advanced AI models
- Early Access
- Feedback Priority
Standard
Enough for regular homework.
$5.9/mo
$9.9Save $48 / year
- 500 Credits / mo (500 conversations)
- Guided Mode
- Visual Explanations ⚡️
- Priority Reply
- Access to advanced AI models
Permanent credit packs
One-time
Standard One-Time
$14.90
500 credits
- 500 credits that never expire
- Standard benefits while pack credits remain
- Thinking and Tutor modes
- Upload physics problem images
- Access to advanced AI models
- Visual explanations
- No subscription required
One-time
Pro One-Time
$24.90
1,500 credits
- 1,500 credits that never expire
- Pro benefits while pack credits remain
- Thinking and Tutor modes
- Upload physics problem images
- Access to advanced AI models
- Top-priority responses and feedback
- Visual explanations
- No subscription required
Physics AI FAQ
Everything you need to know about Physics AI.
Free is for quick test drives with three guest requests before sign-in, image upload, and permanent signup credits. Standard adds more credits plus Guided Mode for regular homework. Pro gives you the highest credit limit, Guided Mode, advanced models, and priority speed for heavy or exam-level use.
The selected model shows its cost before you send. Physics AI Flash uses 1 credit per request, while advanced models use 4 credits. Paid-plan credits are granted monthly, including when the subscription is billed annually.
Once you use all your monthly credits, you can either wait until they refresh on your next billing date or purchase an extra credit pack. Your account and chat history remain safe; you just temporarily can't start new conversations.
A credit pack is a one-time purchase, not a subscription. Pack credits never expire. Standard One-Time and Pro One-Time include their matching plan benefits while that pack still has credits; they do not renew or grant monthly credits. Expiring subscription credits are used before permanent pack credits.
Purchasing another plan creates a new, independently billed subscription; it does not upgrade, downgrade, or cancel an existing subscription. Self-service plan changes and cancellation are not currently available in account settings, so contact support@physicsai.chat if you have a billing issue.
The Free plan lets you test Physics AI before paying. Cash refunds are not a currently supported product capability. If an AI request fails after consuming credits, the credit ledger automatically releases or returns those credits.