Opal
AI study assistant that generates notes, flashcards, and quizzes from your documents and audio files
| What is it | AI study assistant that generates notes, flashcards, and quizzes from your documents and audio files |
|---|---|
| Pricing | Freemium — from $5/mo |
| Free tier | Yes |
| Platform | Web Application |
| Best for | summarizing textbook chapters and lecture notes, creating study flashcards from course materials |
| Domain registered | 2024 |
Data updated Aug. 1, 2026
What does Opal do?
Opal is an AI-powered study tool designed specifically for students who need help processing and retaining academic material. It takes your documents—including PDFs, text files, and even audio recordings—and uses advanced AI to generate comprehensive notes, flashcards, and quizzes. The tool supports multiple languages and organizes your materials into folders with semantic search capabilities, making it easy to find exactly what you need when studying.
What makes Opal stand out is its comprehensive approach to studying. Beyond simple summarization, it offers an AI companion named Albert that can answer questions about your study materials, plus active recall quizzes that specifically target your weak areas. The platform uses OpenAI's GPT-3.5 and GPT-4 models to analyze content, and it includes performance tracking to help you monitor your progress over time. Your data remains secure and private, with bank-level security protecting your documents.
This tool benefits students at all levels, from high school to graduate school, who are looking to optimize their study time. Real-world use cases include quickly summarizing lengthy textbook chapters, creating flashcards from lecture recordings, and identifying knowledge gaps before important exams. The platform is particularly valuable for students handling multiple courses who need an efficient way to process and retain large amounts of information.
Key features
What makes it stand outWho is Opal for?
Who benefits most from this toolPricing
Free tier available — start without a credit cardFree
- 75,000 character limit
- 5 documents per month
- 5 albert questions per doc
- 5 assessment questions per doc
- GPT 3.5
- 5 documents/mo
- 5 Albert questions/doc
- 5 assessment questions/doc
- No specific assessment
- No personalized active recall
- 75,000 character limit
- No access to locked and beta features
Opal+
- 400,000 character limit
- GPT-4
- Unlimited documents
- Unlimited Albert questions
- Albert plugins
- Unlimited assessment questions
- Unlimited specific assessment
- Ultra-personalized active recall
- 400,000 character limit
- Access locked and beta features
Trust & presence
Gallery
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