COREADING uses a credit-based billing system. You purchase credits and use them as needed for AI services. Different operations consume different credits, for example: File upload: 10 credits per MB, Vector embedding generation: 1 credit per 1000 tokens, AI model summarization or chat: charged per selected model. Based on the most economical model (Gemini) and standard workflow, each page consumes approximately 1.4 credits.
The main differences are: Different number of credits provided, Different theoretical processing capacity (larger packages offer better value)
We currently support the following mainstream models with different credit consumption: Gemini Flash (basic model, best value), GPT-4o Mini (lightweight GPT-4), DeepSeek (Chinese optimized), ChatGPT-4o (strong comprehensive capabilities), Claude Sonnet 4 (excellent complex writing and reasoning). We will continue expanding model choices in the future.
Credits required per model call (for summarization or chat): Gemini: 1 credit, GPT-4o Mini: 2 credits, DeepSeek: 3 credits, GPT-4o: 25 credits, Claude Sonnet 4: 36 credits. Specific consumption will be displayed before calling for your selection.
You can: Upload books or documents, Automatically build embedding vectors for semantic search, Chat with AI to understand content, Quickly generate content summaries, Explain or analyze complex content, Search for any sentence in books and trace its context
This depends on your total credits and usage. If only using Gemini and following the standard path (upload → embed → summarize), each page consumes approximately 1.4 credits. For example, 4000 credits can process approximately 2800 pages.
Currently purchased credits have no time expiration limit and can be retained long-term for use when needed. However, please note: Credit usage depends on COREADING service's continued operation. In case of force majeure, platform closure, or business termination, unused credits may not be usable. We will make every effort to notify users in advance and provide reasonable solutions in such circumstances.
Refunds are currently not supported. Please choose packages reasonably based on your needs.
Absolutely. Credit balance will automatically accumulate and deduct, you can use them multiple times without needing to use all at once.
Supported formats: PDF (recommended), EPUB (for text content parsing). We recommend uploading documents with clear structure and mainly text content, avoiding scanned or heavily image-based PDFs.
We support file uploads up to 50 MB. For files exceeding the limit, try splitting the file before uploading.
Yes. After uploading an entire book or long document, you can select chapters, paragraphs, or sentences on the page for summarization, explanation, or Q&A.
On your account homepage or 'Credit Center' page, you can view: Current credit balance, Remaining readable pages (calculated with Gemini), Credit consumption history
Yes. Advanced models (like GPT-4o or Claude) consume higher credits per request. We recommend using them for key chapters or high-value content for optimal cost-effectiveness.
Yes. You can specify a default model in settings, for example, only using Gemini to control credit consumption.
Currently we only offer one-time credit purchases. We are evaluating subscription plans and welcome you to share your needs through settings or feedback channels.
Currently supported: Web browser (desktop/mobile browsers)
If you encounter issues: Paid users can submit questions on the account page, we will respond via email support. You can also email support@coreading.ai for assistance
Team accounts and credit sharing are currently not supported. We plan to provide 'Team Space' functionality in the future, supporting member resource sharing and credit management.
Yes, the system will automatically deduct required credits each time you call AI. The system will prompt estimated consumption before calling, and you can confirm whether to proceed.