A ChatGPT alternative that cites your documents
ChatGPT is great for general questions. When the answer has to come from your notes, papers, or course files, Silas searches your whole library and cites the exact page, with Claude, Gemini, and GPT in one app.
Silas vs. ChatGPT
| Feature | Silas | ChatGPT |
|---|---|---|
| Files you can ask across | 250 documents on Student, 5,000 on Pro, 25,000 on Research | Up to 25 files per project on Plus, 40 on Pro and business plans |
| Citations | Every answer cites the exact file, page, and section | Can reference uploaded files; page-level citations are not documented |
| AI models | Claude, Gemini, and GPT, switchable mid-chat | OpenAI models only |
| Course and file sync | Canvas LMS, Google Drive, and Microsoft 365 | Google Drive and SharePoint/OneDrive apps, among others |
| Study tools | Flashcards, quizzes, and LaTeX built from your files | Study mode and flashcards |
| Price | Free plan; Student $10/month with every model | Free plan; Go $8/month; Plus $20/month |
ChatGPT details are based on OpenAI's public documentation as of October 2026 and may change.
When Silas is the better fit
If you mostly brainstorm, write, or ask general questions, ChatGPT does the job. Silas is for the moments when the answer lives in your own material: a reading list, a semester of lecture slides, a folder of contracts or reports. There, a cited answer you can verify beats a fluent one you have to trust.
You also are not locked into one model provider. Ask GPT, then have Claude or Gemini check the answer in the same thread. See multi-model chat and how citations work.
Frequently asked questions
Why use a ChatGPT alternative for documents?
ChatGPT is a strong general assistant, but projects hold a limited number of files and answers about them are not cited to the page. Silas is built for asking questions across a large library of your own documents and checking every answer against the source.
Can I still use GPT in Silas?
Yes. Silas includes GPT alongside Claude and Gemini on paid plans, and you can switch models in the same conversation without re-uploading anything.
Is Silas cheaper than ChatGPT Plus?
The Student plan is $10/month and includes every model family, compared with $20/month for ChatGPT Plus. Pro is $20/month and raises the library to 5,000 documents.
Does Silas make things up like ChatGPT sometimes does?
When you ask about your documents, Silas answers from passages it retrieves and cites them, and says when the answer is not in your files. No model is perfect, which is why every claim links to the source so you can check it.
Can Silas do everything ChatGPT does?
Not everything. ChatGPT has features Silas does not, like voice mode and its own app ecosystem. Silas focuses on cited answers from your documents, study tools, and access to several model families in one place.
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