Numas Study · Guide
Setting up the AI features
Numas Study's AI features are optional and use your own personal key (BYOK model). Here's how to get one and where to enter it.
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The app already works without a key
Reading PDFs, quizzes from question banks with grading, text-to-speech, review and study plan need no setup at all. The AI features — summaries, oral exam simulation, outlines — are an optional extra you enable only if you want.
How it works (BYOK)
The AI features rely on your personal key from an external provider: Claude (Anthropic), OpenAI or Google Gemini. You create the key on the provider's site and paste it into the app under Settings → AI Provider. Numas is not an intermediary: it's a direct relationship between you and the provider.
How much it costs
AI calls are billed per use, directly by the provider, never by Numas. For student-level use it's usually a few euros. It's worth setting a spending limit in the provider's dashboard so there are no surprises.
Where to start for free
If you just want to try it out, Google Gemini offers a free tier with no credit card (with daily limits): it's the simplest starting point. Claude and OpenAI require a small prepaid credit instead.
Keeping your key safe
The key is like a password: personal and private, never to be shared. In the app it's stored in the device Keychain. Each device has its own store: a key entered on iPhone does not sync to the Mac, it must be re-entered on each device.
Getting the key, provider by provider
Claude (Anthropic)
console.anthropic.com ↗
- Create an Anthropic account, or sign in if you already have one.
- Go to Settings → API Keys.
- Click "Create Key" and give it a name.
- Copy the key right away: it's shown only once.
- Paste it into Numas Study → Settings → AI Provider.
Requires a payment method or purchased credits before use. The key starts with sk-ant-.
OpenAI
platform.openai.com ↗
- Create an OpenAI account, or sign in with your ChatGPT credentials.
- Verify your phone number.
- Go to API keys → "Create new secret key" and give it a name.
- Copy the key right away: it's shown only once.
- Paste it into Numas Study → Settings → AI Provider.
Requires prepaid credit (minimum ~$5). Note: a ChatGPT Plus subscription does not include API access, it's separate. The key starts with sk-proj- or sk-.
Google Gemini
Free to start
aistudio.google.com ↗
- Sign in with a Google account.
- Click "Get API key".
- Select or create a Google Cloud project.
- Create and copy the key.
- Paste it into Numas Study → Settings → AI Provider.
Has a free tier with no credit card (with daily limits), ideal to get started. The key starts with AIza.
Warnings
- Never share your key publicly or enter it into third-party sites or code.
- Set a spending limit in the provider's dashboard to avoid unexpected charges.
- Provider steps and screens can change over time: when in doubt, refer to the provider's official documentation.
The AI features are optional. Numas never receives your key or any payment from API usage: the cost is handled directly with the provider.