Choosing a model
You can let us pick, choose a tier, or name a specific model. What each option means, and what happens when your plan does not include the one you asked for.
Updated August 9, 2026
The default is a real choice, not a fallback
If you say nothing, an AI tool uses the model we have configured for it. That is deliberately chosen for value rather than for headline quality, and for most work it is the right answer.
Tiers
Models are grouped into three tiers:
| Tier | What it is for |
|---|---|
| Economy | Fast and cheap. Good for summarising, extraction and classification. |
| Balanced | The middle ground. |
| Premium | The strongest models. Slower and several times more expensive per token. |
Asking for a tier rather than a specific model is usually the better choice, because a named model eventually gets retired and your code keeps working if you asked for a tier.
Over the API
Send a model parameter with a tier name, a model id, or a model name:
Bashcurl -X POST "https://api.toolsxpo.com/v1/text-summarizer" \ -H "Authorization: Bearer $TOOLSXPO_KEY" \ -H "Content-Type: application/json" \ -d '{"text":"…","model":"economy"}'
In the dashboard
Dashboard → API configuration lets you set a default model per tool, for the whole workspace or for one API key — so a production key and a test key can use different models without changing any code.
If your plan does not include it
Some models are limited to paid plans. If you ask for one you cannot use, the call still runs on the tool's default model rather than failing. We would rather return a working answer than a 403 you have to write code around.
The response always reports which model actually answered, so nothing is hidden — and because a cheaper model sits on a cheaper tier, running on it simply costs you less. There is no situation where a fallback charges you more than the model you asked for.
Your own instructions
Alongside the model you can save your own instructions — tone, format, house style. They are added on top of the tool's own instructions, not in place of them, so the tool still does its job the way it is documented to.
They are charged as input tokens on every call.
Related
AI tools: what they are and how they differ
A handful of our tools call an AI model instead of running in your browser. That changes three things: where your data goes, what a call costs, and whether you need an account.
How AI calls are billed
An AI call costs a base charge plus the tokens it uses. Here is exactly how that is calculated, what a token is, and how to keep the cost down.
What happens to what you send an AI tool
Where your input goes, who processes it, how long we keep it and what we record about the call.
Scheduled automation
Run a tool, a model, or both on a schedule — and have the result emailed, POSTed to your server, or saved.