Attensira has three plans: Starter at 129permonth,Growthat349 per month, and Business at $699 per month. Paying yearly costs twelve months for the price of ten. Plans differ in how many prompts you can track, how deeply each one is sampled, how long history is kept, and which features are switched on.
There is no Pro plan. If you have seen one named anywhere, it is not ours.
What each plan includes
Models are not gated by plan. Every plan can read the same model surfaces; a new workspace starts tracking two of them by default, and you turn on the rest yourself. See Models for which surfaces have readers.
Prompt slots are a stock, not a flow
A prompt slot is a place in your workspace where one tracked prompt lives. Slots are a stock: the count goes down when you add a prompt and back up when you remove one. Nothing about slots resets at the start of a month, and unused slots do not accumulate.
So on Growth, 150 slots means “at most 150 prompts tracked at any one moment”, not “150 prompts per month”. If you fill all 150 and want a new prompt, you remove one first, or move up a plan. Removing a prompt frees its slot immediately.
Removing a prompt stops future readings for it. What has already been measured stays subject to your plan’s retention window.
The monthly response budget is a flow
The monthly response budget is the other quota, and it works the opposite way. It is a flow: an allowance that is consumed as readings are collected during the month, and that resets when the billing period rolls over. Spending it does not reduce your prompt slots, and freeing a slot does not refund budget you already used.
These are two independent numbers measuring two different things. Slots limit how many prompts exist. The response budget limits how much answering work happens across them in a month. A workspace can be well inside its slot count and still be spending its budget quickly, because depth and model count multiply: each prompt is read on each tracked model, and each of those readings is sampled at your plan’s depth.
How sampling depth changes what you see
Sampling depth is the number of times the same prompt is put to the same model in a single reading. Starter samples once (n=1). Growth and Business sample three times (n=3), issued concurrently.
Depth is a measurement decision, not a cosmetic one. Models are not deterministic, so a single answer is a single draw. At n=1, most movements in your numbers will not clear the 95% significance gate and will be reported as no proven change rather than as a rise or a fall. At n=3 you get three draws per reading, so real movements clear that gate sooner.
Read Limitations before you act on a small sample. It explains exactly what the gate does and what a low n can and cannot tell you.
Changing plan
Upgrading raises your slot count and, on Growth and above, switches on Knowledge & Skills and Crawler Logs. Downgrading lowers your slot count and shortens retention, so plan for both: if you drop below the number of prompts you currently track, you choose which prompts to keep, and history older than the new retention window stops being available.
Billing, invoices, and plan changes live in your workspace settings. For what a credit is and which actions spend one, see Credits. 
