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Measure: AI & Search VisibilityWhat measuring costs

What measuring costs

Who pays for a measurement

Measuring asks real AI engines your questions on your own API key, so the engine bills you, not us. That is also why nothing is ever asked behind your back. The part that matters is live search: a model answering from memory cannot see anything you published this week, so we only count an answer as a measurement when the engine searched the web to give it.

The cheapest way with Google's Gemini: billing on

With billing switched on for your Google Cloud project, the first 5,000 Google searches a month are free, shared across the Gemini 3.x models. After that it is $14 per 1,000. What you pay for is the words the model writes: gemini-3.8-flash costs $0.75 per million tokens in and $3.75 per million out until Dec 31, 2026 — roughly a quarter of a penny a question. Weekly measurement of ten questions on one project uses about 43 searches a month, well inside the free 5,000.

Why not the free tier

On a key whose project has no billing, Google lists Search as "not available" for every Gemini 3.x model. The model still answers, from memory, and we mark that as training recall rather than a measurement. gemini-2.5-flash used to be the exception — it could search on a free key. Google closed it to new keys in September 2026 ("no longer available to new users"). If your key already uses it, it keeps working for now; a new key cannot choose it.

Setting it up

1. In Google AI Studio, create an API key on a Google Cloud project. 2. Set up billing on that project. 3. In Google Cloud billing, set a budget alert — £5 to £10 a month is plenty for weekly measurement. 4. Paste the key into Settings → AI keys here, and choose gemini-3.8-flash.

Your data

With billing on, Google's paid-tier terms apply: your questions — your brand, your competitors and your customers' phrasing — are not used to improve Google's products. In the UK, the European Economic Area and Switzerland, Google applies those terms to free use as well.

Other routes

OpenRouter's web search costs $0.007 a request on top of the model's own price, and works with the models it offers. The free offers you may have seen — Groq's free plan, Cerebras, Cloudflare Workers AI, OpenRouter's free models — give away tokens, not search; an answer from memory cannot measure anything published this week. Figures checked Sep 25, 2026.

Weekly measurement, on by default

Each project that qualifies is measured once a week on your key: ten questions on up to four of your engines that search the web. Before anything is spent we email the account holder what it will ask and about what it will cost, and the first run is 24 hours after that email. "Don't measure this project", in the email or on the project page, switches it off until you switch it back on there. See "Weekly measurement, on by default".

What else can spend your key — only if you switch it on

Three optional readings use your own key as well. All three are off unless you turn them on in Settings, under Advanced, Writing and checks, and each states its calls beside its switch. - Answerability grading: two or three calls per published page, once, nightly, up to ten pages a night. - Before-readings for new gaps: one small visibility check when the scan finds a gap, before anything is published for it — the subject's two standard questions asked of your watchlist's engines, so up to 8 calls with 4 engines, and at most 5 readings per project a day. - Passage check after writing: one call per section of a page for your own site, at most 12 a page, on your cheapest engine. The last two are asked as Turn on or Pass when you set up a project. Where the account has no AI key of its own, none of them runs and nothing is spent — we never use a key of ours for your account.

The ChatGPT and Gemini apps: your DataForSEO account, not your AI key

If you have the ChatGPT and Gemini apps asked your tracked prompts, those questions go through DataForSEO on your own DataForSEO account, not your AI key: about $0.0012 a question, outside your AI Overview budget, with each app's monthly estimate shown beside its switch. They are off until you switch them on for a project. See "Asking the ChatGPT and Gemini apps". Google AI Mode, asked your tracked prompts when you switch it on, is paid the same way: about $0.0012 a question on your DataForSEO credit, no budget, with its estimate beside its switch. See "Asking Google AI Mode".

Whichever you use, it is your key and your quota. You can change the engine, pause the weekly run or remove the key whenever you like, and nothing here asks an engine on your behalf afterwards.