What GEO share of voice means
Observed GEO share of voice measures your brand's portion of all brand and competitor mention instances in a defined set of AI-generated responses. Prompt coverage answers a different question: how many reviewed responses mentioned your brand at least once.
Use a reproducible observation set
Record the prompt list, models, dates, locations, account state, and model settings before counting. Count your brand at most once per response. Count competitor mention instances consistently. Re-run the same observation contract to measure change rather than mixing incomparable samples.
What this calculator does not do
The calculator does not query ChatGPT, Perplexity, Copilot, Claude, or Google AI on your behalf. It does not upload prompts, brand names, or answer text. It performs transparent arithmetic on counts you enter and reports the formula, which avoids presenting an invented cross-model score as live evidence.
From baseline to managed observation
AIRCITE's configured GEO lane can store approved prompt sets, execute supported provider observations, preserve timestamps and source metadata, and route verified gaps into content work. The free calculator is the honest starting baseline before that recurring workflow is connected.