AI share of voice

also known as: share of model · answer share

A brand’s proportion of presence in AI-generated answers relative to competitors: across a set of captured answers, how often each brand is mentioned or cited, in what position, and with what sentiment. Because AI answers differ by surface, phrasing and region, share of voice is only meaningful when computed from the actual rendered answers, captured and compared over time.

In AI Search API

Computed from the Envelope’s mentions layer: every detected mention carries a brand, its position in the answer, a sentiment, and the sourceIds backing it. Mentions are a derived layer, versioned separately with an engine name and a confidence score — so a scoring change never silently rewrites historical share-of-voice numbers.

Envelope — the mentions layer (shape)

"evidence": {
  "mentions": {
    "engine":     "…",   // extraction engine + version
    "confidence": 0.0,   // 0..1
    "items": [
      { "brand": "…", "position": 1, "sentiment": "positive", "sourceIds": [2] }
    ]
  }
}

Related terms

See it in the product

Every definition here is enforced in the Envelope contract — run a capture and read the fields yourself.

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