Module 2 · Lesson 1/4 · ~10 min read
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What Share of Voice Is and How to Calculate It
What AI Share of Voice means, its formula, and a worked representative example (6 ÷ 20 = 30%). Why mentions are added up before dividing.
Learning goals
- States the three parts of the SOV definition: competitor-relative, on non-branded questions, a share of valid mentions.
- Calculates SOV from representative data (e.g. 6 ÷ 20 = 30%).
- Explains why mentions are aggregated before dividing.
- Lists what SOV does not tell you.
In this lesson
Module 1 explained how AI assistants put an answer together. This module is about measuring those answers. We start with the number at the center of it: the SOV Score.
By the end you will be able to calculate SOV from a handful of numbers and spot one of the most common calculation mistakes.
The definition
SOV stands for AI Share of Voice. In SOV Tracker it is shown as the SOV Score.
Here is the definition: the SOV Score is your brand's share of valid mentions within the competitor set you confirmed, measured on eligible answers to non-branded questions.
Each part matters:
- Competitor-relative. SOV doesn't answer "how often was I mentioned?" It answers "of all the mentions of me and my competitors, what share is mine?"
- Non-branded questions. Neither your brand nor any confirmed competitor is named in the question. If a brand name were in it, the AI would naturally repeat it, and you'd be measuring nothing. Lesson 2 covers this.
- Valid mentions. What counts is the brand actually being named in the answer. The product matches names to brands using its own rules.
The SOV Score is a share, not a grade. 30% doesn't mean "you scored 30 out of 100". It means "30% of the mentions in this set are yours".
The formula
SOV = valid mentions of the target brand ÷ (valid mentions of the target brand + valid mentions of every confirmed competitor) × 100
The result is rounded to a whole percent.
Only two groups sit in the denominator: your brand and the competitors you confirmed. Any other name in the answer stays out.
Worked example (representative)
The brand and numbers in this example are fictional.
Acme Helpdesk is a fictional help-desk software company selling to small teams worldwide. It has confirmed two direct competitors: Competitor A and Competitor B.
In one weekly measurement, the answers to non-branded questions contain these mentions:
| Brand | Valid mentions |
|---|---|
| Acme Helpdesk | 6 |
| Competitor A | 8 |
| Competitor B | 6 |
Step by step:
- Find the denominator: 6 + 8 + 6 = 20
- Divide the target brand by it: 6 ÷ 20 = 0.30
- Turn it into a percentage: 0.30 × 100 = 30%
The same answers also mention a software review platform five times. That platform is not a competitor Acme Helpdesk confirmed; it's a place where buyers compare tools. So it stays out of the denominator. Adding it would give 6 ÷ 25 and misstate how Acme Helpdesk stands against the companies it actually competes with. Module 6 covers how to choose a competitor set.
Add up first, then divide
A common mistake: work out a percentage for each answer, then average those percentages. That is not how SOV works.
The rule: add up the mentions across every answer in the period first, then divide once.
Representative example, fictional numbers:
| Answer | Acme Helpdesk | Competitor A | Competitor B | Share within answer |
|---|---|---|---|---|
| 1 | 1 | 1 | 0 | 1 ÷ 2 = 50% |
| 2 | 1 | 0 | 7 | 1 ÷ 8 = 12.5% |
- Wrong (average of percentages): (50% + 12.5%) ÷ 2 = 31.25%, about 31%
- Right (add up first): Acme Helpdesk 1 + 1 = 2. Total 2 + 8 = 10. SOV = 2 ÷ 10 = 20%
That's a big gap. Averaging gives a short answer naming two brands the same weight as a long answer with eight mentions. Adding up first counts every mention once.
What SOV does not tell you
The SOV Score answers one narrow question well. It does not tell you:
- Market share or revenue share. A 30% share of AI mentions is not 30% of sales.
- Anything weighted. There is no weighting for how widely an engine is used, how popular a question is, or how early the brand appears in the answer. Position is a separate measure, covered in Lesson 4.
- A number you can blend across scopes. SOV is calculated inside one measurement scope: one brand, one country, one language (and, where set, one place, sales channel, branch or product/service focus). A US-English result and a UK-English result can't be added together or averaged.
- A permanent ranking. Each measurement is a dated sample of the answers that came back.
When SOV is measured
On paid plans, the official SOV comes from the weekly measurement, in which every tracked question is asked on five engines within the same window. Weeks measured with the same question and competitor sets, with all five engines healthy, can be compared with each other.
The free scorecard doesn't produce SOV at all; its headline number is a different metric. That's the next lesson.
For the official wording, see the SOV Score definition and the formula with a worked example.
Summary
- The SOV Score is your share of valid mentions within your confirmed competitor set, on eligible answers to non-branded questions.
- Formula: target ÷ (target + confirmed competitors) × 100. Representative example: 6 ÷ 20 = 30%.
- Names outside the confirmed set, such as review platforms, stay out of the denominator.
- Add mentions up first, then divide; never average per-answer percentages.
- SOV is a share, not a grade. It isn't market share, isn't weighted and can't be blended across scopes.