R Rankio
Log in Get started
Home/ Glossary/ AI Share of Voice

What is AI Share of Voice?

Apr 22, 2026 5 min read Glossary, GEO

AI Share of Voice (AI SOV) is the percentage of brand mentions in AI-generated answers within a category that belong to your brand. If ChatGPT, Gemini, Claude, and Perplexity mention five brands in total across all relevant queries and yours appears twice, your AI SOV is 40%.

AI SOV answers the question: "When AI talks about my category, how often is it talking about me?" It's a competitive metric — your share of mentions relative to every brand in your market.

The formula

How AI Share of Voice is calculated

AI SOV = (Your brand mentions ÷ Total brand mentions in category) × 100

Example: Rankio runs 200 category queries across ChatGPT, Gemini, Claude, and Perplexity. Your brand appears in 60 answers. Competitors A, B, C appear in 40, 30, and 20 answers respectively. Total mentions = 150. Your AI SOV = 60/150 × 100 = 40%.

Rankio automates this calculation weekly so you can track share trends without manual querying.

Why it matters

Why AI SOV is a leading indicator of pipeline

Traditional Share of Voice (paid media, organic search) correlates with long-term revenue share. AI SOV follows the same logic but for AI-assisted buyer journeys. A fintech startup in Rankio's case studies grew from 12% to 36% AI SOV in 8 weeks after a structured content sprint — and saw a corresponding 22% increase in branded search volume.

How Rankio helps

How Rankio tracks AI Share of Voice

Rankio's competitive dashboard shows your AI SOV over time and breaks it down by LLM, by query type, and by competitor. You can see which rival is taking share from you and which content pieces are driving your own mentions — giving you an actionable optimization backlog.

FAQ

Frequently asked questions

Brand mentions count raw appearances. AI SOV is relative — it's your mentions as a proportion of all competitor mentions. A brand can have rising mentions while losing SOV if competitors grow faster.
In a 5-competitor market, the average SOV is 20%. Leaders typically hold 35–50%. Under 10% in a competitive market suggests significant AI visibility work is needed.
All four major LLMs — ChatGPT, Gemini, Claude, and Perplexity — can drive buyer decisions. Rankio measures SOV across all four and shows you where you're strong and where you're being outpaced.
Yes. Because LLMs re-index web content periodically and are influenced by newly published authoritative content, a focused content sprint can shift AI SOV in 2–6 weeks. Unlike domain authority, AI SOV is relatively responsive to fresh content signals.

Ready to measure your AI visibility?

See your Visibility Score across ChatGPT, Gemini, Claude, and Perplexity in minutes.

Get started Book a demo

Continue reading

AI Share of Voice Guide Complete guide to measuring and growing your AI SOV. What is a Visibility Score? The absolute metric that pairs with AI SOV for a complete picture. What is AI Visibility? The broader concept that AI SOV measures competitively.