Scale of the AI answer surfaces
| Metric | Figure | Source & date |
|---|---|---|
| Google AI Overviews monthly users | 2.5B+ | Alphabet Q2 2026 earnings call (Aug 2026) |
| Google AI Mode monthly users | 1B+ | Alphabet Q2 2026; merged with AI Overviews at Google I/O 2026 |
| AI Overviews coverage | 200+ countries, 40+ languages | Google I/O 2025, expanded through 2026 (France live Jul 2026) |
| AI Overviews default model | Gemini 3 (Jan 2026), Gemini 3.5 Flash post-merger | Google product announcements |
| ChatGPT weekly active users | ~900M | OpenAI, "Scaling AI for Everyone" (2026) |
| ChatGPT daily prompts | ~2.5B | Industry analyses, mid-2026 |
| Gemini app monthly users | 750M+ | Alphabet disclosures (Feb 2026) |
| Perplexity monthly queries | 1B+ (from 780M in May 2025) | CEO statements; company reporting 2026 |
| Perplexity monthly users (all products) | 100M+ | Company statements via press, 2026 |
What AI answers do to clicks
| Finding | Figure | Source & date |
|---|---|---|
| Position-1 CTR with AI Overview present | −58% (0.016 vs 0.039) | Ahrefs, Dec 2025 data published Feb 2026 |
| Earlier Ahrefs baseline | −34.5% | Ahrefs, 300k keywords, Apr 2025 |
| Click rate with vs without AI summary | 8% vs 15% | Pew Research, Jul 2025 |
| US Google searches ending without a click | ~68% (Jan–Apr 2026) | Similarweb panel via SparkToro, Jun 2026 |
| AI Overviews trigger rate (broad panels) | ~16–25% of queries; ~40%+ on clickstream panels | Semrush Nov 2025; Similarweb 2026 — methodologies differ, treat as ranges |
| Share of AIO-triggering queries that are informational | ~88% | Semrush, 2025 |
| B2B tech queries triggering AI answers | 36% → 82% | Position Digital tracking, 2025–2026 |
The forecast everyone quotes — and its context
Gartner's February 2024 press release predicted that traditional search engine volume would drop 25% by 2026 as AI chatbots substitute for search queries. The release printed no baseline or method, and Google's own statements say queries remain at all-time highs — the two are reconcilable once you separate queries from clicks: people search as much as ever, but a growing share of searches resolve without a visit. For brands, the operative shift is not "search is dying" but "answers are being consumed where you cannot measure them with a web analytics tool."
How to read these numbers (our methodology note)
- Panels disagree by design. Semrush tracks fixed keyword sets; Similarweb models clickstream; BrightEdge skews commercial. Ranges are honest; single-point precision is not.
- Vendor numbers are marketing too. Platform user counts come from the platforms. We label them as such.
- Direction beats level. Every independent series agrees on direction: more queries answered by AI, fewer clicks per answer, wider engine coverage. Budget decisions should rest on the direction, not the decimal.
Sources: Alphabet Q2 2025–Q2 2026 earnings calls; OpenAI "Scaling AI for Everyone" (2026); Ahrefs AI Overview CTR studies (Apr 2025, Feb 2026); Pew Research (Jul 2025); Semrush AIO tracking (Nov 2025); Similarweb/SparkToro zero-click panel (Jun 2026); Gartner press release (19 Feb 2024); Search Engine Land Perplexity statistics (Oct 2025). All figures cited with their publication dates; methodologies differ as noted.