of AI answers about professionals were error-free
correlation Google position ↔ LLM citation
citation rate in Perplexity (domain authorities)
What do the AI search statistics for 2026 show?
The figures point to two parallel trends: AI search keeps growing, and classic Google rankings say little about visibility inside it. In August 2026 OpenAI reported more than 1 billion weekly users, though it is unclear whether for ChatGPT alone. In our audit cohort of 500+ enterprise domains, AI Overviews absorb 28 to 41 percent of clicks on informational queries (data as of April 15, 2026). In State of AI Search 2026, based on 12,000 prompts across six AI systems, the correlation between Google position and LLM citation rate is 0.42, and 41 percent of brands that dominate Google are underrepresented in ChatGPT and Perplexity.
Factual accuracy is limited too: in the August 2026 entity resolution pilot, only 18.5 percent of 54 model answers about industry professionals were error-free. Since August 31, 2026, Google has reported impressions from AI Overviews and AI Mode in Search Console for all websites, but without clicks or queries.
Usage: the shift to answer search
- In August 2026 OpenAI reported more than 1 billion weekly users. Reports differ on whether the figure covers ChatGPT alone or all OpenAI products; the latest figure clearly attributed to ChatGPT is more than 900 million (February 2026). OpenAI's most recent published volume figure is older: in July 2025, 700 million weekly users sent about 18 billion messages per week, roughly 2.5 billion per day. (Sources: OpenAI, August 31, 2026; OpenAI Economic Research: How People Use ChatGPT, September 15, 2025)
- Google AI Overviews absorb 28–41% of clicks in informational query clusters — measured via the AI Overview Absorption Rate across a cohort of 500+ enterprise domains, October 2024 to April 2026. (Source: own measurement, SUMAX Research; data as of April 15, 2026, see benchmarks)
- AAR benchmarks by intent: informational 0.28–0.41 · navigational (brand) below 0.10 · transactional 0.05–0.18. Click loss is intent-dependent, not evenly distributed. (Source: own measurement, same cohort; data as of April 15, 2026)
- Model usage weights, EU market (working model 2026): ChatGPT ~52% · Google Gemini ~22% · Claude ~11% · Perplexity ~10% · Bing Copilot ~5%. Basis of share-of-model weighting. A working model, not a market statistic. (Source: own calibration, SUMAX Research; data as of April 15, 2026, see benchmarks)
Citation benchmarks: how often sources actually get cited
The ranges below are working values from our consulting practice, not a guarantee and not a published study. Treat them as orders of magnitude; what matters is the trend in your own prompt set.
- Perplexity: 2–8% citation rate for domain authorities on subject-matter queries — the most citation-friendly system. (Source: own working values from ongoing measurement, SUMAX Research, as of August 2026; definition: citation rate)
- ChatGPT with Search: 1–5% — fewer source slots per answer, stronger consolidation. (Source: ibid.)
- Google AI Overviews: 0.5–3% for top domains — smallest source selection, highest competition. (Source: ibid.)
- Measurement basis for robust values: 500–2,000 prompts per week across several models and runs; single prompts are worthless as measurement. (Source: LLM Citation Benchmark, SUMAX Research, April 22, 2026)
Entity resolution: what AI models get wrong about people
All figures from the Entity Resolution Pilot DACH SEO 2026 (collected August 25, 2026, published August 26, 2026; 54 answers, 3 standardized prompts × 18 people, against ground truth verified via web research; open aggregate data):
- Only 18.5% of answers error-free (10 of 54) — in a sample drawn largely from the industry's most visible figures.
- 46.3% contained false claims (25 of 54) — from invented podcast names to attributions to the wrong companies.
- Largest error class “partially correct”: 31.5% — right person, plausible but invented details. The most insidious class, because it spreads unchecked.
- 38.9% of the people (7 of 18) were never correctly resolved in any answer.
- Domain context eliminates misattributions: context-free prompts produced 4 misidentifications/confabulations each; the prompt with SEO context produced zero.
Ranking ≠ LLM visibility: the decoupling
All figures from State of AI Search 2026 (collected March and April 2026, published April 22, 2026; 12,000 prompts, six AI systems, 150+ brands, eight industries; open aggregate data):
- 41% of brands dominant in Google SERPs have below-par visibility in ChatGPT and Perplexity (the LLM gap).
- Correlation Google position ↔ LLM citation rate: 0.42 — brand visibility in LLMs is largely decoupled from SERP position.
- Industry baselines of LLM citation rate (median): Legal Professional Services 31% · Travel/Hospitality 28% · Automotive 26% · B2B software 24% · E-commerce retail 22% · Finance 19% · Healthcare 18% · Industrial manufacturing 14%. Full table as CSV.
Google surfaces: the documented state in 2026
- Search Console generative AI performance reports for all websites worldwide since August 31, 2026: for the first time, official impressions from AI Overviews, AI Mode and generative Discover features, broken down by page, country, device and date — without clicks, without queries. Announced June 3, 2026 for a subset of websites. A logging error lowered impressions for August 13 to 17, 2026; Google restored the data on August 21. (Sources: Google Search Central Blog, June 3, 2026; Search Console Help; Data anomalies in Search Console; analysis: deep dive)
- Preferred Sources acts into AI Overviews and AI Mode: the rollout to both surfaces started on May 27, 2026. Users mark preferred sources (domains and subdomains only, no subdirectories); since August 20, 2026 there is an official interactive button for site owners to embed. Effect strictly personalized, effect size unquantified by Google. (Sources: Google documentation on preferred sources; Google documentation changelog, entries of May 27 and August 20, 2026; analysis: deep dive)
- FAQ and HowTo rich results are discontinued: HowTo rich results since September 13, 2023; FAQ rich results were restricted to well-known government and health sites from August 2023 and disappeared from Google Search entirely on May 7, 2026. The markup remains usable as a semantic declaration; a citation effect in AI Overviews is not proven. (Sources: Google Search Central Blog, August 8, 2023, updated September 14, 2023; Google documentation changelog, entry of May 8, 2026)
Transparency case: this domain's own measurement
Because statistics pages love aggregating other people's numbers while hiding their own — here is this domain's baseline from the GSC generative AI report (collected August 26, 2026, period May 24 to August 23, 2026, old site version before the relaunch):
- 9,449 AI impressions in three months, rising trend (August peaks ~250–300/day versus ~100 in June).
- 135 pages appeared in generative AI features; 9 of the top 10 pages were English-language glossary entries.
- Complete AI fan-out prompts appeared as queries in the data — visible evidence of the decomposition machinery.
This baseline will be continued with future measurements — including the effects of the August 26, 2026 relaunch. (Source: own Search Console property)
Methodology & how to cite
Inclusion criteria: every figure on this page is either our own survey by SUMAX Research (with linked aggregate data where published) or an officially documented vendor figure with a date, linked to the primary source. Working values and working models are labeled as such. Outdated values are replaced, not silently overwritten — substantial changes are documented in the page's update state.
Changes as of September 23, 2026: updated the ChatGPT user figure from 800 million (2025) to OpenAI's report of more than 1 billion weekly users (August 2026), noting that it may include other OpenAI products. Removed the claim that a growing share of ChatGPT prompts runs with web search enabled, because no primary source quantifies it. Corrected the Search Console rollout to all websites to August 31, 2026 (previously August 11) and narrowed the logging error to the documented period of August 13 to 17, 2026. Labeled the citation-rate ranges as our own working values instead of attributing them to the LLM Citation Benchmark.
How to cite (CC BY 4.0): “Ulusoy, M. (2026): AI Search Statistics. SUMAX Research. https://www.muratulusoy.de/en/ai-search-statistics.html” — for individual figures, please also name the primary source given.
Sources
- OpenAI: A milestone in expanding access to AI (August 31, 2026)
- OpenAI Economic Research: How People Use ChatGPT (PDF) (September 15, 2025)
- Google Search Central Blog: Introducing Search Generative AI performance reports in Search Console (June 3, 2026, updated August 31, 2026)
- Search Console Help: Generative AI performance report (Search)
- Search Console Help: Data anomalies in Search Console
- Google Search Central: Preferred sources
- Google Search Central: Latest documentation updates
- Google Search Central Blog: Changes to HowTo and FAQ rich results (August 8, 2023)
- Our own research: State of AI Search 2026 · Entity Resolution Pilot 2026 · LLM Citation Benchmark · Benchmarks (data as of April 15, 2026)