B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Current
800,000,000
800,000,000 -- user base for ChatGPT (2026)
ChatGPT Search is now free for 800 million users.
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
800,000,000
Unit
Count
Data Vintage
2026
Entity
Geography
EMEA
Evidence Quality
B
Strong, reliable evidence
Sourced from a well-regarded research firm or industry leader with transparent methodology and a reasonably large sample.
Single source - not yet corroborated
Score breakdown
Extraction
75
Source Trust
60
Citation Chain
20
Independence
30
Methodology
45
Freshness
95
Source
OpenAI
Primary
Tier B
https://www.365iwebdesign.co.uk/news/2026/01/18/how-ai-is-changing-search/ ↗
Source Article
How AI is Changing Search | AI Discovery for Business | 365i
Something fundamental is shifting in how people find businesses online. For twenty years, we have all played the same game: optimise for Google, climb the rankings, hope someone clicks. But a new behaviour is emerging, and it is changing everything.
Instead of typing keywords into a search box, mill…
Original Research
OpenAI
· Original study ↗
Methodology
Platform metric cited by secondary publisher
Methodology documented
Segmentation
IndustryAI
RegionEMEA
RoleAll marketers
Cite this stat
Plain Text
ChatGPT: 800,000,000 user base. Source: OpenAI (2026). Via Lighthouse Intelligence -- https://lighthousedata.io/data/chatgpt-search-800m-users
HTML Embed
<blockquote cite="https://lighthousedata.io/data/chatgpt-search-800m-users" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>800,000,000</strong> -- user base for ChatGPT<br><small>Source: OpenAI (2026) · <a href="https://lighthousedata.io/data/chatgpt-search-800m-users" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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