B
Evidence Grade B
Graded
accuracy verified by the review judge
Safe to Cite
Recent
77.6%
77.6% -- ai search market share for ChatGPT (2025)
ChatGPT's AI search market share recently rebounded from 77.6% to 80.1%.
- Represents the prior level before ChatGPT's recent rebound to 80.1%
Attribution:
View source
Lighthouse Research Team
Last verified:
·
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Source verified
Evidence graded
Value
77.6%
Unit
Percentage
Data Vintage
2025
Entity
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
Similarweb
Primary
Tier B
https://www.businesstechweekly.com/technology-news/chatgpts-market-share-transforming-ai-search-whil… ↗
Source Article
ChatGPT’s Market Share: Transforming AI Search While Traditional Engines Decline
ChatGPT’s Market Share: Transforming AI Search While Traditional Engines Decline
ChatGPT Dominates AI Search Market While Traditional Search Engines Decline
ChatGPT has secured an overwhelming 80.1% share of the AI search market, according to new data from Similarweb's latest market analysis, while …
Original Research
Similarweb
· Original study ↗
Methodology
Similarweb market analysis; rebound over past six months
Methodology documented
Trend Over Time
| Period | Value | Change |
|---|---|---|
| 2025 (current) | 80% | |
| 2025 (current) | 77.6% | -3.0% |
| 2026 | 78.16% | +0.7% |
| 2026 | 80.1% | +2.5% |
| 2026 | 60% | -25.1% |
| 2026 | 59.9% | -0.2% |
Segmentation
Industrymarketing
Cite this stat
Plain Text
ChatGPT: 77.6% ai search market share. Source: Similarweb (2025). Via Lighthouse Intelligence -- https://lighthousedata.io/data/chatgpt-rebound-77-6-to-80-1
HTML Embed
<blockquote cite="https://lighthousedata.io/data/chatgpt-rebound-77-6-to-80-1" style="border-left:3px solid #2563eb;padding:12px 16px;margin:16px 0;font-family:system-ui,sans-serif;background:#f0f4ff;"><strong>77.6%</strong> -- ai search market share for ChatGPT<br><small>Source: Similarweb (2025) · <a href="https://lighthousedata.io/data/chatgpt-rebound-77-6-to-80-1" target="_blank" rel="noopener">Lighthouse Intelligence</a></small></blockquote>
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