ChatGPT Usage Statistics: September 2025
Our team compiled data from 14 unique sources to estimate ChatGPT’s usage as of August 2025.

Our team compiled data from 14 unique sources to estimate ChatGPT’s usage as of August 2025.
Our research team calculated the average CAC for startups across 29 industries, which we further subdivided into B2B and B2C companies.
This report provides our findings on the top medical SEO agencies, based on their experience, notable clients, and size.
This report provides our findings on the top SaaS SEO agencies, based on their experience, specialties, notable clients, and leadership.
In this report, we share out data on SaaS free trial (both opt-in and opt-out) and freemium conversion rate benchmarks.
Our research team conducted an analysis of the top cardiologist SEO agencies in the United States and selected the top 8 agencies to feature in this report.
Our team analyzed the top generative engine optimization and AI search experts, to determine the top thought leaders and practitioners in this emerging field.
Our research team conducted a comprehensive analysis of the leading answer engine optimization firms, and selected the top 8 performers to present in this report.
Our research team conducted a comprehensive study of ecommerce ERP integration companies from March-August 2025, analyzing 43 firms in the process. We compared them using 6 criteria.
In this article, we share our research on the 10 largest SEO companies that specialize in different niches.
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