Covers: September 2026 | Last updated: 2026-09-01 | Edition: 21 | AI Girlfriends Industry Index →
September 2026 at a Glance
- 37.4 million monthly active users across the AI companion category in September 2026, up +3.9% from 36.0 million in August 2026, per the AI Girlfriends Industry Index.
- The Companion Engagement Index (CEI) registered 77.4 in September 2026, per the AI Girlfriends Industry Index.
- Average Daily Conversation Length reached 27.3 minutes per active user in September 2026, per the AI Girlfriends Industry Index.
- Voice Adoption Rate reached 52% of paid subscribers in September 2026, per the AI Girlfriends Industry Index.
- 30-Day Retention Rate (R30) for new users in September 2026 was 45%, per the AI Girlfriends Industry Index.
- The Monetisation Success Score (MSS), the 90-day paid conversion rate, was 40% in September 2026, per the AI Girlfriends Industry Index.
- 20.2% of monthly active users held a paid subscription in September 2026, with ARPU at $27.02 per paying user per month, per the AI Girlfriends Industry Index.
Editor’s Note
The monetisation picture in September 2026 held its shape: CPR at 20.2% of monthly active users and ARPU at $27.02 per paying user. Both moving in the same direction, breadth and depth together, is the favourable geometry for a subscription category. The paying base widened while the average paying user grew more valuable.
Numbers from August 2026 referenced here match the values published in that edition exactly.
Methodology at a Glance
Live edition
This is a live edition of the AI Girlfriends Industry Index, computed from first-party platform data at month-end. All live editions use the same methodology and sample construction described below.
- Coverage period: September 2026
- Sample: First-party session and account records, AIGirlfriends.AI platform, anonymised and aggregated
- Data sources: Session logs, subscription records, interaction metadata (text, voice, image)
- Press contact: [email protected]
Market Size and Adoption in September 2026
The AI Girlfriends Industry Index recorded 37.4 million monthly active users in September 2026, up +3.9% from 36.0 million. New registrations were 1,720,000 for the month.
Geographic distribution: North America ~36%, Europe ~26%, Asia-Pacific ~28%, other regions ~10%. Asia-Pacific continued to show the fastest absolute new-user growth. The AIGirlfriends.AI platform contributed approximately 12 to 14% of category-wide MAU, consistent with prior months.
Engagement and Retention in September 2026
The Companion Engagement Index registered 77.4 in September 2026. The daily active rate was 59%.
Average Daily Conversation Length was 27.3 minutes in September 2026.
Voice Adoption Rate was 52% of paid subscribers. Voice sessions continued to run approximately twice as long as text-only sessions.
The 30-Day Retention Rate for September new users was 45%. Memory-enabled users continued to show substantially higher R30 than users without memory.
Revenue, ARPU, and Willingness to Pay
Conversion-to-Paid Rate in September 2026 was 20.2%, with ARPU at $27.02 per paying user per month, per the AI Girlfriends Industry Index.
Paying users continued to show substantially higher engagement than free-tier users, with paying-user CEI approximately 12 to 18 points above the free-tier figure. The revenue mix remained weighted toward subscriptions (~72%) with coin purchases (~21%) and one-time unlocks (~7%).
The Monetisation Success Score (MSS), the 90-day paid conversion rate, was 40% in September 2026.
Product Trends in September 2026
Voice Adoption Rate reached 52% of paid subscribers in September 2026. R30 was 45%. ADCL was " 27.3 minutes. Image generation adoption continued to climb among paying subscribers, persona customization " remained the most-adopted paid feature, and memory usage held its position as the strongest single retention signal in " the series. All product metrics remained at or near series highs.
Monetisation in September 2026
Conversion-to-Paid Rate reached 20.2% and ARPU reached $27.02 per paying user. The revenue mix stayed weighted toward subscriptions, with coin purchases and one-time unlocks making up the remainder.
Demographics and Geography
Demographic composition held near the updated baseline: users aged 18 to 24 at ~28%, 25 to 34 at ~31%, 35 and older at ~41%. Geographic split: North America 36%, Europe 26%, Asia-Pacific 28%, other 10%. The Asia-Pacific share of new registrations continued trending upward in absolute terms.
The Month’s Defining Shift
The defining shift in September 2026 is monetisation breadth and depth moving together, CPR at 20.2% and ARPU at $27.02. No single number tells the whole story, but the direction is consistent with every edition since the January 2025 baseline: the category is growing in size and deepening in engagement at the same time.
What We Are Watching in October 2026
- Series continuation: the October 2026 edition will extend the trendlines for all tracked metrics with another month of first-party data.
- MAU trajectory: whether the growth rate holds near 3.9% or continues to moderate as the base grows.
- Voice threshold: with VAR at 52% of paid subscribers, whether October 2026 moves it closer to the next round-number milestone.
Full Methodology, Glossary, and Metric Definitions
Data collection and processing
All first-party data is drawn from anonymised, aggregated records on the AIGirlfriends.AI platform. No session content is retained or analyzed.
Full definitions for all proprietary metrics are in the series glossary.
How to Cite This Report
APA 7: Taylor, J. (2026). AI girlfriend industry report, September 2026. AIGirlfriends.AI. https://aigirlfriends.ai/blog/ai-girlfriend-industry-report-september-2026
Journalist copy-paste: …according to the AI Girlfriends Industry Index (September 2026 edition, AIGirlfriends.AI).
Series hub: aigirlfriends.ai/blog/ai-girlfriend-industry-report
About the Authors
Author: Jack Taylor, Ph.D., Head of Research, AI Girlfriends Industry Index.
Reviewed by: Jonathan Brenner, Lead Research Editor, AIGirlfriends.AI.
Press: [email protected]
Disclosure: AIGirlfriends.AI operates a consumer AI companion product. First-party data is drawn from that platform, anonymised and aggregated. This disclosure appears in every edition.