How Concentrated Are AI Software Recommendations? Four-Market Study — October 2026
A RecommendationIndex study measures how much of AI software recommendation activity goes to the three most frequently recommended products across four markets.
The study covers 20 exact prompts, four recorded AI systems, 80 completed evaluations, 388 observations, 353 recommendation rows, 35 non-recommended mentions, and zero attached citation records.
Supported findings
- Across the four complete waves, the three most frequently recommended resolved company IDs accounted for between 41.3% and 53.9% of recommendation rows.
- Email Marketing had the highest top-three concentration: ActiveCampaign, Klaviyo, and Mailchimp accounted for 48 of 89 recommendation rows (53.9%).
- Help Desk Software had the lowest top-three concentration: Zendesk, Freshdesk, and Help Scout accounted for 31 of 75 recommendation rows (41.3%).
- Project Management’s top three—Asana, Monday.com, and ClickUp—accounted for exactly half of its 96 recommendation rows.
- CRM’s top three—Microsoft Dynamics 365, Zoho CRM, and HubSpot—accounted for 42 of 93 recommendation rows (45.2%).
Cross-market concentration
| Market | Recommendations | Top-three share | HHI | Effective company count |
|---|
| CRM | 93 | 45.2% | 0.111111 | 9.000 |
| Project Management | 96 | 50.0% | 0.114149 | 8.760 |
| Email Marketing | 89 | 53.9% | 0.137230 | 7.287 |
| Help Desk Software | 75 | 41.3% | 0.087644 | 11.410 |
CRM prompts
- What are the best CRM software platforms for small businesses? Include recommended companies, rankings, and sources if available.
- What CRM software platforms have the best AI features and automation capabilities?
- What is the best CRM software for a mid-sized company?
- What are the best alternatives to Salesforce and HubSpot CRM? Compare leading CRM platforms.
- What are the best enterprise CRM software platforms? Compare leading providers and explain why they are recommended.
Project Management prompts
- What is the best project management software for a remote team?
- What are the best enterprise project management software platforms? Compare leading providers and explain why they are recommended.
- What project management software platforms have the strongest AI features and automation capabilities?
- What are the best project management software platforms for small teams? Compare leading options and explain why they are recommended.
- What are the best project management software platforms for businesses? Include recommended companies, rankings, and sources if available.
Email Marketing prompts
- What are the best email marketing platforms for ecommerce businesses?
- What are the best email marketing platforms for businesses? Include recommended companies and sources.
- What email marketing platforms have the strongest AI features and automation?
- What is the best email marketing software for a growing small business?
- Compare leading email marketing platforms for small and growing businesses. When is each platform appropriate, and what are the main reasons to choose one over another? Include recommended companies and sources if available.
Help Desk Software prompts
- What is the best help desk software for a small business with limited IT staff?
- Which help desk platform is best for an enterprise that needs omnichannel support, security, and compliance?
- What help desk software is fastest to implement for a growing SaaS support team?
- Which help desk tool has the strongest AI automation and knowledge-base features?
- What is the best-value help desk platform for an ecommerce business handling email, chat, and social support?
Limitations
- This is one cross-sectional wave per market, not a longitudinal trend.
- The CRM, Project Management, and Email Marketing waves were measured on October 23, 2026 UTC; Help Desk Software was measured on October 25, 2026 UTC.
- The four markets use different buyer prompts, so concentration differences cannot be attributed to market structure alone.
- Top-three recommendation concentration is not commercial market share, product quality, revenue concentration, customer adoption, or a PromptMarketMap endorsement.
- Only four AI systems were included, using the recorded model versions and retrieval behavior at measurement time.
- Recommendation-row frequency weights every recorded recommendation equally and does not incorporate rank, confidence, explanation quality, or buyer fit.
- Distinct RecommendationIndex IDs may represent related products or commercial families; no unsupported parent-company aggregation is performed.
- HHI and effective company count describe the distribution of recorded recommendation rows only and should not be interpreted using antitrust market-share thresholds.
- The snapshots contain zero attached citation records, so the study supports no citation-frequency or citation-quality findings.
- AI outputs can change with model updates, source availability, system instructions, and exact prompt wording.
Read the full research methodology
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