# Knowledge base and self-service for small business buyers: what AI models recommend, September 2026

GTM AI Recommendation Index, September 2026 Edition. Asked as "knowledge base software" and as "customer self-service help center tool", six framings each, to twelve models with search on, on behalf of a small B2B company. Page: https://gtm-ai-index.com/customer/knowledge-base-and-self-service/smb/

**Standing:** Notion leads with 38% of first choices; verdict contested. 42 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| # | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | Notion | 38% | 14% | 49 |
| 2 | Freshdesk | 12% | 7% | 15 |
| 3 | Slite | 10% | 4% | 27 |
| 4 | Help Scout | 10% | 0% | 21 |
| 5 | Zoho Desk | 7% | 0% | 11 |
| 6 | Confluence | 5% | 39% | 33 |
| 7 | Slab | 2% | 0% | 30 |
| 8 | Document360 | 2% | 38% | 34 |
| 9 | Nuclino | 0% | 0% | 25 |
| 10 | HelpDocs | 0% | 0% | 21 |
| 11 | BookStack | 0% | 14% | 14 |
| 12 | Tettra | 0% | 27% | 26 |

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: Notion; alternatives Document360, Freshdesk, Groove, HelpDocs
- GPT-5.4 mini: Notion; alternatives Document360, Slite
- Gemini 3.5 Flash: Document360; alternatives Guru, Help Scout, Notion, Plain
- Perplexity Sonar: Notion; alternatives HelpDocs, Plain, Pylon, Slab
- Grok 4.1 Fast: Notion; alternatives HelpDocs, Nuclino, ProProfs KB, Slab
- Mistral Small: Plain, Slite; alternatives Confluence, HappySupport, Help Scout, Helply
- DeepSeek V4 Flash: Slite; alternatives Document360, Notion, Nuclino, Slab
- Llama 4 Maverick: no first choice
- Qwen 3.7 Flash: Help Scout, Plain; alternatives Document360, Pylon
- Kimi K2: Notion, Slite; alternatives Confluence, Help Scout
- GLM 4.7 FlashX: Notion; alternatives Document360, Guru, Help Scout, Helply
- MiniMax M2.5: Plain; alternatives Help Scout, Pylon, Slite

## Sources the answers cite

19 of 72 answers came back with a source list, from 4 of 12 models. Sites named in the most answers:

- slite.com: 9 answers, 10 citations
- ferndesk.com: 9 answers, 9 citations
- knowledge-base.software: 6 answers, 9 citations
- learn.g2.com: 6 answers, 7 citations
- softr.io: 5 answers, 6 citations
- helply.com: 4 answers, 6 citations
- g2.com: 4 answers, 5 citations
- knowledgeowl.com: 4 answers, 5 citations

Pages named in the most answers:

- https://slite.com/learn/knowledge-base-softwares (9 answers)
- https://ferndesk.com/blog/best-knowledge-base-for-small-teams (8 answers)
- https://knowledge-base.software/comparison/small-businesses-knowledge-base-software (5 answers)
- https://assembly.com/blog/best-knowledge-base-software (4 answers)
- https://bolddesk.com/blogs/best-knowledge-base-software (4 answers)
- https://desk365.io/blog/best-knowledge-base-software (4 answers)
- https://learn.g2.com/best-knowledge-base-software (4 answers)
- https://peoplemanagingpeople.com/tools/best-knowledge-base-software (4 answers)
- https://softr.io/blog/best-knowledge-management-software (4 answers)
- https://featurebase.app/blog/best-knowledge-base-software (3 answers)

## Warned against

- Guru: 11 of 27 labels negative. "Requires a 10-seat minimum, sales-only model with custom quotes, and enterprise-style procurement" (GLM 4.7 FlashX, negative prompt)
- Helpjuice: 11 of 20 labels negative. "Starts at $249/month, which is prohibitively expensive for most small businesses" (GLM 4.7 FlashX, negative prompt)
- Confluence: 13 of 33 labels negative. "Overkill for small teams, complex macros intimidate non-technical users, expensive licensing" (GLM 4.7 FlashX, negative prompt)
- Document360: 13 of 34 labels negative. "Tools to Avoid or Be Cautious About ... Document360, Guru, Bloomfire ... custom quote-based pricing" (Kimi K2, negative prompt)

## Record

- Method: https://gtm-ai-index.com/methodology/
- Raw judge labels and full responses: https://gtm-ai-index.com/data/
- License: CC BY 4.0. Cite as GTM AI Recommendation Index, September 2026 Edition, gtm-ai-index.com.