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

Gane 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://www.gane.ai/index/gtm/customer/knowledge-base-and-self-service/2026-09/smb

This is the permanent record of the September 2026 Edition, published September 15, 2026 and superseded since. The current standing: https://www.gane.ai/index/gtm/customer/knowledge-base-and-self-service/smb/index.md

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

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [Notion](https://www.gane.ai/index/gtm/vendors/notion/index.md) | 38% | 14% | 49 |
| 2 | [Freshdesk](https://www.gane.ai/index/gtm/vendors/freshdesk/index.md) | 12% | 7% | 15 |
| 3 | [Slite](https://www.gane.ai/index/gtm/vendors/slite/index.md) | 10% | 4% | 27 |
| 4 | [Help Scout Docs](https://www.gane.ai/index/gtm/vendors/help-scout-docs/index.md) | 10% | 0% | 23 |
| 5 | [Zoho Desk](https://www.gane.ai/index/gtm/vendors/zoho-desk/index.md) | 7% | 0% | 11 |
| 7 | [Confluence](https://www.gane.ai/index/gtm/vendors/confluence/index.md) | 5% | 44% | 36 |
| 8 | [Slab](https://www.gane.ai/index/gtm/vendors/slab/index.md) | 2% | 0% | 30 |
| 10 | [Document360](https://www.gane.ai/index/gtm/vendors/document360/index.md) | 2% | 38% | 34 |
| 13 | [Nuclino](https://www.gane.ai/index/gtm/vendors/nuclino/index.md) | 0% | 0% | 25 |
| 14 | [HelpDocs](https://www.gane.ai/index/gtm/vendors/helpdocs/index.md) | 0% | 0% | 21 |
| 15 | [BookStack](https://www.gane.ai/index/gtm/vendors/bookstack/index.md) | 0% | 14% | 14 |
| 16 | [Tettra](https://www.gane.ai/index/gtm/vendors/tettra/index.md) | 0% | 27% | 26 |

Rank is by share of first choices among all 76 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

## 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 Docs, Notion, Plain
- Perplexity Sonar: Notion; alternatives HelpDocs, Plain, Pylon, Slab
- Grok 4.20: Notion; alternatives HelpDocs, Nuclino, ProProfs KB, Slab
- Mistral Small: Plain, Slite; alternatives Confluence, HappySupport, Help Scout Docs, Helply
- DeepSeek V4 Flash: Slite; alternatives Document360, Notion, Nuclino, Slab
- Llama 4 Maverick: no first choice
- Qwen 3.7 Flash: Help Scout Docs, Plain; alternatives Document360, Pylon
- Kimi K2: Notion, Slite; alternatives Confluence, Help Scout Docs
- GLM 4.7 FlashX: Notion; alternatives Document360, Guru, Help Scout Docs, Helply
- MiniMax M2.5: Plain; alternatives Help Scout Docs, 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:

- ferndesk.com: 11 answers, 11 citations
- slite.com: 10 answers, 11 citations
- plain.com: 7 answers, 7 citations
- knowledge-base.software: 6 answers, 9 citations
- learn.g2.com: 6 answers, 7 citations
- youtube.com: 5 answers, 14 citations
- softr.io: 5 answers, 6 citations
- featurebase.app: 5 answers, 5 citations

Pages named in the most answers:

- https://ferndesk.com/blog/best-knowledge-base-for-small-teams (10 answers)
- https://slite.com/learn/knowledge-base-softwares (10 answers)
- https://plain.com/blog/best-knowledge-base-software-12-top-tools-for-2025 (6 answers)
- https://knowledge-base.software/comparison/small-businesses-knowledge-base-software (5 answers)
- https://youtube.com/watch?v=L_ozQiDcz7s (5 answers)
- https://youtube.com/watch?v=pA6M5-9tiBU (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)

## 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: 16 of 36 labels negative. "Overkill for small teams, complex macros intimidate non-technical users, expensive licensing" (GLM 4.7 FlashX, negative prompt)
- Zendesk Guide: 14 of 25 labels negative. "Tools like some enterprise Zendesk or Salesforce Knowledge solutions can cost $300-500+/month for even small teams" (Mistral Small, negative prompt)

## Record

- Method: https://www.gane.ai/index/gtm/methodology
- License: CC BY 4.0. Cite as Gane Index, September 2026 Edition, www.gane.ai/index/gtm.