# Plain: how AI models rank it, October 2026

GTM AI Recommendation Index, October 2026 Edition. Named in 13 judge labels across 3 categories by 5 of 14 models. Page: https://gtm-ai-index.com/vendors/plain/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Customer support and helpdesk | 3% | 6 | 0% | 9 |
| In-app messaging and customer communications | 2% | 17 | 0% | 2 |
| Knowledge base and self-service | 0% | 29 | 0% | 2 |

## What the models said for it

- "Choose TeamSupport or Plain if you want a B2B-native experience with account-centric workflows and faster implementation." (Muse Glimmer 30B, Helpdesk)
- "Plain - known for its speed and extensibility, making it a good choice for mid-market teams." (Llama 4 Maverick, Helpdesk)
- "the most balanced recommendation is Plain for product messaging" (Perplexity Sonar, In-app messaging)
- "described as the best overall knowledge and support platform" (Muse Glimmer 30B, Knowledge base)

## Movement since September 2026

Floor: 11 points of share, measured on the calibration repeat. A larger change is movement; a smaller one is noise.

- Knowledge base and self-service: 4% to 0%, −4. Inside the floor by 7 points · rank 10 → 29 of 88.
- In-app messaging and customer communications: 0% to 2%, +2. New · not ranked in September 2026 · rank 17 of 105.
- Customer support and helpdesk: 2% to 3%, ±0. Inside the floor by 11 points · rank 7 → 6 of 55.

## In its own words

What Plain's own pages state, read 2026-09-28. Stated by the vendor, not checked by the index.

- Positioning: Plain is the AI support stack built for B2B teams. (https://plain.com/)
- For: B2B teams (https://plain.com/)
- Price stated: Foundation at $35/month, Horizon at $299/month, and custom Frontier. (https://www.plain.com/pricing)
- Starting price: 35 (https://www.plain.com/pricing)
- Free plan or trial: Start for free (https://plain.com/)
- Certifications: SOC2 Type II Report
- Customers named: Granola, Raycast, Stytch, Sanity, Tinybird, Buildkite, Vercel, Cursor

## What it publishes

Every page plain.com exposes, read 2026-09-29: 575 addresses. By kind, pages and the last 90 days:

- blog: 127 pages, 14 in the last 90 days, latest 2026-09-22
- case study: 36 pages, 36 in the last 90 days, latest 2026-09-29
- conference or event: 18 pages, 10 in the last 90 days, latest 2026-09-29
- comparison: 17 pages, 9 in the last 90 days, latest 2026-09-29
- template or tool: 2 pages, 1 in the last 90 days, latest 2026-09-29
- glossary or explainer: 2 pages, 0 in the last 90 days, latest 2026-06-13
- Recent: 2026-09-29 template or tool: Plain - Slack Support Cost Calculator https://www.plain.com/community/slack-support-calculator
- Recent: 2026-09-29 comparison: Pylon https://www.plain.com/compare/pylon
- Recent: 2026-09-29 comparison: Zendesk https://www.plain.com/compare/zendesk
- Recent: 2026-09-29 comparison: Fin https://www.plain.com/compare/fin
- Recent: 2026-09-29 comparison: Intercom https://www.plain.com/compare/intercom
- Recent: 2026-09-29 case study: Plain — How n8n built AI-first support that handles 60% of tickets automatically https://www.plain.com/customers/n8n

## 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, October 2026 Edition, gtm-ai-index.com.