# Slack: how AI models rank it, September 2026

HR AI Recommendation Index, September 2026 Edition. Named in 27 judge labels across 5 categories by 11 of 12 models. Page: https://hr-ai-index.com/vendors/slack/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Internal communications and intranet | 8% | 5 | 8% | 12 |
| Frontline employee apps | 2% | 10 | 55% | 11 |
| Internal talent marketplace | 0% | 34 | 0% | 2 |
| Employee engagement surveys | 0% | 64 | 100% | 1 |
| Org charts and org design | 0% | 57 | 0% | 1 |

## What the models said for it

- "However, if you are hiring younger talent or have a "customer-experience first" sales culture, stick with Slack." (Qwen 3.7 Flash, Internal communications)
- "Slack is the better choice if your company runs on Google Workspace or is more tech-forward" (DeepSeek V4 Flash, Internal communications)
- "For most mid-sized B2B companies, Slack or Microsoft Teams are the safest choices" (Claude Haiku 4.5, Internal communications)
- "I'd recommend Slack or Microsoft Teams for most mid-sized B2B companies." (GLM 4.7 FlashX, Internal communications)

## And against it

- "General tools to avoid for pure frontline: Slack/Teams ... low adoption among deskless workers" (Grok 4.1 Fast, Frontline employee apps)
- "Slack / Teams are strong for messaging and collaboration but limited in employee engagement features, governance, and frontline‑specific workflows." (GLM 4.7 FlashX, Frontline employee apps)
- "Office tools like Slack or Microsoft Teams often fail on the frontline because they assume every worker has a laptop, corporate email" (Gemini 3.5 Flash, Frontline employee apps)
- "Slack can be poor if you need structured engagement or HR insights, since it is mainly a messaging tool.[2]" (Perplexity Sonar, Employee engagement surv)

## Record

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