# Signal: how AI models rank it, October 2026

HR AI Recommendation Index, October 2026 Edition. Named in 8 judge labels across 2 categories by 7 of 14 models. Page: https://hr-ai-index.com/vendors/signal/

## Standing by category

| Category | Share | Rank | Negative rate | Labels |
|---|---|---|---|---|
| Frontline employee apps | 0% | 102 | 100% | 7 |
| Whistleblowing and investigations | 0% | 56 | 0% | 1 |

## What the models said for it

- "Signal - For encrypted communications (used by Associated Press and others)" (Kimi K2, Whistleblowing)

## And against it

- ""consumer-grade messaging apps like WhatsApp, Signal, and Telegram, as they are not suited for the workplace"" (Muse Glimmer 30B, Frontline employee apps)
- "WhatsApp, Signal, and Telegram for workplace use due to security risks and data leakage risks" (Llama 4 Maverick, Frontline employee apps)
- "consumer messaging apps like WhatsApp, Signal, Telegram... not suited to workplace use" (Perplexity Sonar, Frontline employee apps)
- "Why avoid: These are consumer-grade apps not designed for workplace security" (Kimi K2, Frontline employee apps)

## Movement since September 2026

Floor: 13 points of share, measured on the calibration repeat. A larger change is movement; a smaller one is noise.

- Frontline employee apps: 0% to 0%, ±0. Inside the floor by 13 points · rank 81 → 102 of 106.
- Whistleblowing and investigations: 0% to 0%, ±0. New · not ranked in September 2026 · rank 56 of 107.

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