# AI Search & Research: the tools companies use

178 companies on usedby use at least one of the 8 tools in this category with a public customer. Coveo leads with 44 companies. Counts are of companies on usedby, not of the whole market. Latest check 2026-10-08: 169 of 188 public lines checked.

> Answer engines and research assistants connected to the web

Family: [Research & Knowledge](https://www.usedby.ai/tools/category/research-knowledge.md)

## Ranking

Public customers count every public line, job-post signals included; ties share a rank.

| Rank | Tool | Public customers | Confirmed | Observed | Signals |
|---|---|---|---|---|---|
| 1 | [Coveo](https://www.usedby.ai/tools/coveo.md) | 44 | 40 | 4 | 0 |
| 2 | [Listen](https://www.usedby.ai/tools/listen.md) | 40 | 13 | 27 | 0 |
| 3 | [AlphaSense](https://www.usedby.ai/tools/alphasense.md) | 27 | 17 | 10 | 0 |
| 4 | [Perplexity](https://www.usedby.ai/tools/perplexity.md) | 26 | 12 | 14 | 0 |
| 5 | [Algolia](https://www.usedby.ai/tools/algolia.md) | 21 | 21 | 0 | 0 |
| 6 | [Hebbia](https://www.usedby.ai/tools/hebbia.md) | 14 | 7 | 7 | 0 |
| 7 | [You.com](https://www.usedby.ai/tools/you-com.md) | 10 | 1 | 9 | 0 |
| 8 | [Otio](https://www.usedby.ai/tools/otio.md) | 6 | 0 | 6 | 0 |

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Source: https://www.usedby.ai/tools/category/ai-search-research · How we check: https://www.usedby.ai/methodology