# Claude vs You.com: who uses which

On usedby, 170 companies use Claude and 10 use You.com. 2 companies use both, including Harvey and Windsurf. Counts include every proof level, job-post signals included; each company keeps its proof level on each side. Latest check 2026-10-18: 152 of 180 public lines checked.

## Side by side

|  | [Claude](https://www.usedby.ai/tools/claude.md) | [You.com](https://www.usedby.ai/tools/you-com.md) |
|---|---|---|
| Public customers | 170 | 10 |
| Confirmed | 85 | 0 |
| Observed | 46 | 10 |
| Signals (job posts) | 39 | 0 |
| Top industries of customers (every proof level) | DevTools & Infrastructure (30), Artificial Intelligence (26), Fintech & Payments (16) | Data & Analytics (2), Artificial Intelligence (1), DevTools & Infrastructure (1) |
| Category | AI assistants | AI search & research |
| Security | SOC 2 Type II, ISO 27001, ISO 42001, HIPAA, FedRAMP, Cyber Essentials ([trust.anthropic.com](https://trust.anthropic.com/), checked 2026-10-04) | — |
| Data processing terms | A data processing agreement is available. ([trust.anthropic.com](https://trust.anthropic.com/), checked 2026-10-04) | A data processing agreement is available. ([trust.you.com](https://trust.you.com/), checked 2026-10-08) |
| Your data | — | Not used to train models by default. ([you.com](https://you.com/privacy), checked 2026-10-08) |

## Companies that use both

Every proof level counts; the proof level of each side is shown, strongest proofs first. The first public proof is not an adoption date.

| Company | Proof, Claude | Proof, You.com | First public proof, Claude | First public proof, You.com |
|---|---|---|---|---|
| [Harvey](https://www.usedby.ai/companies/harvey.md) | Confirmed | Observed | On or before October 2026 | On or before April 2026 |
| [Windsurf](https://www.usedby.ai/companies/windsurf.md) | Confirmed | Observed | On or before October 2026 | On or before April 2026 |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Claude: [Carvana](https://www.usedby.ai/case-studies/carvana-claude.md): **65%**: “Claude Tag reduced the time required to reach an answer by 65%” (captured by usedby 2026-10-12)
- Claude: [Figma](https://www.usedby.ai/case-studies/figma-claude.md): **five minutes**: “I prototyped a new product flow with Figma Make in five minutes.” (captured by usedby 2026-10-12)

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Source: https://www.usedby.ai/compare/claude-vs-you-com · How we check: https://www.usedby.ai/methodology