# Attio vs Clay: who uses which

On usedby, 20 companies use Attio and 48 use Clay. 1 company uses both, including Legora. Counts include every proof level, job-post signals included. Companies named on both have a confirmed or observed line on each side. Latest check 2026-10-05: 65 of 68 public lines checked.

## Side by side

|  | [Attio](https://www.usedby.ai/tools/attio.md) | [Clay](https://www.usedby.ai/tools/clay.md) |
|---|---|---|
| Public customers | 20 | 48 |
| Confirmed | 8 | 31 |
| Observed | 12 | 17 |
| Signals (job posts) | 0 | 0 |
| Top industries of customers | DevTools & Infrastructure (2), Investment & VC (2), Artificial Intelligence (1) | Artificial Intelligence (7), Marketing Tech (7), DevTools & Infrastructure (5) |
| Category | Sales Prospecting & Enrichment | Sales Prospecting & Enrichment |
| Security | ISO 27001 ([trust.attio.com](https://trust.attio.com/), checked 2026-10-04) | SOC 2 Type II, ISO 27001, ISO 42001 ([trust.clay.com](https://trust.clay.com/), checked 2026-10-04) |
| Data processing terms | A data processing agreement is available. ([attio.com](https://attio.com/legal/privacy), checked 2026-10-04) | A data processing agreement is available. ([trust.clay.com](https://trust.clay.com/), checked 2026-10-04) |
| Integrations | Typeform, Zapier, Slack, Aircall, Mailchimp, ChatGPT, Claude, Segment, Gmail, Outlook, Stripe, Zoom ([attio.com](https://attio.com/apps), checked 2026-10-04) | Salesforce, Salesloft, Outreach, Snowflake, HubSpot, Dynamics 365 CRM, Gong, Google BigQuery, Typeform, Smartlead.ai, Instantly, Semrush ([clay.com](https://www.clay.com/integrations), checked 2026-10-04) |
| Free trial | — | Free trial or free plan available. ([clay.com](https://www.clay.com/pricing), checked 2026-10-04) |
| Pricing | — | Free: Free; Launch: $167 mo; Growth: $446 mo; Enterprise: contact sales ([clay.com](https://www.clay.com/pricing), checked 2026-10-04) |

## Companies named on both

Confirmed or observed on each side.

| Company |
|---|
| [Legora](https://www.usedby.ai/companies/legora.md) |

## Published results

Reviewed stories only; usedby did not measure the figures.

- Attio: [Passionfroot](https://www.usedby.ai/case-studies/passionfroot-attio.md): **25%**: “generating an extra 25% in GMV per month, thanks to Attio” (captured by usedby 2026-10-02)
- Attio: [Taskrabbit](https://www.usedby.ai/case-studies/taskrabbit-attio.md): **90%**: “90% team adoption overnight, up from sub 50%” (captured by usedby 2026-10-02)
- Clay: [Pump](https://www.usedby.ai/case-studies/pump-clay.md): **6x faster**: “new reps were revenue-generating 6x faster than before Clay” (captured by usedby 2026-10-05)
- Clay: [Merge](https://www.usedby.ai/case-studies/merge-clay.md): **15%**: “a 15% increase in enterprise meetings booked” (captured by usedby 2026-10-05)

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Source: https://www.usedby.ai/compare/attio-vs-clay · How we check: https://www.usedby.ai/methodology