Attention vs CallMerlin
Attention
attention.com
CallMerlin
callmerlin.appSide by side
| Figure | Attention | CallMerlin |
|---|---|---|
| Price from | — | €55/mo |
| Free plan | — | — |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | — | Yes |
| macOS | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| Plans published | 1 | 4 |
| Spec score · Sales Follow-Up Software | 7.5 (#29) | 8.6 (#6) |
| Company | Attention says it was founded at the end of 2021 and is headquartered in New York. | CallMerlin identifies Small Guy B.V. as its operator and says it is based in the Netherlands. |
| Compliance | Attention states that it is SOC 2 Type II and HIPAA compliant and maintains a Business Associate Agreement for healthcare and other regulated customers. | CallMerlin says it is listed in the CSA STAR registries and clarifies that the listings are transparency disclosures, not third-party audit certificates; ISO 27001 and SOC 2 are planned and not yet certified. |
| Headquarters | New York, United States | Breda, Netherlands |
| Integrations | Attention's integrations page lists more than 200 integrations; it names HubSpot and Salesforce among its CRM integrations. | The integrations page lists 96 native deep integrations and says 900+ are available through managed connectors. |
| Security | Attention says data is encrypted in transit using TLS 1.2 and TLS 1.3, encrypted at rest, and accessible only to authorized employees with access logged. | The Trust Center states that credentials use AES-256-GCM encryption, data is protected in transit by TLS, and access uses PIN plus 2FA. |
Plans
CallMerlin
- Starter€55 a month
- Professional€109 a month
- Business€219 a month
- EnterprisePriced on request
In their own words
CallMerlin
CallMerlin describes itself as an AI Chief of Staff that connects to business systems and can be used through phone, chat, widget, desktop, mobile, Slack and Teams. Its workflows can span multiple systems, respond to triggers and include an analysis step with auto-inject. Reads can happen immediately, while writes, emails and payment files wait for approval unless direct execution is enabled. The integrations page lists 96 native deep integrations and says 900+ are available through managed connectors, with examples including HubSpot, Salesforce, Slack, Moneybird, Microsoft 365, Gmail, Stripe, Shopify and Zoom. CallMerlin says each teammate has an individual PIN and permissions are enforced server-side. Credentials use AES-256-GCM encryption, data in transit is protected by TLS, and access uses PIN plus 2FA. Call transcripts and AI summaries are kept for at most 90 days by default; audio is not retained. Starter costs €55/mo (annual), and a 7-day trial is offered; there is no free plan. Android is in closed alpha and the iOS App Store listing is coming soon.