Knock2 vs RB2B
Pricing last verified from each vendor's own site.
Verdict
Both identify website visitors at the person level. Knock2 is $165/mo billed annually ($199 monthly) for 600 contacts, up to $830/mo for 7,500. RB2B has a free plan, Starter $79/mo and Pro from $149/mo.
- Consider Knock2 if: You want account plus contact identification with MCP/API access and larger contact volumes.
- Consider RB2B if: You want a free plan and a cheaper paid tier.
Factual summary
- Both are listed under Visitor Identification.
- Lowest listed monthly price: Knock2 $165, RB2B $79 (plans and billing terms differ; check each vendor page).
- Knock2 lists channels RB2B does not: email.
This is a factual comparison drawn from vendor sites, not a recommendation. Which fits depends on your channels, volume and budget.
| Knock2 | RB2B | |
|---|---|---|
| Summary | Website visitor identification at the contact and account level, with integrations, automations and MCP/API access. | Website visitor identification pushed to Slack/CRM. |
| Starting price | From $165/mo | From $79/mo |
| Pricing details | Billed annually (2 months free): Startup $165/mo (600 contacts), Pro $290 (1,500), Growth $415 (2,500), Growth Plus $620 (5,000), Scale $830 (7,500); Startup is $199/mo month-to-month; 7-day free trial | Free; Starter $79/mo; Pro from $149/mo; Pro+ from $199/mo |
| Model | subscription | freemium |
| Free trial | Yes | Yes |
| Free plan | No | Yes |
| Channels | — | |
| Last verified | 2026-11-01 | 2026-10-28 |
FAQ
What is the difference between Knock2 and RB2B?
Both identify website visitors at the person level. Knock2 is $165/mo billed annually ($199 monthly) for 600 contacts, up to $830/mo for 7,500. RB2B has a free plan, Starter $79/mo and Pro from $149/mo.
Which is cheaper, Knock2 or RB2B?
RB2B has the lower listed entry price ($79 vs $165 per month), but plan limits and billing terms differ.
When should I choose Knock2 over RB2B?
Consider Knock2 if: You want account plus contact identification with MCP/API access and larger contact volumes. Consider RB2B if: You want a free plan and a cheaper paid tier.
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