Explainable lead scoring your sales team will actually use.

Kenbun (見聞) is Japanese for "perception through seeing and hearing", gaining knowledge through direct observation. That maps to what the product does: sensing buyer intent signals from what prospects are reading, clicking, and engaging with, before those signals become obvious to everyone.

Usually because they can't explain why a lead got its score. When a score is a black box, reps fall back on gut feel and ignore it. kenbun makes the reasoning visible on every lead, so the score is something your sales team can actually check and trust.

Yes. One click shows every event that contributed to the score, with timestamps and point values. No black box. You can explain any score to anyone in 30 seconds.

6sense runs $60K-$300K/year. MadKudu starts at $1,000/month. We price by volume: $199/mo (15k leads), $349 (50k), $599 (150k), $999 (500k), $1,999 (1.5M). Same explainability, transparent tiers, no six-figure contracts.

Clay is excellent for enrichment, list building, and GTM automation. You can build a lead scoring workflow inside it, but that is a credit-metered table you design and maintain yourself, and the reason behind each score is an AI rationale you pay credits to regenerate, not a persistent audit trail in HubSpot. If scoring your inbound HubSpot leads is the actual job, kenbun is the scoring layer: flat $199 to $1,999/mo by volume, every point traceable, real-time Slack alerts. Use Clay for enrichment, kenbun for the scoring. They work well together.

HubSpot's Modern Lead Scoring (Aug 2025) handles Fit and Engagement separately, but Combined scoring is Enterprise-only (~$3,600/mo). It doesn't ship native Slack alerts on score thresholds, and decay is group-level only, not per-event half-life. HubSpot shows a score history panel: a timeline you read through to reconstruct why a lead got its score. kenbun shows the score's live composition at a glance, with decay already applied, so a rep sees what the number is made of right now without scrolling a log. We add that, plus native Slack alerts, from $199/mo.

Einstein Lead Scoring shows top contributing factors, but the ML is still opaque enough that sales teams routinely ignore it. Pardot/Account Engagement starts at $1,250/mo and the UX is dated. Data Cloud is enterprise-tier with credit-based pricing. kenbun is HubSpot-native today; Salesforce support is on our roadmap.

Koala was acquired by Cursor and shut down September 30, 2025. We're building the Slack-native, real-time scoring experience their customers loved, at a price point that makes sense for growing teams.

kenbun works best with HubSpot (full sync available), but you can start standalone with CSV imports and our tracking snippet.

Scores update in real-time. Slack notifications fire within seconds of the triggering event. Not hours, not "next batch run."