Harmonic

6sense logo, Enterprise ABM and intent platform that scores accounts by predicted buying stage, priced by quote and built f

Harmonic

Harmonic

The startup database tuned for freshness: early rounds, stealth companies and hiring jumps, often days ahead of the bigger indexes, with the founders already attached.

What is

Harmonic

Harmonic is a startup database built on one bet: the interesting moment is before everyone knows. It tracks 35 million companies and 195 million people, and tunes the whole machine for freshness, early rounds, stealth companies still quiet on their own website, and the hiring jumps that give a raise away before the press release. For a funding workflow that freshness is the entire value. The outreach window after a round is measured in days, and a feed that runs days ahead of the big indexes hands you the window instead of the aftermath. The people layer is the second act. A round arriving with the founders, the new executives and their histories attached means the workflow can pick the right person and write the opener in the same pass, with no separate people search. The trade is opacity and tilt. Pricing lives behind a sales call, and the coverage leans hard toward venture-backed tech, so it shines exactly where your market overlaps with that world and thins out where it does not.

Integrations and the modern GTM stack

Harmonic hands its data over in three ways:

API

Enrichment and discovery on demand, with financing and investor data as an add-on and CRM sync available on top.

Bulk data

Weekly-refreshed drops into S3, BigQuery or Snowflake, for teams that keep their data under their own roof.

Console and watchlists

The human surface: saved searches and watchlists whose changes flow out as the signals a workflow acts on.

Pro’s

Freshness is the product: early rounds, stealth companies and hiring jumps surface here days before the bigger indexes write them down.

The people layer runs deep, 195 million records, so the round arrives with the founders and operators already attached.

Watchlists turn a market into a feed: define who you care about once, and the changes come to you.

Bulk delivery straight into a warehouse suits teams that want the data under their own roof.

The AI search agent answers questions a filter interface cannot express.

Cons

No public pricing: every plan starts with a sales conversation, and budgeting starts with a guess.

Coverage tilts to venture-backed tech, so an old-economy market will find it thin.

Financing data on the API is an add-on rather than the default.

Younger than the incumbent indexes, and some markets show the shorter history.

Pricing

Console

Get pricing

  • Full database and AI search

  • Watchlists and CSV export

  • Enterprise security

API

Get pricing

  • Enrichment and discovery

  • Financing data add-on

  • CRM sync add-on

Bulk data

Get pricing

  • Weekly refreshed drops

  • S3, BigQuery, Snowflake

  • Financing add-on

How it fits your stack

Diagram showing how 6sense fits into a GTM stack: your crm (Salesforce, HubSpot), website traffic (RB2B, Leadinfo) feed into 6sense, and its output flows to ad targeting (Google Ads, Meta Ads), your crm (Salesforce, HubSpot), rep alerts (Slack).

At a glance

35 million company records

195 million people records

Tuned for freshness on early rounds

Stealth and pre-announcement signals

Headcount and hiring-jump tracking

AI search agent over the database

API with CRM sync add-on

Bulk delivery to S3, BigQuery, Snowflake

Read some of our client stories

Real builds for real clients: what we set up, and what it changed for their pipeline.

Real builds for real clients: what we set up, and what it changed for their pipeline.

Ready to get started?

Let us show you how this tool fits into your GTM strategy and workflow.

Let us show you how this tool fits into your GTM strategy and workflow.

Book a call with our team to discuss how this workflow fits your sales process and timeline.

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© 2026 Nebor. All rights reserved.

© 2026 Nebor. All rights reserved.

© 2026 Nebor. All rights reserved.

© 2026 Nebor. All rights reserved.