CB Insights and Harmonic both track private companies, but they target fundamentally different buyers.
CB Insights was designed for enterprise strategy teams at large organizations that need structured research outputs and curated analyst reports suited to board-level conversations. Harmonic was built for investors and deal teams who need to find companies that fit their mandates, or to do so before they’re visible to others.
Here, compare the features and strengths of each platform and which works best for certain types of teams, like VC and GTM.
CB Insights vs. Harmonic: At-a-glance comparison
What is Harmonic?
Harmonic is a startup discovery engine with proprietary data on more than 35 million companies and 195 million people. The platform serves venture capital firms, corporate development teams, and GTM teams selling into startups.
Harmonic was built around two data assets that work in combination: company intelligence and people intelligence. Tracking individuals across the full organizational chart, from junior-level talent to executives, enables investors to source founders before they have formed a company. They can monitor meaningful hires and evaluate teams by talent density in ways that they wouldn’t be able to with company-level data alone.
Unlike databases that rely solely on public sources, Harmonic also takes in data directly from founder submissions and second-party partners, including venture firms and all major accelerators. Harmonic receives a constant flow of portfolio updates from the world’s leading investors, giving it earlier and more accurate coverage of companies that have not yet appeared in public registries or press.
What is Scout?
Scout is Harmonic's AI agent. Its edge comes from being connected to Harmonic's proprietary private market data, giving it deeper knowledge of startups than general-purpose AI tools. Scout also searches across your firm's full network, surfacing warm introduction paths and flagging when a contact joins a relevant company. It can even tell you who to meet when traveling to a new city. Ask it a natural language question the way you'd ask an analyst, and get structured intelligence back.
What is CB Insights?
CB Insights is a predictive intelligence platform focused on private companies and emerging technology markets. The platform is positioned around corporate strategy and deal teams at large enterprises that want to analyze competitive dynamics and potential acquisition targets.
CB Insights tracks over 11 million companies and has built a suite of proprietary predictive models, including the Mosaic Score (a composite health metric for private companies) and exit probability estimates. These models aggregate signals into a score designed to help enterprise teams prioritize companies at scale.
The customer base skews toward Fortune 500 firms, Big 4 consulting practices, large banks, and pharmaceutical companies. CB Insights serves teams that need curated research reports and structured analytical outputs suitable for board-level strategy conversations.
Feature-by-feature breakdown
Data coverage
Harmonic tracks more than 35 million companies with consistent depth across the full company lifecycle, from stealth and seed through Series B and beyond. The database covers the same growth-stage and later-stage companies as traditional platforms, but goes further at stealth, pre-seed, and seed stages.
Unlike databases that rely solely on third-party sources, Harmonic takes in data directly from founder submissions and partners, including venture firms and all major accelerators, providing early coverage of companies that have not yet appeared in public registries or press. An Earlybird benchmark of 1,000 companies spanning stealth founders through growth stage found that traditional providers tracked around 75% of relevant signals. Harmonic tracked 98%. CB Insights houses over 11 million companies in its database and is strongest with later-stage private companies that have customer traction and funding histories. For teams focused on Series C+ companies with established market positions, CB Insights offers rich context, including revenue estimates and customer transcript data.
The gap between the two tools’ reach is most pronounced in fast-moving markets. For example, AI-native acquisition targets can be only a few years old by definition. If your mandate includes identifying companies building at the frontier, coverage at the earliest stages is where the platforms diverge most.
People data
Harmonic provides over 195 million people profiles spanning the full organizational chart. For corporate development teams evaluating acqui-hire opportunities, Harmonic's people data enables filtering by background and expertise in ways that executive-level contact data alone cannot support. For VCs, the same data makes it possible to identify exceptional founders before a company even exists. Scout can search all of this data with natural language queries, highlighting candidates from your network or tracking when a notable professional leaves a portfolio company.
CB Insights tracks key executives and management team contacts, but does not extend to operator and IC-level talent data.
AI and analytics capabilities
Both Harmonic and CB Insights have invested heavily in AI, with different design philosophies.
Harmonic's Scout is built around investor and deal team workflows. It handles thesis-driven market mapping and on-demand research through natural language queries. Scout draws on Harmonic's proprietary data to reduce hours of manual research to a single conversation. Scout can also generate a relevance score that features startups based on a pre-defined criteria or companies that users frequently interact with. Therefore, users do not have to build their own models to get predictive scores.
CB Insights offers ChatCBI for natural language queries across its dataset, plus structured AI agents designed for corporate strategy tasks, including SWOT analysis and acquisition target identification. CB Insights also provides proprietary scoring models that aggregate multiple signals into composite ratings.
Data freshness
Harmonic refreshes company and people data on a cohort-based cycle, with thousands of priority companies updated daily. CB Insights does not publicly disclose its refresh cadence, and user reviews have noted concerns about data timeliness.
For teams tracking fast-moving markets, data freshness has a direct effect on decision quality. A company that raised a seed round three months ago has a different headcount and potentially different leadership than what appears in a quarterly refresh. For GTM teams, having up-to-date information is essential to correctly timing outreach around buying signals like new funding or a key hire.
Harmonic vs. CB Insights: Which platform is right for your team?
For VCs and investors
Harmonic is the stronger fit. Early-stage companies likely to generate outsized returns often have no public footprint yet. Harmonic's coverage reaches them before they appear elsewhere, and access to over 195 million people profiles makes it possible for users to track founders before they have incorporated. Scout also provides unparalleled research features for diving into markets, competitive landscaping, or building investment theses.
For corporate development
CB Insights was built for large enterprise strategy teams running structured M&A processes. If your corp dev team sits within a company that already uses CB Insights enterprise-wide and your targets are primarily mature private companies, its market taxonomies and predictive scoring serve that workflow well.
Harmonic's strength for corp dev goes beyond early-stage coverage. Scout gets teams up to speed on a new mandate in minutes, handling market mapping, target evaluation, and meeting preparation through natural language. People data across the full organizational chart supports acqui-hire evaluation and talent identification for portfolio companies.
And because Harmonic maintains the same depth at growth and later stages as at the earliest ones, corp dev teams are not choosing between breadth and granularity. For mandates that include AI-native targets, many of which are only a few years old and absent from traditional M&A databases, the coverage advantage compounds on top of that.
For GTM teams
Harmonic surfaces the signals that indicate when a company is ready to buy: a new funding round, a first sales hire, or a CFO addition. Harmonic's people data identifies the right contact at every level of an organization, so GTM teams can direct outreach to exactly the person they wish to target.
CB Insights does not position itself as a GTM prospecting tool.
Ready to see Harmonic's data for yourself? Book a demo to explore 35 million+ companies, 195 million+ people profiles, and Scout in action.
