Harmonic is a startup database built for investors: it finds companies at formation, tracks hiring, funding and growth, and runs an AI research agent on top. Ocean uses contextual intelligence to find your next deal, with the reason on every account.
Used by teams at
HarmonicFinding startups early, including ones that haven’t announced anything. A fit for investors and corporate development teams.
Harmonic is a startup intelligence platform. It says it tracks 35M+ to 40M companies and about 200M people, sourced from legal filings and dozens of public sources, so companies appear before public announcements.
Ranking companies by how closely they match your own customers, learned from your won and lost deals, for any buyer type.
Ocean is contextual intelligence for go-to-market. It reads what every company actually does from its own website, learns what good looks like from your closed-won and closed-lost deals, and ranks your whole market against it, with the reason behind each score. The ranked accounts arrive in your CRM, your rep queue or your AI agents.
What buyers weigh, grouped by the job each part does. A light blue background marks the stronger side.
| Topic | Ocean | Harmonic |
|---|---|---|
| Finding the right accounts | ||
| Lookalikes | Ocean is stronger here. Core of the product. Segments and models learned from your won and lost CRM deals. | Finds startups by filters such as funding, stage, hiring and founder background, and runs thesis searches through Scout. It doesn’t describe finding companies that resemble your customers. |
| Learns your ICP from won and lost deals | Ocean is stronger here. Learned automatically from your won and lost deals. | Ranks results by relevance scores based on your preferences and history, and lets you map CRM stages into the app. It doesn’t describe learning fit from your won and lost deals. |
| The reason behind each account | Ocean is stronger here. Segment, score, tier and matched signals on every account and every export. | Shows highlights on each company and generates a research report on what it’s building, who it competes with and why now. That explains the company, not why it fits your customers. |
| Coverage | Ocean is stronger here. Segments your whole market and shows win rate, deal size and cycle time for each segment. | Deepest on startups, from companies just incorporating to late-stage, and on the investors and funding around them. It’s not a whole-market database for sellers to mature companies. |
| Contacts and data | ||
| Contacts | Verified emails and direct phones from a waterfall across 16+ data sources. Charged only when a contact is found, and exports are free. | People records with work history, education and background filters for founders and operators. Reviewers describe contact data as thin and pair it with an enrichment vendor. |
| Startup formation and talent signals | Doesn’t track founders leaving to start something or companies at formation. It matches fit, not formation. | Catches companies at formation from legal filings and public sources, and tracks hiring, founder moves, stealth starts and funding as they happen. |
| Buying signals | Up-to-date signals built in-house from each company’s own teams, leaders, hiring and website. | For GTM teams, event signals on fundraises, key hires such as a first sales hire or a CFO, and growth milestones as timing for outreach. |
| Workflow and pricing | ||
| CRM sync | Two-way with HubSpot, Salesforce, Pipedrive and Attio. Reads your deals to learn, then writes scores, segments and signals back. | A native Affinity integration, other CRMs through Polytomic, Zapier or n8n, and a Chrome extension. No-code CRM sync is an add-on on API plans. |
| AI agents and MCP | MCP server, public API and a chat agent on the same data and lookalike engine. | A hosted MCP server for Claude, ChatGPT and other clients, a REST and GraphQL API, and Scout, an AI research agent in the console and Slack, with Scout in MCP listed as coming soon. |
| Security and privacy | SOC 2 Type II and GDPR, per Ocean’s own site. | Lists enterprise security and compliance on its console plan. We found no report named, so ask for it and how it sources people data. |
| Pricing | Two ways to buy: a flat-rate plan with credits included, or a custom plan built around your deals and credit volume. | Not published. Console, API and bulk data each route to “Get pricing”. |
Harmonic doesn’t publish prices. Its pricing page shows three lanes, and each ends in “Get pricing”.
Reviewers estimate a minimum in the low tens of thousands of dollars a year, often with a three-seat minimum and no free trial. None of those figures comes from Harmonic, so treat them as unverified. Its own pages also differ on size: the pricing table lists 40M companies and 200M people, and its FAQ says 35M+ and 195M+.
A flat-rate plan with credits included, or a custom plan built around your deals.
Contacts are charged only when one is found. Exports are free.
See Ocean pricingHarmonic shows which startups are forming, hiring and raising. Ocean shows which companies look like your customers, whatever their stage.
Choose Harmonic if Use both ifFive steps. Most sellers who target startups run Harmonic for events and add Ocean to decide which ones fit.
Export the companies from your Harmonic lists and saved searches, then run them through Ocean to see how many fit your closed-won pattern.
Find your console seats, any API or bulk plan, your add-ons and your renewal date.
Connect HubSpot, Salesforce, Pipedrive or Attio. Ocean reads your closed-won and closed-lost deals to learn what a good account looks like.
Ocean proposes segments and scores, with the reason on each. Correct anything that doesn’t match how you sell.
Scores, segments and matched signals go back to your CRM, or into Apollo, Instantly or Lemlist sequences.
Expect a quote that grows with seats, credits and add-ons, because the entry price is the smallest line; price your real volume.
Expect an accuracy claim, because vendors measure it on their own samples; test find and bounce rates on your own list.
Expect a headline database size, because counts come from its own records and not your market; ask for coverage on your list.
Expect a trust-center link or a request form, because reports sit behind a sales step; ask for the date and scope.
Ocean is better because it tells it like it is: contextual intelligence to find your next deal, with the reason on every account.
Start using OceanThe right alternative depends on what you use Harmonic for. Here’s what each is built for and where Ocean starts.
Crunchbase
Specter
Clay
ZoomInfo
ApolloShort answers on what Harmonic does, what it costs, how Ocean compares and what to check before you buy.
A startup intelligence platform that tracks tens of millions of companies and about 200M people from formation, with hiring, funding and founder signals, an AI research agent, an API, an MCP server and bulk delivery.
It doesn’t publish prices. Console, API and bulk data are each quoted after a demo. Reviewers estimate a minimum in the low tens of thousands of dollars a year, but none of those figures comes from Harmonic.
Venture and growth investors and corporate development teams first, plus GTM teams whose customers are startups. It isn’t built for broad account targeting across mature companies.
It ranks results by relevance to your preferences and history, but doesn’t describe learning fit from your won and lost deals. Ocean reads your CRM deals, learns the ICP and ranks every company against it.
Yes, a hosted MCP server for Claude, ChatGPT and other clients, alongside a REST and GraphQL API. Ocean has an MCP server and a public API on the same data and lookalike engine.
It has a native Affinity integration, and other CRMs connect through Polytomic, Zapier or n8n. Ocean has native two-way sync with HubSpot, Salesforce, Pipedrive and Attio.
It lists enterprise security and compliance on its console plan but names no report on its pricing page, so ask for it and how it sources people data.
Ocean reads what each company does from its own website, learns from your closed-won and closed-lost deals, and returns ranked matches with the reason on each one.
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