Leadspace is a data platform that scores fit against a profile you set. Ocean learns the profile from your won and lost deals and ranks your whole market against it.
Used by teams at
LeadspaceOne data layer for enrichment, routing and fit scoring.
Leadspace is a B2B data platform that calls itself a GTM Data Intelligence Cloud. It unifies account, contact and signal data, scores ICP fit and pushes the results into your CRM. It also offers Sidekick, a free Chrome extension for reps, and an MCP server.
Learning your ICP from your own deals, then ranking every account with the reason shown.
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 green check marks the stronger side.
| Topic | Ocean.io logo Ocean | Leadspace |
|---|---|---|
| Finding the right accounts | ||
| Lookalikes from your closed-won deals | Ocean is stronger here. Core of the product. Segments and models learned from your won and lost CRM deals. | Lookalikes of the people and accounts a rep picks as the anchor. |
| The reason behind each account | Ocean is stronger here. Segment, score, tier and matched signals on every account and every export. | An ICP fit score in plain language, with the reason, on the people a rep views. |
| How it understands a company | Ocean is stronger here. Reads what each company does from its own website. | Firmographics, signals and technology data across 100+ categories. |
| Market sizing and segments | Ocean is stronger here. Segments your whole market and shows win rate, deal size and cycle time for each segment. | Segment building, with territory and TAM planning as listed use cases. |
| Buying committees | Roles learned from your won and lost deals, plus who fills them at each target account. | Buying committee mapping for the accounts a rep opens. |
| 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. | Verified contact data through Sidekick, with job change alerts. |
| Company data | 85M+ companies, built from the open web. | Quotes 300M+ person profiles on its homepage and a different, larger count on its Sidekick page. |
| Buying signals | Up-to-date signals built in-house from each company’s own teams, leaders, hiring and website. | Real-time signals such as job changes and buying intent. |
| 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. | One-click push to Salesforce, HubSpot and Microsoft Dynamics from Sidekick. |
| AI agents and MCP | Ocean is stronger here. MCP server, public API and a chat agent on the same data and lookalike engine. | An MCP server and a Sidekick assistant. AI agents are listed as coming soon. |
| Pricing | Ocean is stronger here. Two ways to buy: a flat-rate plan with credits included, or a custom plan built around your deals and credit volume. | Free to start with Sidekick. The platform is sold by quote, and its pages show no price. |
Reviewers rate it well, mostly for enrichment and scoring. The complaints are about matching and flexibility.
4.3 out of 5
Leadspace’s average on G2
The rating and the themes are from G2, which summarizes the themes itself.
Leadspace has a free entry point and a platform sold by quote. It publishes no price for the platform.
Leadspace added a free entry point with Sidekick and an MCP server, next to its enterprise contract. It lists AI agents as coming soon.
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 pricingBoth score fit. They differ in who sets the profile and what the score covers.
Choose Leadspace if Ocean.io logo Already on Leadspace?Five steps, working back from your renewal date.
Find the renewal date and the notice period in your Leadspace agreement. Everything else works back from that date.
Export your scored accounts, the audience your fit score uses and the CRM fields Leadspace writes, so you can compare them with Ocean.
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.
The right alternative depends on what you use Leadspace for. Here’s what each is built for and where Ocean starts.
KeyplayBuilt for Teams that want ICP scores they can inspect and backtest, now part of Inflection.
Where Ocean starts Ocean learns from your won and lost deals, covers any industry and finds the contacts too.
LandbaseBuilt for Teams that want natural-language audience search and outreach from one AI platform.
Where Ocean starts Ocean learns from your own closed-won deals and leaves outreach to the tools you already use.
DiscoLikeBuilt for Teams that find every company in a market, then check ICP fit, signals and contacts.
Where Ocean starts Ocean learns what a good account looks like from your closed-won deals, then ranks the whole market against it.
ExploriumBuilt for Teams and AI agents that need a B2B data foundation for go-to-market.
Where Ocean starts Ocean ships the ranking itself, learned from your deals, instead of a data layer you build on.
DemandbaseBuilt for Enterprise ABM programs that combine account data, intent and advertising.
Where Ocean starts Ocean ranks accounts from your own wins and sells no intent or advertising.
Short answers on Leadspace’s cost, what Sidekick does, how Ocean compares and what switching takes.
Leadspace publishes no price for its platform, which is sold by quote. Sidekick, its Chrome extension for reps, is free to start with no credit card.
Sidekick is free to start. Leadspace also says it costs 2.5 to 10 times less than ZoomInfo and Apollo, which is Leadspace’s own claim.
Yes. Leadspace offers an MCP server and lists AI agents as coming soon. Ocean has an MCP server and a public API on the same data and lookalike engine.
Sidekick shows an ICP fit score in plain language, with the reason, on the people a rep views. Its lookalikes start from people and accounts a rep picks.
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.
Leadspace scores against a profile that someone sets up. Ocean learns the profile from your won and lost deals, ranks whole accounts and shows the reason on each one.
Check your renewal date, export your scored accounts and the audience behind your fit score, connect your CRM so Ocean reads your won and lost deals, review the segments and scores Ocean proposes, then send scored accounts to your CRM or sequencer.
