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Leadspace vs Seamless.AI

Leadspace

leadspace.com

Seamless.AI

seamless.ai

Side by side

FigureLeadspaceSeamless.AI
Price from$49/moFree
Free planYesYes
Free trial——
Open source——
WebYesYes
APIYesYes
Plans published44
Spec score · B2B Contact Data Providers8.9 (#6)8.4 (#27)
APIThe v4 Single Direct API uses HTTPS, JSON, bearer authentication and the apigw.leadspace.com endpoint.API key access is available as part of business plans, with plan eligibility and pricing details available from sales.
Free planThe Starter Sidekick plan is listed at $0 and includes 25 credits per day and 100 monthly CSV and CRM exports.Yes
IntegrationsThe listed ecosystem includes Salesforce, Marketo, HubSpot, Eloqua, Snowflake, BigQuery, REST API and an MCP Server.The integrations page lists Salesforce, HubSpot, Microsoft Dynamics, Outreach, Salesloft, Zoho CRM, Pipedrive, and other tools; availability and capabilities vary by integration and plan.
SecurityLeadspace states that integrations use authentication and encryption protocols, continuous monitoring, anomaly detection, audits and penetration testing.The company states it is GDPR and CCPA compliant, SOC 2 Type II compliant, and ISO 27001 certified.
SupportThe Sidekick Enterprise plan includes dedicated support.The company offers account support through its support contact page and a knowledge base.

Plans

Leadspace

  • StarterFree
  • Solo$49 a month
  • Pro$89 a month
  • EnterprisePriced on request

Leadspace pricing →

Seamless.AI

  • FreeFree
  • ProPrice not published
  • EnterprisePrice not published
  • FreeFree

Seamless.AI pricing →

In their own words

Leadspace

Leadspace provides real-time B2B data intelligence to help organizations identify buyers, prioritize opportunities, and execute go-to-market strategies. It combines CRM, marketing automation, product data, or data lakes with more than 30 embedded third-party B2B data sources. The platform creates unified company and contact profiles that can include buying centers, technographics, intent, and firmographics. AI captures firmographic, technographic, behavioral, and intent signals, then uses models to score fit and intent and prioritize leads. Enriched intelligence can be sent to CRMs, marketing automation platforms, data warehouses, ad platforms, and other go-to-market tools; named destinations include Salesforce, Marketo, HubSpot, Eloqua, Snowflake, and BigQuery. Leadspace is available through web, API, and extension access, with real-time profiles, identity resolution, audience activation, and data ingestion. Its listed security measures include encrypted storage and transfer, role-based access control, multi-layer authentication, and continuous vulnerability monitoring. Leadspace states compliance coverage for GDPR, CCPA, and SOC 2 Type II. Starter is free and includes one seat, 25 credits per day, and 100 exports per month. Solo costs $49 a month and Pro $89 a month, both billed annually, with one seat each. Enterprise pricing is custom.

Visit leadspace.com

Seamless.AI

Seamless.AI is a real-time search engine for B2B lead and contact prospecting, available on web, through an extension, and by API. It searches the public web to find and validate contact information; the listed contact database size is 1,300,000,000. Prospector uses dynamic filters to find verified emails and mobile phones for B2B buyers. Buyer Intent highlights prospects actively buying a product, while Job Changes tracks decision-makers changing jobs. CRM Enrich adds information to CRM records, and outreach features cover email, calls, and social channels, including email sending and an AI-powered phone dialer. The integrations page names Salesforce, HubSpot, Microsoft Dynamics, Outreach, Salesloft, Zoho CRM, and Pipedrive, with availability and capabilities varying by integration and plan. The free plan costs nothing for one user and 50 credits. Pro lists unlimited exports, while Enterprise lists unlimited users and exports; neither plan has a listed price. API key access is available on business plans, with eligibility and pricing details available from sales. The company says it refunds a credit automatically for an invalid email.

Visit seamless.ai