Lusha vs Seamless.AI (2026)
Lusha is the safer buy for teams that want a visible price and a data supplier with a strong compliance record, and Seamless.AI suits teams that want calling, email and API access bundled with a contact search engine and are ready to negotiate. Both sell business contact data on credits through a web app and a browser extension. Lusha prices every self serve plan, from Starter at $37.45 a month billed yearly to Premium at $299.95 for five seats. An email costs 1 credit and a phone number 5, and Lusha holds SOC 2 alongside six ISO certifications, ISO 42001 for AI management among them. Seamless.AI researches each contact on request rather than serving a stored row, quotes every paid plan, and adds email, calling and task management to every plan. One fact changes the risk picture. Seamless.AI feeds customer information into its own processes by default unless a customer asks to be excluded.
- You want to see the price before talking to sales, with self serve plans up to five seats.
- European prospects should be notified that their data is held and be able to act on it themselves.
- Procurement asks for SOC 2 plus ISO 27001, 27701 and 42001.
- Email, calling and task management should come with the data on every plan.
- Developers need an API and an assistant connection even on the free tier.
- Exports should be unlimited once a contact has been researched.
This comparison is published by GTM Tech Index, an independent research platform that compares go to market software vendors objectively. Lusha and Seamless.AI are each graded against the same capability taxonomy, from each vendor's own public materials, under the GTM Tech Index verification standard. No vendor pays for placement, and no vendor has reviewed this page. How this evidence is graded
Plain facts
| Lusha | Seamless.AI | |
|---|---|---|
| Primary category | Data & Enrichment | Data & Enrichment |
| Founded | Not published | Not published |
| Headquarters | Boston, MA | Not published |
| Website | www.lusha.com | seamless.ai |
Side by Side
| Axis | L Lusha |
S Seamless.AI |
|---|---|---|
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AI Capability
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| AI Centrality | ||
| Autonomy and Oversight Model | ||
| AI Disclosure and Model Transparency | ||
| Operational and Outcome Evidence | ||
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Compliance and Risk
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| Outreach Compliance Posture | ||
| Data Privacy Posture | ||
| Data Licensing and Provenance | ||
| Platform Terms Exposure | ||
| AI Safety and Data Stewardship | ||
| Recipient Disclosure and Authenticity | ||
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Integration and Deployment
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| Ecosystem and Integration Depth | ||
| Deployment Model and Data Residency | ||
| Security Certifications and Trust Center | ||
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Commercial and Operational
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| Commercial Transparency | ||
| Exit and Data Portability | ||
| Deliverability and Sending Discipline | ||
| Segment and Market Coverage | ||
The short version of each
Lusha
Lusha sells business contact and company data through a browser extension, a filtered web app and an API, on a credit model where an email costs 1 credit, a phone number 5 and a recorded call 8. It has grown from contact reveals into enrichment, buying signals, email sequences and conversation intelligence, all drawn from the same credit pool, and claims more than 300 million verified contacts. Plans run from free with 40 credits a month to Premium at $299.95 a month billed yearly for five seats, with Scale quoted and two way CRM sync reserved for it. Lusha is a registered California data broker, sends notices to European data subjects under legitimate interest and runs an MCP server for AI clients. The GTM Tech Index counts its certification set, SOC 2 with ISO 27001, 27017, 27018, 27701, 31700 and 42001, as the broadest in data and enrichment.
Source: GTM Tech Index, 2026
Seamless.AI
Built around a search engine that researches a named person on request, Seamless.AI sells business contact data on credits, with one credit returning an email address, a mobile number and supporting detail. Buying intent signals, job change tracking, record enrichment, workflow automation and a writing assistant are sold as add ons. An engagement layer for email, calling and tasks now comes with every plan. The browser extension surfaces contact details for professionals on any website, and an API and assistant connection are available on every tier, the free one included. Only the free tier carries figures, one user and 50 credits, and paid plans with unlimited exports are quoted. A SOC 2 attestation covers every tier. In the GTM Tech Index's data and enrichment coverage, Seamless.AI stands out for using customer information in its own processes by default, with an exclusion list as the way out.
Source: GTM Tech Index, 2026
Common questions
Is Lusha or Seamless.AI more accurate?
Neither product comes with a match rate, accuracy rate or bounce rate for its contacts. Lusha cites more than 300 million verified contacts, and reviewers report that its accuracy varies by region and contact type. Seamless.AI researches each contact on request, and outside commentary reports that a credit is spent whether or not the lookup returns usable data. Across the GTM Tech Index's data and enrichment coverage, that hit rate is the number the real cost per contact depends on, and neither vendor offers it.
How much do Lusha and Seamless.AI cost?
Lusha has a free plan with 40 credits a month. Starter is $37.45 a month billed yearly or $49.90 monthly for one seat, Pro $52.45 or $69.90 for two, and Premium $299.95 or $399.90 for five, with Scale quoted. An email costs 1 credit and a phone number 5. Seamless.AI has a free tier with one user and 50 credits, and its two paid tiers are quoted, with the second starting at 10,000 annual credits and its writing assistant, intent data and enrichment sold as extras. Graded by GTM Tech Index against seventeen capability axes from each vendor's own published materials, verified October 17, 2026. No vendor pays for placement.
Does Seamless.AI use my company's data?
By default, yes. Customer information feeds Seamless.AI's own processes unless a customer asks to be placed on an exclusion list, after which it is used only to provide the service. The product also takes connections to a user's email, professional network, CRM and social accounts, which the user can revoke. Graded by GTM Tech Index against seventeen capability axes from each vendor's own published materials, verified October 17, 2026. No vendor pays for placement.
Can I use Lusha or Seamless.AI to prospect in Europe?
Lusha relies on legitimate interest, sends notices to European data subjects when it holds their data, with a right to opt out, and runs a self serve privacy center for anyone in its database. Seamless.AI offers a request portal, a preference center and an exclusion list, but sends no notice to people whose details it holds. Under both, the customer stays responsible for its own outreach. Graded by GTM Tech Index against seventeen capability axes from each vendor's own published materials, verified October 17, 2026. No vendor pays for placement.
Do Lusha and Seamless.AI work with AI assistants?
Lusha runs its own MCP server, so Claude, ChatGPT and other MCP clients can query its contacts, companies and signals. Seamless.AI offers an assistant connection and an API on every tier, the free one included. Both run their enrichment, signals and writing tools on unnamed models. Graded by GTM Tech Index against seventeen capability axes from each vendor's own published materials, verified October 17, 2026. No vendor pays for placement.
Related comparisons
Other published head to head assessments involving these vendors or their closest peers. The full set for this category is on the Data & Enrichment page.
Both sell contacts from unnamed suppliers, with no match or accuracy rate attached. Lusha is a registered California data broker that relies on legitimate interest in Europe and processes data in the United States and Israel. Seamless.AI's state privacy policy allows sale of personal information to data brokers, including characteristics such as age or gender, and sharing for cross context behavioral advertising. Both browser extensions show contact details beside professional network profiles, and neither has a stated arrangement with that network. Both companies are independent.