Seamless.AI offers a large real-time contact database with broad B2B coverage. If you need high-volume enterprise contact lookups, it's a viable tool. If you value transparent pricing, flexible contracts, and SMB-specific data depth — ProspectUp is built differently.
Same prospect. Two different tools. Here's exactly what changes.
| Dimension | prospectup Recommended Built for US local-business prospecting | seamless.ai Database Designed for VP-targeting at large companies |
|---|---|---|
| 01 · Category Data depth | ||
| Total contacts indexedWhat sits inside the platform you're paying for | ✓ 13.7M US local businesses Every record indexed with operating signals, owner data, and a website audit. | ~ 1.3B+ contact records claimed Large B2B contact database with real-time verification. Strongest on enterprise contacts. |
| SMB coverageRestaurants, trades, healthcare, retail, services | ✓ Full depth — native Operating signals, owner data, web audit, tech stack, hours, photos — for every record. | ~ Contact-focused, not business-focused Finds people at companies. Less depth on local-business operating signals like Maps rank or review health. |
| Owner contact dataReaching the decision-maker at an SMB | ✓ Verified email + mobile for SMB owners Sub-5% bounce rate on owner emails. Direct dial phone where available. | ~ Real-time email and phone finder Finds contact info on demand. According to multiple reviews, accuracy varies — credits are consumed even for failed lookups. |
| Local business signalsReviews, GBP, hours, Maps rank, photos | ✓ Full coverage Star rating, review volume, response rate, Maps rank, GBP completeness. | ✗ Not indexed Seamless.AI focuses on B2B contact data and firmographics. No Maps, review, or local-business signals. |
| 02 · Category Search & filters | ||
| Natural-language search"Plumbers in Austin with no website" | ✓ Type a sentence Parsed into filters live; results returned in under a second. | ✗ Structured search only Filter by title, company, industry, headcount. No natural-language queries. |
| SMB-specific filtersNo-website, low-rating, specific CMS, booking platform | ✓ Native — 80+ dimensions PageSpeed, schema markup, CMS, booking platform, review velocity, hours. | ✗ Enterprise firmographic filters Revenue, headcount, industry, title-based targeting. Not designed for local-business operating signals. |
| Map-based searchDrawing a territory on a map | ✓ Built for field sales Lasso a neighborhood, route between leads, drop pins. | ✗ Not available No spatial search or territory mapping. |
| 03 · Category Outreach assets | ||
| AI-generated personalized assetsA unique asset for every prospect, not a template | ✓ 6 asset types per prospect Scan report, instant mockup, postcard, voice demo, social series, custom asset. | ✗ No asset generation Seamless.AI provides contact data. No per-prospect outreach asset creation. |
| Built-in outreachSending campaigns from the platform | ✓ Multi-channel sequences Email, SMS, postcard, and voicemail with auto-pause on reply or booking. | ~ Seamless Connect (launched 2026) Recently added email and calling inside the platform. Earlier versions required external sequencers. |
| Physical mail integrationPrinted postcards mailed for you | ✓ Lob — printed and mailed QR-tracked postcards built into the same sequence as email. | ✗ Not available Digital channels only. |
| 04 · Category Pricing & contracts | ||
| Pricing modelWhat you actually pay for | ✓ $1/lead — pay per saved record All 6 asset types included. No seat fees. Price listed publicly. | ✗ Starts at $147/mo (Basic, annual) Credit-based tiers. Pro and Enterprise require sales quotes. Credits consumed on every lookup, including failed ones. |
| Contract termsFlexibility to change or cancel | ✓ No contract — cancel anytime Monthly billing. No annual lock-in. No cancellation window. | ✗ Annual contracts with auto-renewal According to multiple G2 and Trustpilot reviewers, cancellation requires 60+ days notice before renewal or the contract auto-renews for another 12 months. |
| Free tierTry-before-you-buy | ✓ 50 leads free, no card Full product with all 6 asset types. No time limit. | ~ 50 lifetime credits free One-time allocation. No card required to start, but lifetime limit is quickly exhausted. |
| 05 · Summary Best for | ||
The ICP this tool was designed for | Agencies, vertical SaaS, and field sales teams who need SMB-focused data, transparent pricing, and proof assets. | Enterprise B2B sales teams who need high-volume real-time contact lookups and are comfortable with annual contracts. |
Seamless.AI pricing and feature data current as of May 2026 · last reviewed by the ProspectUp team.
Not "we're better at everything" — here are the four concrete problems agency owners and vertical-SaaS founders have called out, with what changes when you switch.
ProspectUp's pricing is on the website: $1 per lead, all enrichment and all 6 asset types included, no seat fees, no annual contract. Seamless.AI's Basic plan starts at $147/month (annual billing); Pro and Enterprise pricing require a sales conversation.
The difference goes beyond the dollar amount. Seamless.AI uses a credit-based system where credits are consumed on every lookup attempt — including lookups that return no valid result. Multiple third-party reviews report that the actual cost per usable lead is difficult to predict until you're inside the platform and seeing your own credit consumption patterns.
ProspectUp is $1 per lead, publicly listed, with no credits, no tiers, and no sales call required. What you see is what you pay.
See the pricing modelProspectUp bills monthly with no contract. Cancel anytime, no notice period, no penalty. Seamless.AI's paid plans are annual contracts that, according to multiple reviewers across G2, Trustpilot, and the Better Business Bureau, auto-renew if cancellation isn't submitted 60+ days before the renewal date.
This contract structure is the single most-cited complaint about Seamless.AI across review platforms. Multiple G2 reviewers report difficulty canceling, being transferred between departments when attempting to cancel, and charges continuing after submitting cancellation requests. For teams with variable prospecting volume, annual lock-in creates risk that monthly billing eliminates.
Compare contract termsSeamless.AI is fundamentally a contact finder — you search for people at companies, and it returns email addresses and phone numbers in real time. That's a valuable capability for enterprise sales teams running named-account plays.
For SMB prospecting, contact data is only part of the picture. You also need to know which businesses to target — and why. ProspectUp attaches 50+ operating signals per business: website audit scores, Maps rank, review velocity, tech stack, booking-system detection. These signals are how you identify which businesses are worth pitching and how you build proof for the first outreach. Seamless.AI provides the phone number; ProspectUp provides the reason they'll pick up.
See the enrichment pipelineIf you need high-volume real-time contact lookups across a broad B2B database — Seamless.AI's 1.3B+ contact records and real-time verification are genuine strengths. Their Chrome extension for enriching contacts while browsing LinkedIn is well-regarded, and the recently launched Seamless Connect brings prospecting and outreach into one flow. For enterprise sales teams doing volume B2B outreach, it's a capable tool.
If you value transparent pricing, flexible contracts, and SMB-specific business intelligence beyond contact data — Seamless.AI's model is misaligned with how agencies and SMB-focused teams work. That's where ProspectUp's approach wins.
Yes — CSV import. We'll match each contact against our 13.7M business index, attach the full ProspectUp enrichment (website audit, Maps signal, operating data), and generate 6 outreach assets per lead. Imports don't count against your free 50 leads.
Seamless.AI's Basic plan is $147/month (annual billing) with credit-based lookups. Credits are consumed on every search attempt, including failed ones, making the per-lead cost variable. ProspectUp is $1 per saved lead — all enrichment and assets included, predictable every month.
Seamless.AI's real-time verification is strong for enterprise B2B contacts. For SMB owner-operators, ProspectUp's data is deeper — we pull from primary sources (Google Business Profile, state registries, Yelp, Maps) and verify owner emails on save. The accuracy comparison depends on whether your ICP is enterprise contacts or local business owners.
No. ProspectUp is month-to-month with no contract, no cancellation window, and no auto-renewal clauses. Cancel anytime from your account settings.
No. Seamless.AI provides contact data and recently added basic email/calling via Seamless Connect. ProspectUp generates 6 branded asset types per prospect — scan reports, website mockups, postcards, voice demos, social posts, and custom assets — that serve as proof in your outreach.
Both integrate with major CRMs (Salesforce, HubSpot). Seamless.AI has mature enterprise CRM integrations, including a Salesforce-native app. ProspectUp integrates with HubSpot, Salesforce, Pipedrive, Close, and Zapier. For most agency and SMB-focused teams, both tools cover the integration needs.
Try ProspectUp free. $1 per lead, publicly listed. No annual lock-in, no auto-renewal clauses, no 60-day cancellation windows. See why teams switch.
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