Factors.ai vs Lead Onion
An independent, review-free comparison compiled by the SaaSTracker editorial team. Both products are profiled in full, and neither can pay for placement here.
The short answer
Editorial assessmentLead Onion compared with Factors.ai
Factors.ai is the analytics and attribution heavyweight of this category, built for multi-touch attribution, LinkedIn ad measurement, and account intelligence. Lead Onion is a demand-generation platform rather than a measurement one: it tells you who to contact and helps you contact them, not which campaign deserves credit. Teams that need to justify marketing spend to a board should look at Factors.ai; teams that need more accounts in the pipeline this quarter should look at Lead Onion.
Choose Factors.ai if
B2B marketing teams that run meaningful paid media and need identification, intent, ad orchestration, and attribution to agree with each other, and growth-stage companies willing to start on the $199 Lite plan and grow into a real ABM platform rather than assembling four point solutions.
Choose Lead Onion if
Mid-sized B2B sales organisations that have already exhausted their own website traffic as a signal source, teams that want third-party category-wide intent and contact reveal on the same platform as visitor identification, and buyers who prefer every consumable priced explicitly rather than bundled into an opaque tier.
Side by side
13 attributes| Attribute | Factors.ai | Lead Onion |
|---|---|---|
| Category | Visitor ID | Visitor ID |
| Starting price | $199 per month (Lite) (free trial) | $500 per month (Starter) (14 days trial) |
| Pricing model | A self-serve entry plan priced monthly, then annual contracts priced on monthly tracked users, identified companies per month, and seats, with the upper tiers demo-gated. | Tiered monthly subscription with allowances for contact reveals, intent triggers, website lookups, and users, plus published per-unit add-on rates for every consumable. |
| Free plan | No | No |
| Free trial | Free trial on Lite with no credit card required and a stated two-minute setup | 14 days, self-serve, no credit card required |
| Best for | B2B marketing teams that run meaningful paid media and need identification, intent, ad orchestration, and attribution to agree with each other, and growth-stage companies willing to start on the $199 Lite plan and grow into a real ABM platform rather than assembling four point solutions. | Mid-sized B2B sales organisations that have already exhausted their own website traffic as a signal source, teams that want third-party category-wide intent and contact reveal on the same platform as visitor identification, and buyers who prefer every consumable priced explicitly rather than bundled into an opaque tier. |
| Setup time | The Lite plan claims roughly two minutes to install and start identifying, which is fair for the tracking script alone. The platform proper is a different matter: connecting CRM, ad accounts, product data, and G2, then building account lists, scoring models, and AdPilot audiences, is a multi-week project. | Under an hour for tracking and integrations, but the real setup is configuring intent triggers, which is both the product's core work and a billed line item. Budget a proper session on trigger design rather than treating it as an afterthought. |
| Learning curve | High relative to the rest of this category, and appropriately so. Factors assumes you understand ABM, multi-touch attribution, and B2B media buying. A team without a marketing operations capability will not extract the value that justifies the upper tiers, and should stay on Lite for identification only. | Moderate to high, and the highest in this category. Multi-source intent, trigger thresholds, reveal credit economics, and cadence design are four separate disciplines, and a team used to a simple visitor identification feed will find this a different kind of product. |
| Platforms | JavaScript tracking script for any website, Web application, Slack alerts, MCP connector for ChatGPT and Claude | Web application, JavaScript website tracking, CRM integrations |
| Compliance | SOC 2 Type II certified, GDPR compliant, CCPA compliant, PECR compliant | No published certifications, audits, or documented legal basis analysis |
| Founded | 2020 | 2020 |
| Headquarters | Wilmington, Delaware, United States, with engineering operations in Bangalore, India | Portstewart, Northern Ireland, United Kingdom |
| Ownership | Venture-backed | Part of the Zymplify group, a privately held buyer intent and marketing automation company founded in 2013 |
Strengths and limitations
Factors.ai
Strengths
- The highest published identification coverage in the category, achieved through a genuine mechanism: a waterfall across four to five providers rather than dependence on one identity graph.
- It does both company-level identification and US person-level de-anonymization in one platform, which almost nothing else here manages credibly.
- LinkedIn AdPilot's account-level frequency capping is a real B2B media control that stops a handful of large accounts consuming an entire budget.
- Google CAPI conversion feedback teaches the bidding algorithm what a pipeline-relevant account looks like, which is a materially better use of ad data than a conversion pixel.
Limitations
- The pricing jump from $199 a month to $6,000 a year is abrupt, with nothing in between and no self-serve path above Lite.
- The capabilities the platform is marketed on (predictive scoring, advanced ABM analytics, multi-channel ad synchronisation, enhanced attribution) start at the $20,000 Growth tier.
- The up to 75 percent identification claim is vendor-measured against a vendor-defined baseline, and a waterfall's cost and accuracy both depend on which providers fire, which is not disclosed.
- No EU data residency commitment is published, so European buyers with strict residency requirements should look at Snitcher, Leadfeeder, or Leadinfo instead despite the GDPR compliance statement.
Lead Onion
Strengths
- Aggregates intent from more than twenty third-party providers rather than reselling one source, which is a genuinely different and harder thing to build than reverse-IP lookup.
- Every consumable is published as a per-unit add-on rate, so the full cost of a programme can be modelled before signing rather than discovered afterwards.
- A 209 million-plus verified B2B contact database with direct dials and real-time email verification at reveal time, which reduces the bounce problem that static purchased lists create.
- Built-in cadences and CRM integration inherited from the Zymplify marketing automation lineage, so the platform runs from signal through to outreach without a second vendor.
Limitations
- A $500 monthly floor with no free plan puts it out of reach for most genuinely small businesses, and out of proportion for anyone whose requirement is website visitor identification alone.
- No published website identification match rate, so the one number that matters for the visitor ID use case is unavailable before the trial.
- The vendor's own materials quote the Growth tier at two different prices, $1,750 and $2,000, which is a basic transparency failure on the most important page of the site.
- No published opt-out mechanics and no disclosed data broker registrations, which is a serious gap for a platform aggregating third-party intent from twenty-plus sources and reselling hundreds of millions of contact records.
Pricing compared
Factors.ai
A self-serve entry plan priced monthly, then annual contracts priced on monthly tracked users, identified companies per month, and seats, with the upper tiers demo-gated.
- Lite$199
- Basic$6,000
- Growth$20,000
- EnterpriseFrom $30,000
Judged on the Lite plan alone, $199 a month for waterfall identification claiming up to 75 percent account coverage plus up to 40 percent US person-level de-anonymization is strong value, and it is the reason Factors belongs on a small-business list at all. Judged as the platform the marketing describes, this is a $20,000-a-year purchase and should be compared against 6sense and Demandbase rather than against Snitcher and Leadfeeder, where it looks competitively priced and considerably more modern. What it is not is a graceful ladder. There is nothing between $2,400 a year and $6,000 a year, and the capabilities most people want begin at $20,000. Start on Lite for the identification, but do not plan a budget assuming the rest of the platform arrives incrementally, because it does not.
Lead Onion
Tiered monthly subscription with allowances for contact reveals, intent triggers, website lookups, and users, plus published per-unit add-on rates for every consumable.
- Starter$500
- Growth$1,750
- Scale$3,000
- EnterprisePrice on application
Lead Onion is not competitive as a website visitor identification purchase and should not be evaluated as one. At $500 a month minimum you are paying five to twenty times what a dedicated company-level tool costs, and the website lookup line item on the price list tells you plainly that identification is a cent-per-unit side dish. The value case is the aggregation: twenty-plus intent sources, a 209 million contact database with real-time verification, configurable triggers, and cadences on one platform, replacing three or four separate subscriptions. Whether that is good value depends entirely on whether you would otherwise buy an intent data vendor, an enrichment vendor, and a sequencer separately, and on whether the intent signals prove real on your category, which no vendor claim can tell you. If your honest requirement is knowing which companies visit your website, buy Snitcher, Leadinfo, Salespanel, or Leadberry and save between $450 and $480 a month.
Editorial verdict on each
Factors.ai
Factors.ai is the most capable product in this category and the one whose pricing most rewards reading carefully. The identification layer is legitimately best-in-class: a waterfall across four to five providers producing up to 75 percent account coverage plus up to 40 percent US person-level de-anonymization is a stronger technical answer than any single-graph competitor gives, and at $199 a month on Lite it is available self-serve to a small business. Everything above it (G2 and Bombora intent, LinkedIn AdPilot with account-level frequency capping, Google CAPI feedback, multi-touch attribution, the Scout agent and MCP connector) is a genuine ABM platform that should be compared with 6sense and Demandbase, where it looks modern and well priced. But the ladder has no middle: $199 a month jumps to $6,000 a year, and the flagship capabilities begin at $20,000. Buy Lite if you want excellent identification cheaply. Buy Growth if you have the paid media spend and the marketing operations capability to use ad orchestration and attribution properly. Do not buy in between expecting the platform to arrive gradually, and if EU data residency is a requirement, look at Leadfeeder, Snitcher, or Leadinfo instead.
Read the full Factors.ai profileLead Onion
Lead Onion is a good product being evaluated in the wrong category, and it is worth saying so plainly. Its price list literally sells website lookups at a cent each as a side line to twenty-plus third-party intent sources, a 209 million-record contact database, and a cadence engine. If your requirement is knowing which companies visit your website, buy Snitcher, Leadinfo, Salespanel, or Leadberry and keep the other $450 a month. Where Lead Onion earns its $500 floor is for a mid-sized B2B team that has already worked its own traffic dry, wants market-wide intent rather than site-wide, and would otherwise buy an intent vendor, an enrichment vendor, and a sequencer separately. The published per-unit add-on rates make that programme genuinely modellable, which is rare. But go in with three things settled in writing: the real Growth tier price given the published inconsistency, the website identification match rate you measured yourself during the trial, and the legal basis and opt-out mechanism behind twenty third-party intent sources that the vendor currently does not publish at all.
Read the full Lead Onion profileFactors.ai profile last reviewed 2026-08-22; Lead Onion last reviewed 2026-08-22. Pricing is compiled from public sources and can change without notice. See our methodology.