Factors.ai vs Warmly
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 assessmentWarmly compared with Factors.ai
These two overlap more than any other pair here: both do company and US person-level identification, both layer Bombora and G2-style intent on top, both orchestrate LinkedIn and ad activation. The differences are entry point and centre of gravity. Factors has a self-serve Lite plan at $199 a month and its soul is measurement: waterfall identification claiming up to 75 percent account coverage, multi-touch attribution, and AdPilot for LinkedIn and Google. Warmly has no comparable entry point anymore and its soul is engagement: chat, video, sequences, and warm calling that act on the visit as it happens. A marketer who needs to prove what created pipeline should pick Factors, and can start for a couple of hundred dollars. A team that wants the website itself to start conversations should pick Warmly, and should budget five figures. Factors' identification numbers are also simply better on paper, which matters if coverage is the constraint.
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 Warmly if
B2B companies with meaningful United States inbound traffic, a five-figure annual budget for pipeline tooling, and a genuine intention to automate visitor engagement rather than just observe it: teams that want the chat, the sequences, the retargeting, and the alerts run by one platform instead of stitching four tools together.
Side by side
13 attributes| Attribute | Factors.ai | Warmly |
|---|---|---|
| Category | Visitor ID | Visitor ID |
| Starting price | $199 per month (Lite) (free trial) | $10,000 per year (AI Web-Deanonymization, annual contract) (free plan available) |
| 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. | Annual contracts around three agent-based products, metered by monthly credits with seats unlimited. Published list prices as of August 2026: AI Web-Deanonymization at $10,000 a year, Inbound Chat at $20,000 a year, and AI Inbound Autopilot at $30,000 a year, each starting at 10,000 credits a month, with add-ons at $10,000 a year each. Quarterly billing exists at a materially higher effective rate. Larger credit volumes and enterprise terms go through sales. |
| Free plan | No | Not currently advertised. Through 2024 and 2025 Warmly marketed a free tier with 500 de-anonymized visitors a month at the company and contact level; the August 2026 pricing page no longer lists it, and a buyer should not plan around it existing. |
| Free trial | Free trial on Lite with no credit card required and a stated two-minute setup | No standard self-serve trial is published on the current pricing page; evaluation runs through a sales-led demo and pilot. Earlier generations of the product offered self-serve signup, and remnants of that flow still exist. |
| 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. | B2B companies with meaningful United States inbound traffic, a five-figure annual budget for pipeline tooling, and a genuine intention to automate visitor engagement rather than just observe it: teams that want the chat, the sequences, the retargeting, and the alerts run by one platform instead of stitching four tools together. |
| 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. | The snippet installs in minutes and identifications begin with the next wave of traffic, but that is the trivial part. A real deployment (ICP filters, intent scoring thresholds, chatbot training, sequence content, routing rules, CRM field mapping) is a two-to-six-week project, and the sales-led onboarding reflects that. |
| 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 for viewing identifications, substantial for the orchestration layer. Building AI Studio agents that qualify correctly, sequences that read well, and routing that reps trust requires a competent RevOps or demand gen owner. Plan for one person to own Warmly as a system, not a widget. |
| Platforms | JavaScript tracking script for any website, Web application, Slack alerts, MCP connector for ChatGPT and Claude | JavaScript snippet for any website, Web application, Slack app for real-time alerts, Chrome extension for prospecting context |
| Compliance | SOC 2 Type II certified, GDPR compliant, CCPA compliant, PECR compliant | SOC 2 Type II, CCPA, GDPR commitments for company-level processing |
| Founded | 2020 | 2020 |
| Headquarters | Wilmington, Delaware, United States, with engineering operations in Bangalore, India | San Francisco, California, United States |
| Ownership | Venture-backed | Venture-backed |
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.
Warmly
Strengths
- The widest span in the category: identification, intent signals, AI chat, sequences, retargeting, and live alerts in one platform, where nearly every competitor picks one or two of those and stops.
- Real-time engagement is genuinely differentiated. The chat, video drop-in, and warm-call alerting act on a visit while it is happening, which no notification-only tool can do, and which is where the conversion value of identification actually lives.
- Intent depth beyond the site: LinkedIn activity, job changes, and Bombora research intent let the platform work named accounts before the first visit, closer to an ABM system than to a pixel.
- Unlimited seats on published plans, so sales, marketing, and leadership can all live in the tool without a per-user tax.
Limitations
- The price. At $10,000 to $30,000 a year on annual contracts, plus $10,000 add-ons, Warmly costs an order of magnitude more than the tools small businesses cross-shop it against, and the entry-level buyer this site serves is mostly priced out.
- Person-level identification is effectively United States only, a constraint shared across the category because the underlying identity data and its legal basis are American. International traffic degrades to company-level identification, which cheaper European tools do at least as well with better privacy paperwork.
- Match rates trail the specialists. Independent reviews put person-level resolution around 15 to 25 percent of sessions and company coverage near 65 percent, so most visitors stay anonymous, and a buyer comparing on identification volume alone will find better numbers elsewhere for less.
- Pricing instability is a pattern, not an incident: at least three packaging generations in three years, a free tier marketed loudly and then withdrawn, and third-party sources that contradict each other because they snapshot different eras. Whatever you negotiate, get renewal terms in writing.
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.
Warmly
Annual contracts around three agent-based products, metered by monthly credits with seats unlimited. Published list prices as of August 2026: AI Web-Deanonymization at $10,000 a year, Inbound Chat at $20,000 a year, and AI Inbound Autopilot at $30,000 a year, each starting at 10,000 credits a month, with add-ons at $10,000 a year each. Quarterly billing exists at a materially higher effective rate. Larger credit volumes and enterprise terms go through sales.
- AI Web-Deanonymization$10,000
- Inbound Chat$20,000
- AI Inbound Autopilot$30,000
Judged purely as visitor identification, Warmly is poor value: $10,000 a year buys a match rate that independent reviews place below specialist tools costing $79 to $199 a month, and the identification-only buyer should not be here. Judged as a consolidation play, the arithmetic changes. A team separately paying for an identification tool, a chat platform, a sequencer trigger layer, and an ad-audience sync could plausibly spend $10,000 to $20,000 a year across those line items and still own the integration work between them, and Warmly replaces that stack with one intent model and one contract. The honest problem is that this arithmetic only works for companies with enough US traffic, enough pipeline value per deal, and enough staffing to run the engagement motion, which describes a well-funded mid-market team far more often than it describes a small business. The repeated repricing and the disappearing free tier both say Warmly has reached the same conclusion.
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 profileWarmly
Warmly is what visitor identification looks like when a venture-backed team decides the identification is the cheap part. The platform's real product is the minute after the match: the chat that opens, the sequence that starts, the rep alerted while the buyer is still on the pricing page, and nothing else in this category runs that whole motion in one place. But this site is written for small businesses, and for them the honest verdict is mostly a warning about arithmetic. At $10,000 to $30,000 a year on annual contracts, with $10,000 add-ons, a withdrawn free tier, no self-serve trial, person-level coverage that is US-only and lower than specialist tools, and pricing that has been rebuilt three times in three years, Warmly is an enterprise-shaped purchase wearing SMB marketing. Buy it if you have real US inbound volume, five-figure deal sizes, a staffed team that will answer alerts in minutes, and a stack of point tools you would genuinely retire into it; negotiate a pilot and renewal terms before signing. For everyone else, RB2B at $149 a month answers the identification question, Leadfeeder or Snitcher answer it for European traffic, and the money saved funds a human who follows up, which is the part Warmly cannot fully automate anyway.
Read the full Warmly profileFactors.ai profile last reviewed 2026-08-22; Warmly last reviewed 2026-08-31. Pricing is compiled from public sources and can change without notice. See our methodology.