RB2B vs Common Room 2026: Pricing, Accuracy, and Which to Pick

RB2B charges $0 to $199 a month for 150 to 2,500 monthly visitor identifications, per RB2B's pricing page. Common Room starts at $2,500 a month for 100,000 tracked contacts and full signal aggregation, per Common Room's pricing page. RB2B is built for solo founders and small outbound teams chasing anonymous website visitors. Common Room is built for GTM teams running multi-signal account-based plays at scale.

RB2B vs Common Room: Quick Comparison

Axis	RB2B	Common Room
Pricing	$0 to $199/month, 150 to 2.5M resolutions	$2,500/month (Essential), custom above that
Core capability	Anonymous website visitor identification, company and person-level	Multi-source signal aggregation across product, community, and intent data
Data accuracy	Person-level ID capped at 35-45% coverage, US only	Person360 identity resolution stitched across CRM, product, and community sources
Integrations	Slack, Teams, full integration suite on Pro and Pro+	CRM, Slack, and sales engagement platforms on every tier
Best-fit team size	Solo founders, 1 to 10-person outbound teams	15+ person GTM teams with dedicated RevOps

What does RB2B do differently from Common Room?

RB2B does one thing: it unmasks anonymous website traffic and pushes company, and on paid tiers person-level, identity straight into Slack. Common Room does a lot more. It pulls signals from your product, CRM, community platforms, and intent data providers into one scored feed, per Common Room's pricing page. If you just need to know who hit your pricing page, RB2B is the entire tool. If you need a unified view of every buying signal across a deal, Common Room is closer to a data warehouse with a GTM layer on top.

How much does RB2B cost vs Common Room in 2026?

RB2B's free plan gives 150 monthly resolutions at the company level only, no person-level data. Paid tiers start at $79/month (Starter, 300 resolutions), scaling to $149/month (Pro) and $199/month (Pro+), which unlocks person-level identification up to 2.5 million resolutions, per RB2B's pricing page. Overage runs $0.45 per resolution on Starter and $0.25 on Pro/Pro+, and extra domains cost $99/month for up to five. Common Room has no free tier. Essential starts at $2,500/month billed annually for 5 seats and 100,000 contacts. Advanced (15 seats, 250,000 contacts) and Enterprise (30 seats, 750,000 contacts) are both custom-quoted, per Common Room's pricing page.

Plan	Price	What you get
RB2B Free	$0/mo	150 resolutions, company-level only
RB2B Starter	$79/mo	300 resolutions, $0.45/resolution overage
RB2B Pro	$149/mo	600-2,500 resolutions, $0.25/resolution overage
RB2B Pro+	$199/mo	Up to 2.5M resolutions, person-level ID, $99/mo extra domains
Common Room Essential	$2,500/mo	5 seats, 100k contacts, 1k deanonymizations/mo
Common Room Advanced	Custom	15 seats, 250k contacts, 1k deanonymizations/mo
Common Room Enterprise	Custom	30 seats, 750k contacts, unlimited deanonymization

Which tool is more accurate, RB2B or Common Room?

Neither company publishes an independent accuracy audit, so treat both numbers as vendor-reported. RB2B's own pricing page caps person-level match rate at 35 to 45% coverage, and only in the US, per RB2B's pricing page. That's the honest number most visitor-ID vendors bury in a footnote. Common Room leans on Person360 identity resolution blended across CRM, product usage, and community data instead of one visitor-match rate, per Common Room's pricing page. That makes its accuracy claim harder to verify, but broader when it does resolve.

RB2B vs Common Room: which should you pick?

If you're a founder or a small outbound team under 10 people sending 500+ cold emails a month, RB2B is the obvious pick. It's cheap, fast to set up, and does one job well. Common Room is overkill and overpriced for that team. Its $2,500 floor only earns its keep once you have a RevOps function that can actually operationalize signals across five or more channels. Tools like Warmly and Clearbit Reveal sit in the same visitor-ID category as RB2B if you want a second opinion, but for most cold email operators, RB2B's Slack alert into the SDR queue is the whole workflow.

Frequently Asked Questions

Is RB2B free?

Yes. RB2B's free plan includes 150 monthly visitor resolutions at the company level, per RB2B's pricing page. Person-level identification requires a paid Pro or Pro+ plan.

How much does Common Room cost?

Common Room starts at $2,500 a month billed annually for its Essential plan, covering 5 seats and 100,000 contacts. Advanced and Enterprise tiers are custom-quoted, per Common Room's pricing page.

Is RB2B accurate for identifying website visitors?

RB2B reports 35 to 45% coverage for person-level identification, and only for US-based visitors, per RB2B's pricing page. Company-level identification is broader but doesn't name individual buyers.

Can you use RB2B and Common Room together?

Yes. Some teams run RB2B for fast Slack alerts on visitor identity while using Common Room to aggregate broader signals for account scoring. Most teams under 15 people pick one instead of paying for both.

Signal data is only worth what you do with it. Modern Inbound has booked 3,000+ qualified B2B meetings for clients running exactly this kind of intent-driven outbound, and we've watched teams burn Common Room budget on signals nobody ever emailed against. If you'd rather have someone build and run the outbound engine on top of your visitor and signal data, that's what our setup service does.

By Rishabh Ambasta, Founder, Modern Inbound.