Attio vs B12
Attio vs B12, compared side by side on 17 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Attio is on 49/100 and B12 on 49/100.
Where each one leads
Attio
- funding raised: $93.5M against $28.1M
B12
Leads on none of the measures we hold for both companies.
At a glance
| Measure | Attio | B12 |
|---|---|---|
| What it is | Attio is a CRM platform that automatically organizes customer data and helps teams build custom workflows without manual data entry. | A human-assisted AI platform that helps businesses build, manage, and optimize professional websites with integrated tools for client management. |
| Category | CRM, Sales Automation, Customer Relationship Management, Workflow Automation | AI Website Builder, Website Builder, Generative AI, AI Agent |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Platform |
| Founded | Not published | 2015 |
| Headquarters | London, United Kingdom | New York, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Attio | B12 |
|---|---|---|
| Employees | 179 | Not published |
| Total funding | $93.5M | $28.1M |
| Latest round | Series B | Series B |
| LinkedIn followers | 54,339 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Attio | B12 |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 49/100 | 49/100 |
| Traction | 60/100 | 37/100 |
| Team | Not published | 50/100 |
| Search visibility | 36/100 | 12/100 |
| Quality | 58/100 | 58/100 |
| Agent readinessHow well an AI agent can read and act on the site | C (60/100) | C (62/100) |
| Domain ratingLink authority, 0-100 | 75/100 | 81/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Attio | B12 |
|---|---|---|
| Hosting | Vercel | Netlify |
| CDN | Cloudflare | CloudFront |
| CMS | Ghost | Not detected |
| Frameworks | Next.js, Tailwind CSS | Not detected |
| Analytics | Not detected | Google Tag Manager |
| Open source | Yes | No |
What users say
| Measure | Attio | B12 |
|---|---|---|
| Reddit sentimentThreads we track | 2 positive, 2 negative across 6 threads | Not published |
“Attio feels like an early Airtable with clean UX. It's built for small teams that want custom data models and API integrations without spending several thousand euros a month.”r/CRM
Attio vs B12: common questions
Which is better, Attio or B12?
Both score the same on our 0-100 rating, so the choice comes down to the 17 data points in the tables above rather than overall company strength.
How do Attio and B12 compare on the numbers?
Attio leads on funding raised ($93.5M against $28.1M).
What do real users say about Attio and B12?
Attio: 2 positive and 2 negative mentions across 6 Reddit threads we track, mostly in r/CRM.
Read the full Attio review and pricing or the B12 review and pricing. You can also browse other Attio alternatives we track.