Customer.io vs Kayako
Customer.io vs Kayako, compared side by side on 18 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: Customer.io is on 67/100 and Kayako on 34/100.
Where each one leads
Customer.io
- our overall score: 67/100 against 34/100
- agent readiness: 75/100 against 39/100
- headcount: 514 against 62
- LinkedIn following: 41,008 against 6,661
Kayako
Leads on none of the measures we hold for both companies.
At a glance
| Measure | Customer.io | Kayako |
|---|---|---|
| What it is | Customer engagement platform. | Customer service and help desk software unifying communication channels for businesses. |
| Category | Customer Engagement Platform, Marketing Automation, MarTech, SaaS | Customer Support Software, Help Desk Software, CRM Software, Live Chat Software |
| Sells toBusiness model | B2B | B2B |
| Offering | Platform | Software |
| Founded | 2012 | 2001 |
| Headquarters | Beaverton, United States | London, United Kingdom |
| Status | Active | Active |
Size, funding and growth
| Measure | Customer.io | Kayako |
|---|---|---|
| Employees | 514 | 62 |
| Total funding | $55.0M | Not published |
| Latest round | Series A | Not published |
| Valuation | $746M | Not published |
| LinkedIn followers | 41,008 | 6,661 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Customer.io | Kayako |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 67/100 | 34/100 |
| Traction | 59/100 | 18/100 |
| Team | 60/100 | 60/100 |
| Search visibility | 55/100 | 28/100 |
| Quality | 78/100 | Not published |
| Agent readinessHow well an AI agent can read and act on the site | B (75/100) | F (39/100) |
| Domain ratingLink authority, 0-100 | 81/100 | 82/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Customer.io | Kayako |
|---|---|---|
| Hosting | Vercel | Not detected |
| CDN | Vercel | Cloudflare |
| CMS | Not detected | WordPress |
| Frameworks | Next.js, Tailwind CSS | Tailwind CSS, Bootstrap |
| Analytics | Google Tag Manager | Google Analytics 4, Google Tag Manager, Mixpanel |
| Support stack | Not detected | HubSpot |
Customer.io vs Kayako: common questions
Which is better, Customer.io or Kayako?
On our 0-100 score Customer.io rates higher (67/100 against 34/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 18 data points above: read the rows that match what you are buying for.
How do Customer.io and Kayako compare on the numbers?
Customer.io leads on our overall score (67/100 against 34/100), agent readiness (75/100 against 39/100), headcount (514 against 62), LinkedIn following (41,008 against 6,661).
Read the full Customer.io review and pricing or the Kayako review and pricing. You can also browse other Customer.io alternatives we track.

