Five9 vs Zendesk
Five9 vs Zendesk, compared side by side on 21 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: Five9 is on 62/100 and Zendesk on 62/100.
Where each one leads
Five9
- funding raised: $71.6M against $500K
Zendesk
- agent readiness: 61/100 against 41/100
- domain rating: 93/100 against 77/100
- headcount: 6,706 against 3,051
At a glance
| Measure | Five9 | Zendesk |
|---|---|---|
| What it is | Cloud contact center software provider. | Cloud-based customer service and engagement platform providing ticketing, messaging, and AI-powered support tools. |
| Category | Artificial Intelligence, Customer Service, Cloud Computing, Cloud Contact Center Software | Customer Service, Software, AI, SaaS |
| Sells toBusiness model | B2B | B2B |
| Offering | Software | Software |
| Founded | 2001 | 2007 |
| Headquarters | San Ramon, USA | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Five9 | Zendesk |
|---|---|---|
| Employees | 3,051 | 6,706 |
| Total funding | $71.6M | $500K |
| Latest round | Series D | Seed |
| Valuation | $1.1B | $10B |
| LinkedIn followers | 121,557 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Five9 | Zendesk |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 62/100 | 62/100 |
| Traction | 59/100 | 48/100 |
| Team | 70/100 | 30/100 |
| Community | 15/100 | Not published |
| Search visibility | 45/100 | 33/100 |
| Quality | 68/100 | 81/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (41/100) | C (61/100) |
| Domain ratingLink authority, 0-100 | 77/100 | 93/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Five9 | Zendesk |
|---|---|---|
| Hosting | Self Managed | Not detected |
| CDN | Not detected | Cloudflare |
| Frameworks | Tailwind CSS, Bootstrap | Next.js |
| Analytics | Google Tag Manager | Google Tag Manager |
| Support stack | Not detected | Zendesk |
| Open source | No | Yes |
Five9 vs Zendesk: common questions
Which is better, Five9 or Zendesk?
Both score the same on our 0-100 rating, so the choice comes down to the 21 data points in the tables above rather than overall company strength.
How do Five9 and Zendesk compare on the numbers?
Five9 leads on funding raised ($71.6M against $500K). Zendesk leads on agent readiness (61/100 against 41/100), domain rating (93/100 against 77/100), headcount (6,706 against 3,051).
Read the full Five9 review and pricing or the Zendesk review and pricing. You can also browse other Five9 alternatives we track.