Avaya vs Zendesk
Which one do AI engines recommend, and how do they differ on price, fit and features?
The short answer
Zendesk is the stronger AI pick in Contact Center: it has a visibility score of 19.7 versus 3.2 for Avaya, and ranks ahead in 100% of the answers that name both.
Choose Avaya if…
- You need a self-hosted or on-premises option
- You need PCI or HIPAA or SOC 2 or ISO 27001 or ISO 27017 or ISO 27018 or FedRAMP Moderate or DoD IL4 High coverage
- Market leader in on-premises contact centers
- 36.3% of global revenue in 2025 for traditional contact centers
Choose Zendesk if…
- You want the brand AI engines rank higher (19.7 vs 3.2)
- AI answers describe it more positively (34% vs 20% positive)
- You need SOC 2 Type II or ISO 27001:2022 or ISO 27018:2019 or ISO 27701:2019 or ISO 27017:2015 or ISO 42001:2023 or FedRAMP LI-SaaS or Cyber Essentials Plus coverage
- Industry leader in omnichannel customer support
AI visibility side by side
Latest weekly run · Nov 3
| Metric | Avaya | Zendesk |
|---|---|---|
| Visibility score | 3.2% | 19.7% |
| Change vs last week | up+1.2% | up+1.9% |
| Rank in Contact Center | #25 | #6 |
| Share of voice | 1% | 5.3% |
| Mentions this run | 6 | 31 |
| Positive in AI answers | 20% | 34% |
The stronger value in each row is marked with a ✓.
Visibility score trend
Weekly runs over the last 60 days
Avaya +1.2000000000000002pp · Zendesk +1.8999999999999986pp over 1 weekly runs.
Engine by engine
Zendesk leads on 3 of 3 engines
Head to head in AI answers
1 engine answers name both brands
| Prompt | Engine | Avaya | Zendesk |
|---|---|---|---|
| Official website of the top contact center platform vendors | Perplexity | #15 | #12 |
Features, pricing & fit
| Dimension | Avaya | Zendesk |
|---|---|---|
| Pricing model | — | Per seat |
| Entry price | — | $19 per seat / mo |
| Free plan | — | No |
| Deployment | Cloud, hybrid or on-premises | Cloud (SaaS) |
| Integrations | — | 1800+ |
| Compliance | PCI, HIPAA, SOC 2, ISO 27001, ISO 27017, ISO 27018, FedRAMP Moderate, DoD IL4 High | SOC 2 Type II, ISO 27001:2022, ISO 27018:2019, ISO 27701:2019, ISO 27017:2015, ISO 42001:2023, FedRAMP LI-SaaS, Cyber Essentials Plus |
| Support | — | Help Center, Community, Partners |
| Founded | 2000 | 2007 |
| Headquarters | Morristown, New Jersey, USA | San Francisco, California, United States |
| Employees | 5,000+ | 5,000+ |
| Funding | Chapter 11 emergence, owned by former creditors | Take-private (Hellman & Friedman, Permira) |
| Best for | Large enterprises and government agencies | Support teams from startups to enterprises that need omnichannel ticketing with AI automation |
Plans side by side
Avaya
Pricing not available.
Zendesk
Pros and cons
Themes from the AI answers that mention each brand
Avaya
- Market leader in on-premises contact centers
- 36.3% of global revenue in 2025 for traditional contact centers
- Still a major player in traditional contact centers
Zendesk
- Industry leader in omnichannel customer support
- Scalable platform for large enterprise teams
- Mature ticketing operations and SLA management
- Extensive marketplace and broad integrations
- Free trial available for 14 days
- Heavy, slow deployment compared with lighter tools
- High per-agent costs
- AI add-ons billed separately on top of base fee
Data collected ·ChatGPT, Perplexity, Google AI Mode·coverage 98.8%·next run
Cite as: SlateIndex, “Avaya vs Zendesk”, https://slateindex.ai/compare/avaya-vs-zendesk, data of Nov 3, 2026. Licence: CC BY 4.0.