V
VSynthflow vs Zendesk AI
Pricing, features, platforms and who each one suits — side by side.
S
Choose Synthflow if…
- you need an API to build on
- you're in its core audience: contact centers, bpos
Z
Choose Zendesk AI if…
- you want to trial it before paying
- you're in its core audience: customer support teams, contact centre managers
Side by side
Feature Synthflow Zendesk AI
Pricing modelContact for pricingFree trial
Starting price——
Free plan
Free trial
API
Open source
Security and compliance—SOC 2 Type II, ISO 27001, ISO 27701, HIPAA
PlatformsWeb, APIWeb
CategoryVoice AgentsCustomer Support
CompanySynthflow AIZendesk, Inc. · United States
Full feature lists
S Synthflow
- Inbound and outbound AI phone agents
- Response time under half a second, with interruption handling
- Language switching during a call
- Warm handoff to human agents with full transcript
- Appointment booking, voicemail detection and SMS follow-ups
- 200+ integrations including Salesforce, HubSpot, Zendesk
- Pre-launch testing and staged rollout with approval
- US, EU and Latin America hosting regions
Z Zendesk AI
- AI agents that resolve multi-step requests across channels
- Actions in connected business systems
- Copilot suggests next-best actions for service agents
- Knowledge graph that unifies help content and third-party sources
- Knowledge base content updated from recent conversations
- AI quality assurance scoring 100% of interactions
- Admin recommendations for service quality gaps
- 1,800+ apps and integrations in the marketplace
Their home pages
What each vendor shows first: the pitch, the plans and the sign-up.
Synthflow · synthflow.ai
Zendesk AI · zendesk.comWhat you'd pay
The cheapest plan that fits, per month, billed yearly where the plan offers it.
Synthflow
EnterpriseCustom
Zendesk AI
Zendesk SuiteSee vendor pricing page
Copilot add-onSee vendor pricing page
Price changes we've recorded
We re-read each pricing page every month and log what changed.
Synthflow
No changes since we started tracking.
Zendesk AI
- Nov 5, 2026New plan: Zendesk Suite (See vendor pricing page); Copilot add-on: £40/agent/mo billed yearly → See vendor pricing page; Plan dropped: Support Team; Plan dropped: Suite Team; Plan dropped: Suite Professional; Plan dropped: Suite Enterprise + Copilot
Strengths and limitations
Synthflow
- SOC 2 Type II, ISO 27001, PCI DSS and HIPAA BAA compliance
- Works with major phone systems and SIP trunks
- White-label deployment with per-client workspaces
- Retention controls can delete recordings and transcripts after 30 days
- No free plan or trial
- Sold only as an annual enterprise agreement
- No published prices or per-minute rate
- SMS and WhatsApp limited to US workspaces
Zendesk AI
- Some AI features, including generative search, come with Suite plans
- QA scores all interactions automatically
- Marketplace lists 1,800+ apps and integrations
- Eligible startups can get up to two years of Zendesk free
- Copilot costs extra as an add-on
- Built for use inside the Zendesk platform
- The AI page itself lists no prices
More comparisons
Other options to consider
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Developer platform to build, test and deploy voice AI agents for phone calls
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BB
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R
Free trial
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Build, deploy and monitor AI voice agents that answer and place phone calls
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PP
Contact
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Voice and chat AI agents for enterprise customer service, plus a voice model API
Voice AgentsAPI
I
IAI customer agent that resolves support, sales and ecommerce conversations
From $49.50/mo
I
From $49.50/mo
I
AI customer agent that resolves support, sales and ecommerce conversations
Customer SupportAPI
G
GG
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Facts from each vendor's public pages, prices checked Oct 26, 2026. Editorial policy