AI SUPPORTSOFTWAREBrowse 30 tools 
Side-by-side comparison
Compare audience fit, channels, integrations, knowledge sources, public pricing information, and operational considerations.
Both products appear in ai support agents and voice and contact-center ai. That overlap gives you a starting point; it does not mean the products cover the same channels, workflows, or deployment model.
AI agents that answer and act across Zendesk messaging, email, web forms and voice workflows.
Support organizations standardizing ticketing, knowledge, routing and AI automation in one suite.
Explore its buying criteria: AI support agents · AI help desks · Voice and contact-center AI.
Full Zendesk AI profile and vendor sources · Checked 2026-09-02
Developer infrastructure for configuring and deploying advanced voice AI agents with chosen models and telephony.
Engineering teams that want low-level control of voice models, providers and call infrastructure.
Explore its buying criteria: AI support agents · Voice and contact-center AI · Agent builders.
Full Vapi profile and vendor sources · Checked 2026-09-02
The table below preserves each vendor’s scope and qualifiers. An unlisted feature is unverified here; it is not a claim that the feature is unavailable.
Before you decide
Zendesk AI: Agent licenses plus AI resolution usage. Support Team and Suite Team include 5 automated resolutions per agent/month; Suite Professional includes 10, subject to a 10,000 annual cap. Messaging AI requires messaging access; advanced AI capabilities may require another package. Vapi: Usage-based hosting plus provider costs for transcription, language models, speech and telephony. Bring-your-own keys move provider billing to your own account. Includes 10 concurrent calls; extra lines cost $10/month each. Scale uses a quoted platform fee and committed volume under an annual contract. Ask both vendors to quote the same expected workload, required channels, and implementation scope. Include required subscriptions and usage charges before comparing the total; the listed starting prices alone may cover different work.
The recorded sources for Zendesk AI include Zendesk Knowledge; ticket history; help center; connected business systems. For Vapi, they include prompts; custom functions; documents; external APIs. Ask each vendor to demonstrate ingestion or live access for the exact system you use, with permissions and refresh behavior. A source missing from this directory is not proof that a vendor cannot support it.
Use the same sample of real support requests, approved knowledge, and escalation rules in both pilots. Can it cite or restrict answers to approved knowledge? What happens when the agent is uncertain? Which actions can it complete beyond answering? Record answer quality, completed tasks, human handoffs, and total cost in the buyer worksheet. Check these specific cautions before launch: Zendesk AI: AI consumption is measured by automated resolutions/allowances; confirm current allowance and overage terms. Vapi: Total per-minute cost includes selected STT, LLM, TTS and telephony providers; more engineering is required than turnkey tools.
Record your requirements and pilot results in the buyer worksheet →
On a small screen, swipe the table to compare both products.
| Criterion | Zendesk AI | Vapi |
|---|---|---|
| Best fit | Support organizations standardizing ticketing, knowledge, routing and AI automation in one suite. | Engineering teams that want low-level control of voice models, providers and call infrastructure. |
| Key capabilities | automated resolutions, intent detection, authorized actions, handoff, agent copilot, voice AI | voice orchestration, custom models, telephony, function calling, webhooks, HIPAA/zero-retention options |
| Company sizes | mid-market, enterprise | small, mid-market, enterprise, developer/startup |
| Channels | messaging, email, web form, voice | phone, voice, web, telephony APIs |
| Integrations | Zendesk Support, Zendesk Knowledge, CRM and marketplace apps, APIs | telephony providers, LLM providers, TTS/STT providers, webhooks/APIs |
| Knowledge sources | Zendesk Knowledge, ticket history, help center, connected business systems | prompts, custom functions, documents, external APIs |
| Pricing model | Agent licenses plus AI resolution usage. Support Team and Suite Team include 5 automated resolutions per agent/month; Suite Professional includes 10, subject to a 10,000 annual cap. Messaging AI requires messaging access; advanced AI capabilities may require another package. | Usage-based hosting plus provider costs for transcription, language models, speech and telephony. Bring-your-own keys move provider billing to your own account. Includes 10 concurrent calls; extra lines cost $10/month each. Scale uses a quoted platform fee and committed volume under an annual contract. |
| Pricing summary | Support Team $25/agent/month for email AI; omnichannel Suite Team $69 or Suite Professional $149 (USD, monthly subscription). Additional automated resolutions cost $1.50 committed or $2 pay as you go. | Pay as you go: $0.05/minute for call hosting or $0.005/message for SMS/chat hosting (USD), plus model, speech and transport-provider charges. These are platform fees, not the full cost of a call. |
| Free plan or trial | 14-day Suite Professional trial with AI evaluation access; available capabilities vary. | Free trial credit available for initial testing; ongoing use is metered. |
| Differentiator | Broad helpdesk and contact-center footprint with native AI agent actions. | Composable developer stack with provider choice and infrastructure controls. |
| Considerations | AI consumption is measured by automated resolutions/allowances; confirm current allowance and overage terms. | Total per-minute cost includes selected STT, LLM, TTS and telephony providers; more engineering is required than turnkey tools. |
Support organizations standardizing ticketing, knowledge, routing and AI automation in one suite.
Broad helpdesk and contact-center footprint with native AI agent actions.
Engineering teams that want low-level control of voice models, providers and call infrastructure.
Composable developer stack with provider choice and infrastructure controls.
Verify current pricing, limits, security, and required integrations directly with each vendor before purchasing.