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PolyAI vs Vapiwhich AI support agent should you pick in 2026?

Enterprise voice assistants for call centers — natural conversations that resolve customer calls.

🎧SupportAutonomousSubscription
VoiceTool useMemoryRAG

Developer-first voice agents — build production phone agents with an SDK and dashboard.

🎧SupportAutonomousPay per task
VoiceTool useMemory

PolyAI vs Vapi — specs

SpecPolyAIVapi
Agent Rank73 / 100 (A)70 / 100 (B)
AutonomyAutonomousAutonomous
PricingSubscription · Free tierPay per task · Free tier
Open sourceNoNo
CapabilitiesVoice, Tool use, Memory, RAGVoice, Tool use, Memory
Integrations3 apps2 apps
VerifiedVerifiedVerified
ReleasedSep 2024Feb 2025

Categories: PolyAISupport · VapiSupport

Agent Rank breakdown

PolyAI
Agent Rank
73/ 100
AA-tier
Autonomy fit
9
Capabilities
8
Integrations
4
Pricing value
9
Polish & maturity
7
Verifiability
7

Auto-computed from autonomy, capabilities, integrations, pricing, maturity and editorial verification. Updated every deploy. How is this computed?

Vapi
Agent Rank
70/ 100
BB-tier
Autonomy fit
9
Capabilities
6
Integrations
2
Pricing value
9
Polish & maturity
6
Verifiability
10

Auto-computed from autonomy, capabilities, integrations, pricing, maturity and editorial verification. Updated every deploy. How is this computed?

Pros & cons

PolyAI
Vapi
Pros
  • +Most developer-friendly voice agent in 2026 — SDK-first, well documented
  • +BYO model gives full cost + behavior control
  • +Pay-as-you-go makes prototyping nearly free
Cons
  • You build the conversation logic — not a turnkey product
  • Voice quality depends heavily on which provider you wire in
  • Less polished than Parloa for contact-center deployments

Pricing

PolyAI
Vapi
Recommended
Pay-as-you-go
Free
Developers
  • +$0.05/min base
  • +BYO LLM provider
  • +Full SDK + dashboard
Enterprise
Custom
Production at scale
  • +Volume discounts
  • +Dedicated infra option
  • +SLA + support

Which one should you pick?

PolyAI

Pick PolyAI if its specific capabilities (Voice, Tool use) match what you need.

Try PolyAI →
Vapi

Pick Vapi if its specific capabilities (Voice, Tool use) match what you need.

Try Vapi →

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Frequently asked

Should I pick PolyAI or Vapi in 2026?+

Pick PolyAI if its specific capabilities (Voice, Tool use) match what you need. Pick Vapi if its specific capabilities (Voice, Tool use) match what you need. Most working teams running both can use PolyAI for primary work and Vapi for the workflows where its specific strengths matter.

What's the price difference between PolyAI and Vapi?+

Both PolyAI and Vapi start in the same pricing range (Subscription · Free tier vs Pay per task · Free tier). Total cost of ownership depends on your team size and volume — see the TCO calculator for your specific math.

Which is more autonomous, PolyAI or Vapi?+

Both PolyAI and Vapi are Autonomous agents — neither has a meaningful autonomy advantage over the other. The decision should hinge on capabilities and pricing instead.

Readers comparing PolyAI and Vapi also picked

Adjacent agents in the same category with overlapping capabilities — worth a side-by-side glance before you commit.

  • AI customer service agent — resolves tickets across chat, email, voice with measurable deflection rates.

    🎧SupportAutonomousSubscription
    RAGTool useMemoryVoice
    38kFeb 4, 2025ada.cx
    Demo · hover to play
Want the real monthly cost at your volume? Run the TCO calculator →
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PolyAI vs Vapi (2026): which AI support agent wins? · AI Agent Rank