PolyAI vs Vapi

PolyAI — Application · Private · Undisclosed · 1 of 1 figure sourced  |  Vapi — Application · Private · Early-stage · 2 of 2 figures sourced

Relationship

Dialog Studio and Vapi both list voice agent; scale not recorded for either.

Assembled from the recorded fields for this pair, not hand-checked. The comparison below is read from each company’s own profile.

3 shared capabilitiesShared product type

3 shared capabilities — Across all their products, both list agent orchestration, evaluation and observability and voice agent.

Ludbee capability tags · every product each company sells

Shared product type — Both ship AI agent and agent platform.

Ludbee product records

Aligned comparison

FieldPolyAIVapi
StageUndisclosedEarly-stage
Founded20172020 3 yrs later
StatusPrivatePrivate match
CategoryApplicationApplication match
Stack layerAI agent, Agent platformAI agent, Agent platform match
HeadquartersLondon, United KingdomSan Francisco, USA

Capability overlap

Shared · 3

Agent orchestrationEvaluation and observabilityVoice agent

Not verified for Vapi · 1

Customer support

Recorded for PolyAI. Vapi’s product records say nothing either way — a missing record is not a missing capability.

Not verified for PolyAI · 1

Workflow automation

Recorded for Vapi. PolyAI’s product records say nothing either way — a missing record is not a missing capability.

Products, side by side

Algorithmic pairing — assembled from recorded fields, not hand-checked

PolyAI

AI agent

PolyAI dialog agentsAI agent

Voice and chat dialog agents that handle an enterprise's customer calls and messages end to end, built and optimised on PolyAI's Wren and Dialog Studio tooling.

WrenAI agent

Natural-language agent inside PolyAI's Dialog Studio that builds a customer-service agent's flows and prompts from a description, writes and runs simulation tests, answers questions over real call transcripts and drafts fixes when live calls fail.

Agent platform

Dialog StudioAgent platform

Self-serve platform for building, testing and deploying voice and chat customer-service agents on PolyAI's own models, through a visual studio, a Python ADK and CLI, REST APIs and hosted MCP servers.

Vapi

AI agent

ComposerAI agent

Composer builds and configures voice AI agents through natural conversation.

Agent platform

VapiAgent platform

Developer platform and API for building voice agents that handle phone and web calls: configure the voice, model and telephony, then test, deploy and monitor them.

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