PolyAI vs Vapi

as AI assistants see them, week of 2026-09-21

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Vapi outscores PolyAI overall, 44 to 17, and shows up far more often too, 38 of 60 answers versus 18 of 60. ChatGPT, Claude, and Perplexity all rank Vapi higher. Head-to-head across shared questions, Vapi comes out ahead 14 times, PolyAI just once, with 5 ties. Vapi leads on broad questions like best AI voice agents in 2026, best platforms, booking appointments, and cheapest per minute, always naming it in every one of those. PolyAI's strongest showings are narrower: contact centres and inbound support, each 3 of 3, but it's absent from five questions entirely, including analytics and non-English support.

Head to head

metric	PolyAI	Vapi
score	17	44
questions won	10	17

By assistant

PolyAI

assistant	score	named in, this week	usual spot, this week
ChatGPT	19	25% of answers	#3.0
Claude	22	45% of answers	#8.0
Gemini	not sampled this week
Perplexity	13	20% of answers	#4.3

Vapi

assistant	score	named in, this week	usual spot, this week
ChatGPT	55	70% of answers	#2.9
Claude	47	80% of answers	#5.6
Gemini	not sampled this week
Perplexity	31	40% of answers	#2.9

Where they differ

Only PolyAI gets named for

What's the best enterprise voice AI platform for contact centres?

Only Vapi gets named for

Which AI voice agent platform is cheapest per minute?
Which voice AI platform is best for developers?
What's the best AI voice agent for booking appointments?
Which AI voice agent has the lowest latency?
What's the best AI phone agent for a small business?
What's the best AI agent for outbound sales calls?
What's the best AI voice agent for languages other than English?
Which voice AI platform sounds the most natural?

More comparisons

Not sold on either?

Scores count how often each assistant names a product, weighted by position. How the score works · Full AI voice agents leaderboard