PolyAI vs Retell AI

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

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Retell AI clearly leads here, with an overall score of 52 versus PolyAI's 17, and it shows up far more often too, named in 44 of 60 answers compared to PolyAI's 18 of 60. Head-to-head, Retell AI comes out ahead in 15 questions, PolyAI in just 1, with 4 ties. Retell AI is a strong pick for booking appointments, inbound support calls, and general "best voice agent platform" questions, while PolyAI's best showing is for enterprise contact centres and inbound support, where it's named in every one of 3 answers. Neither is ever mentioned for call analytics or open-source frameworks.

Head to head

metric	PolyAI	Retell AI
score	17	52
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

Retell AI

assistant	score	named in, this week	usual spot, this week
ChatGPT	68	75% of answers	#1.7
Claude	46	80% of answers	#6.0
Gemini	not sampled this week
Perplexity	48	65% of answers	#3.4

Where they differ

Only PolyAI gets named for

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

Only Retell AI gets named for

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