AI voice agents · #1 of 29 · ↓ Vapi
Retell AI
Retell AI ranks #1 of 29 in ai voice agents in the week of 21 September 2026, with a visibility score of 52 across ChatGPT, Claude, Gemini and Perplexity. It was named in 73% of the answers we sampled.
sampled: 3 of 4 assistants this week
Retell AI shows up in 44 of 60 answers across AI assistants, with an overall score of 52 out of 100. ChatGPT rates it highest at 68, ahead of Perplexity at 48 and Claude at 46. It's named in every answer to questions like "What are the best AI voice agents in 2026?", "What's the best AI receptionist for answering calls?", and "What's the best AI voice agent for booking appointments?" But it never turns up for questions on call analytics and transcripts, enterprise contact centres, or open-source voice AI frameworks — suggesting assistants see it as a voice agent tool first, not an enterprise or open-source pick.
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Who's talking about you
| 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 |
Questions you win
| question | named in | best spot |
|---|---|---|
| What are the best AI voice agent platforms? | 3 of 3 | #1 |
| Which AI voice agent platform is cheapest per minute? | 3 of 3 | #1 |
| What's the best AI receptionist for answering calls? | 3 of 3 | #1 |
| What's the best AI voice agent for booking appointments? | 3 of 3 | #1 |
| What's the best AI voice agent for inbound customer support calls? | 3 of 3 | #1 |
| What's the best voice AI that connects to my CRM? | 3 of 3 | #1 |
| What's the best voice AI platform with its own phone numbers and telephony? | 3 of 3 | #1 |
| What's the best AI voice agent that can transfer to a human? | 3 of 3 | #1 |
| What are the best AI voice agents in 2026? | 3 of 3 | #2 |
| What's the best AI agent for outbound sales calls? | 3 of 3 | #2 |
| What's the best AI phone agent for a small business? | 3 of 3 | #3 |
| What's the best no-code tool to build a voice AI agent? | 2 of 3 | #1 |
| What's the best AI voice agent for a restaurant or clinic taking bookings? | 2 of 3 | #1 |
| Which voice AI platform is best for developers? | 2 of 3 | #2 |
| What's the best AI voice agent for languages other than English? | 2 of 3 | #3 |
| Which AI voice agent has the lowest latency? | 2 of 3 | #5 |
| Which voice AI platform sounds the most natural? | 1 of 3 | #10 |
Questions you lose
| question | who got named instead |
|---|---|
| What's the best enterprise voice AI platform for contact centres? | PolyAI, Parloa, Cognigy |
| What's the best open-source voice AI agent framework? | LiveKit Agents, Pipecat, Vocode |
| What's the best voice AI platform for call analytics and transcripts? | Dialpad |
Assistants cited 10 pages for questions in this category that name your rivals and not you. Claim to see them. See all sources for AI voice agents.
In their words
- ChatGPT“Fast deployment + reliable human transfers | Retell AI | Built specifically for phone agents, with inbound/outbound calling, workflows, analytics, and human handoff support.”
- Claude“Vapi and Retell are the usual starting points — both support warm transfer, where the AI can brief the human agent before connecting, plus SIP integration and context passing.”
- Perplexity“For warm handoff with full context, Fini is the clearest pick in the results you provided; for best overall production voice agent, Retell AI and CloudTalk/JustCall are the strongest general contenders, depending on whether you prioritize developer flexibility, native telephony, or contact-center fe”
Closest rivals
- Retell AI vs Vapi44
- Retell AI vs Bland27
- Retell AI vs ElevenLabs Agents26
- Retell AI vs Synthflow22
- Retell AI vs PolyAI17
All Retell AI alternatives · Full AI voice agents leaderboard · Sources