Retell AI vs Vapi
as AI assistants see them, week of 2026-09-21
Retell AI edges out Vapi in how AI assistants talk about voice agent platforms. Retell AI scores 52 overall (ChatGPT 68, Claude 46, Perplexity 48) and gets named in 44 of 60 answers, versus Vapi's 44 overall (ChatGPT 55, Claude 47, Perplexity 31) and 38 of 60 answers. Head to head, Retell AI comes out ahead in 6 questions, Vapi in just 1, with 13 ties. Both show up in every answer for "best AI voice agents in 2026," "best AI voice agent platforms," booking appointments, and inbound support calls, and neither gets named for call analytics, contact centres, or open-source frameworks.
Head to head
| metric | Retell AI | Vapi |
|---|---|---|
| score | 52 | 44 |
| questions won | 17 | 17 |
By assistant
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 |
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 Retell AI gets named for
nothing exclusive
Only Vapi gets named for
nothing exclusive
More comparisons
- Bland vs Retell AI
- ElevenLabs Agents vs Retell AI
- Retell AI vs Synthflow
- PolyAI vs Retell AI
- Bland vs Vapi
- ElevenLabs Agents vs Vapi
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