# AI voice agents: what AI models recommend, November 2026

Gane Index, November 2026 Edition. Asked as "AI voice agent platform" and as "AI phone agent that answers customer calls", six framings each, to fourteen models with search on, on behalf of a mid-market B2B company. Added to the November 2026 Edition. Page: https://www.gane.ai/index/gtm/customer/ai-voice-agents

**Standing:** CloudTalk leads with 25% of first choices; verdict contested. 53 first choices across the direct, paraphrase, budget and scale prompts.

## First-choice share

| Rank | Product | Share | Negative rate | Labels |
|---|---|---|---|---|
| 1 | [CloudTalk](https://www.gane.ai/index/gtm/vendors/cloudtalk/index.md) | 25% | 0% | 23 |
| 2 | [Retell AI](https://www.gane.ai/index/gtm/vendors/retell-ai/index.md) | 17% | 7% | 55 |
| 3 | [Vapi](https://www.gane.ai/index/gtm/vendors/vapi/index.md) | 8% | 12% | 52 |
| 5 | [Synthflow](https://www.gane.ai/index/gtm/vendors/synthflow/index.md) | 4% | 17% | 36 |
| 11 | [PolyAI](https://www.gane.ai/index/gtm/vendors/polyai/index.md) | 2% | 21% | 24 |
| 15 | [ElevenLabs](https://www.gane.ai/index/gtm/vendors/elevenlabs/index.md) | 2% | 30% | 20 |
| 23 | [Bland AI](https://www.gane.ai/index/gtm/vendors/bland-ai/index.md) | 0% | 12% | 33 |
| 40 | [Cognigy](https://www.gane.ai/index/gtm/vendors/cognigy/index.md) | 0% | 30% | 10 |

Rank is by share of first choices among all 122 products named; products with the same share are tied, and the order among them carries no meaning. The table lists those with at least 10 labels.

## Each model's first choice on the direct prompt

- Claude Haiku 4.5: Aloware, CloudTalk; alternatives ElevenLabs Agents, Retell AI, Synthflow, Vapi
- GPT-5.4 mini: Talkdesk; alternatives ElevenLabs, Genesys Cloud CX, OpenAI Presence, Vapi
- Gemini 3.5 Flash: Retell AI; alternatives Regal.io, Sierra, Synthflow AI, Vapi
- Perplexity Sonar: CloudTalk; alternatives Retell AI
- Grok 4.20: CloudTalk; alternatives Retell AI, Vapi
- Mistral Small: Kore.ai, Synthflow; alternatives Girikon AI
- DeepSeek V4 Flash: CloudTalk; alternatives ElevenLabs Conversational AI, JustCall, Retell AI, Synthflow
- Llama 4 Maverick: CloudTalk
- Qwen 3.7 Flash: CloudTalk; alternatives Cresta, Microsoft Copilot Studio, Retell AI, Synthflow AI
- Kimi K2: Retell AI; alternatives CloudTalk, Synthflow
- GLM 4.7 FlashX: Retell AI; alternatives Aircall, CloudTalk, Synthflow, Vapi
- MiniMax M2.5: CloudTalk, Five9; alternatives Retell AI, Synthflow
- GPT-6 Luna: Retell AI; alternatives PolyAI, Synthflow, Vapi
- Muse Glimmer 30B: CloudTalk; alternatives Nextiva XBert, Retell AI, Vapi

## Sources the answers cite

76 of 84 answers came back with a source list, from 14 of 14 models. Sites named in the most answers:

- cloudtalk.io: 30 answers, 55 citations
- synthflow.ai: 27 answers, 36 citations
- retellai.com: 26 answers, 32 citations
- getvoip.com: 19 answers, 22 citations
- bland.ai: 18 answers, 20 citations
- technologyadvice.com: 18 answers, 18 citations
- botphonic.ai: 17 answers, 21 citations
- justcall.io: 14 answers, 23 citations

Pages named in the most answers:

- https://synthflow.ai/blog/best-10-ai-voice-agents-for-contact-centers-and-enterprises-tested-and-reviewed (18 answers)
- https://technologyadvice.com/voip/best-ai-voice-agents (18 answers)
- https://botphonic.ai/ (17 answers)
- https://cartesia.ai/learn/ai-voice-agent-platforms (14 answers)
- https://getvoip.com/blog/ai-voice-assistants-for-business (14 answers)
- https://kore.ai/blog/best-voice-ai-agent-platforms-compared-and-reviewed (13 answers)
- https://cloudtalk.io/ai-voice-agents (13 answers)
- https://getorchestra.io/knowledge-hub/comparisons/ai-voice-agent (11 answers)
- https://nextlevel.ai/enterprise-ai-voice-platforms (10 answers)
- https://monday.com/blog/ai-agents/ai-voice-agents (9 answers)

## Warned against

- Synthflow: 6 of 36 labels negative. "Mistral Small warns that Synthflow may not scale well for call volumes exceeding 5,000 calls per month." (Llama 4 Maverick, negative prompt)
- Vapi: 6 of 52 labels negative. "Multiple AI model reviews flag Vapi with a high negative share (43% negative labels in one analysis)." (Mistral Small, negative prompt)
- ElevenLabs: 6 of 20 labels negative. "basic ones like ElevenLabs/Goodcall (better for very small teams or voice quality focus only)" (Grok 4.20, paraphrase prompt)
- PolyAI: 5 of 24 labels negative. "Avoid enterprise-heavy options like PolyAI or Cognigy unless your needs are highly regulated" (Grok 4.20, direct prompt)

## Movement since October 2026

Floor: 11 points of share, measured on the calibration repeat.
New leader: Retell AI (27%) to CloudTalk (25%). Margin 8 points, within noise.

- Retell AI: 27% to 17%, −10. Inside the floor by 1 point · rank 1 → 2 of 122.
- Vapi: 16% to 8%, −8. Inside the floor by 3 points · rank 3 of 122, unchanged.
- CloudTalk: 19% to 25%, +6. Inside the floor by 5 points · rank 2 → 1 of 122.
- Bland AI: 3% to 0%, −3. Inside the floor by 8 points · rank 5 → 23 of 122.
- PolyAI: 0% to 2%, +2. Inside the floor by 9 points · rank 21 → 11 of 122.
- ElevenLabs: 0% to 2%, +2. Inside the floor by 9 points · rank 100 → 15 of 122.
- Sierra: 2% to 0%, −2. Inside the floor by 9 points · rank 18 → 27 of 122.
- Synthflow: 3% to 4%, +1. Inside the floor by 10 points · rank 6 → 5 of 122.
- Cognigy: 0% to 0%, ±0. Inside the floor by 11 points · rank 26 → 40 of 122.

## Record

- Method: https://www.gane.ai/index/gtm/methodology
- License: CC BY 4.0. Cite as Gane Index, November 2026 Edition, www.gane.ai/index/gtm.