# Sierra alternatives: what AI models name instead, October 2026

GTM AI Recommendation Index, October 2026 Edition. 237 of the 252 answers in the 1 category where Sierra holds a standing named it neither first nor as an alternative; these are the first choices those answers made. Page: https://gtm-ai-index.com/vendors/sierra/alternatives/

## Named instead, most often (every category and segment added)

- Retell AI: 54
- CloudTalk: 25
- Vapi: 23
- Synthflow: 10
- PolyAI: 9
- Bland AI: 8

## AI voice agents

**Small business**: 84 of 84 answers did not name Sierra.

- Retell AI: first choice in 20 of those 84
- CloudTalk: first choice in 13 of those 84
- Synthflow: first choice in 10 of those 84
- Vapi: first choice in 8 of those 84
- Goodcall: first choice in 5 of those 84
- Bland AI: first choice in 2 of those 84
- Brilo.ai: first choice in 2 of those 84
- Rosie AI: first choice in 2 of those 84

**Mid-market**: 81 of 84 answers did not name Sierra (Sierra is #6 of 8 at 2%).

- Retell AI: first choice in 23 of those 81
- CloudTalk: first choice in 12 of those 81
- Vapi: first choice in 12 of those 81
- Aloware: first choice in 5 of those 81
- Bland AI: first choice in 3 of those 81
- Brilo.ai: first choice in 2 of those 81
- Goodcall: first choice in 2 of those 81
- Regal: first choice in 2 of those 81

**Enterprise**: 72 of 84 answers did not name Sierra (Sierra is #5 of 11 at 7%).

- Retell AI: first choice in 11 of those 72
- PolyAI: first choice in 9 of those 72
- Cognigy: first choice in 6 of those 72
- Bland AI: first choice in 3 of those 72
- Decagon: first choice in 3 of those 72
- Kore.ai: first choice in 3 of those 72
- Parloa: first choice in 3 of those 72
- Vapi: first choice in 3 of those 72

Published under CC BY 4.0. The output is the models' output; nothing here is a recommendation by the index.