Subcategory · AI Citation Index
Voice AI
Contact-center platforms lead shortlists; Cognigy edges evaluation; ElevenLabs tops featured on TTS strength.
162 discovery queries · 230 head-to-heads · refreshed Oct 8, 2026
Discovery stage
The shortlist
Across 162 buyer-style "Voice AI" queries
nice.com and cognigy.com tie at 36.4% shortlist rate across 162 prompts, each appearing in 59 queries. ElevenLabs follows at 34.6% (119 mentions), then talkdesk.com at 30.9% and Deepgram at 27.8%. All top-five brands appear across all four LLMs tested.
Hover or click a logo to see brand details
Get weekly AI visibility changes for Voice AI sent to your inbox.
Score shifts, new entrants, citation gaps — every Monday.
Signal by intent
By topic
Top 5 most-cited brands per intent cluster. Brands with zero citations in a topic are not shown.
Amazon Web ServicesEvaluation stage
Head-to-head
How often AI cites each brand across uniform category evaluation prompts · median 5/100
Cognigy leads head-to-head comparisons with an average score of 47 across 27 queries, ahead of NICE CXone's 42 (24 queries) and Talkdesk's 40 (23 queries). Retell AI, Kore.AI, Deepgram, and PolyAI cluster between 33–37. The median evaluation score across all brands sits at 5, showing steep drop-off beyond the top tier.
Hover or click a logo to see brand details
Each brand's score is the share of category evaluation prompts where AI cited them across all four engines — the same prompt pool for every brand. Brands above the median citation rate have stronger presence in evaluation-stage queries.
Brands to know
In this category
ElevenLabs
Score of 59 reflects dominance in text-to-speech synthesis and voice cloning. Third-highest shortlist rate (34.6%) and 119 total mentions signal strong general awareness beyond TTS-specific queries.
Read brand profile →Brightcall.ai
Score of 52 despite no shortlist presence indicates recent specialist traction. Likely surfacing in conversational-AI and call-analytics use cases that bypass broader category searches.
Read brand profile →Deepgram
Score of 22 pairs with 27.8% shortlist rate and 85 mentions. Evaluation rank of 33 across 19 queries confirms steady performance in speech-to-text infrastructure comparisons.
Read brand profile →Retell AI
Evaluation score of 37 across 21 queries outpaces its featured score of 16. Missing from top-10 shortlist suggests LLMs favor it in direct comparisons over discovery prompts.
Read brand profile →Synthflow
Score of 10 reflects niche positioning in no-code voice-agent builders. Low score and absent shortlist data point to emerging-vendor status in a contact-center-dominated field.
Read brand profile →Citation sources
Where AI pulls citations from
1000 citations captured across Voice AI prompt runs.
Vendor pages
313Product, help, and marketing pages from tracked vendors
Independent sources
183Reviews, encyclopedias, forums, press — not vendor-owned
Buyer questions
What AI cites for top Voice AI questions
Most-cited prompts across the buyer journey. Click any prompt to see the actual URLs AI engines link to.
Discovery
Buyers exploring the categoryEvaluation
Buyers comparing options- AI Voice Calls and TCPA Rules: Compliance Guidedialzara.com
Want to know if AI cites your brand for Voice AI?
Free audit. ChatGPT, Perplexity, Gemini, Claude.
Run an audit →