Subcategory · AI Citation Index
Voice AI
Cognigy and ElevenLabs lead shortlists; ElevenLabs scores 59 in head-to-head, trailed by Deepgram at 22.
162 discovery queries · 230 head-to-heads · refreshed Jul 22, 2026
Discovery stage
The shortlist
Across 162 buyer-style "Voice AI" queries
cognigy.com appears in 36% of 162 prompts, edging ElevenLabs (35%) and nice.com (33%). All top-10 brands draw from all 4 models, showing no major model bias. Contact-center platforms (Talkdesk, ServiceNow, Observe.ai) cluster mid-list alongside pure speech APIs (Deepgram, Azure AI Speech).
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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
In direct comparisons, Cognigy averages 47 points across 27 queries, NICE CXone 42 across 24, and Talkdesk 40 across 23. Retell AI and Kore.AI follow at 37 and 35. Median evaluation score across all 18 brands is just 5, indicating sparse head-to-head data outside the top tier.
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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
Scores 59—highest in the category—and lands in 35% of shortlists. Models cite it 119 times, more than any rival, reflecting rapid adoption for text-to-speech and voice cloning.
Read brand profile →Deepgram
Scores 22 and appears in 28% of prompts with 85 mentions. Developer-first speech-to-text API competes directly with Azure AI Speech, which trails at 27% shortlist rate and 57 mentions.
Read brand profile →Retell AI
Scores 16 and averages 37 in comparisons despite missing the top-10 shortlist. Suggests strong performance in niche conversational-voice queries where it was explicitly evaluated.
Read brand profile →Synthflow
Scores 10. No-code voice-agent builder targeting SMBs; absent from shortlist top-10 but present in evaluation cohort, signaling demand in simpler deployment scenarios.
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
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