AEO for voice AI platforms: AI search visibility ranking
How AI search engines rank voice AI platforms by visibility and citations. 20 brands measured quarterly across Google AI Mode: which brands the AI names in answers, which domains it cites as sources, and how the leaders compare. Voice AI platforms used to synthesize speech, run conversational agents, transcribe calls, and build real-time voice experiences into products and workflows. Composite score: 70% visibility (% of AI answers naming the brand) + 30% citation rate (% citing the brand's domain). Full methodology →
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When buyers inquire about Voice AI platforms, AI engines frequently mention Retell AI as the leading brand, highlighting its impressive 62.5% search visibility. Other top brands in the conversation include Vapi and ElevenLabs, showcasing the strong presence and reliability of these platforms in AI-mediated discussions.
The rankings reflect the heavy reliance of AI engines on top-cited sources like youtube.com, retellai.com, and lumay.ai. The presence of aggregator and review sites indicates the importance of user-generated content and expert reviews. These sources guide AI engines in shaping opinions and providing informed answers about brand positioning.
For buyers evaluating brands, this means paying attention to how well a brand maintains its topical authority and gains third-party validation. Recent reviews from credible aggregators or user feedback can significantly impact an AI engine's perception and recommendations, making them key factors to consider when choosing from the list.
At a glance
What we observed in this category
Retell AI holds the top composite score in this category at 70.0, a meaningful gap above second-ranked Vapi at 43.8 and third-ranked ElevenLabs at 35.0. The category average visibility sits at just 11.2 percent, making Retell AI's 62.5 percent visibility figure more than five times the norm. That gap matters for AEO because it signals a highly concentrated answer landscape where one brand dominates the responses Google AI Mode serves to buyers researching Voice AI platforms.
The most striking divergence in this audit is between visibility and citation. Vapi matches Retell AI exactly on visibility at 62.5 percent, yet holds a 0.0 percent citation rate compared to Retell AI's 87.5 percent. ElevenLabs shows the same pattern, appearing in half of all queries but receiving zero citations. This means Vapi and ElevenLabs are named in AI-generated answers but are not being linked or sourced, a critical AEO distinction between being mentioned and being trusted as a reference.
Google AI Mode is the dominant engine across all 20 brands in this dataset, with no brand recording a top engine other than Google AI Mode. Among the cited sources Google AI Mode anchors on for this category, third-party platforms dominate: youtube.com, reddit.com, zapier.com, and review-oriented sites like getvoip.com appear alongside brand-owned domains. Retellai.com is the only brand domain appearing directly in the top cited sources list, reinforcing its outsized citation advantage over all other Voice AI platform brands.
Movers & shakers since last refresh
Biggest visibility risers
-
ElevenLabs 25% → 50% · rank #3 → #3+25pp
-
Retell AI 50% → 62% · rank #1 → #1+12pp
-
Vapi 50% → 62% · rank #2 → #2+12pp
The AEO ranking
| # | Brand | Visibility | Citation | Top engine |
|---|---|---|---|---|
| 1 |
retellai.com
|
62% | 88% | Google AI Mode |
Retell AI leads all 20 brands with a composite score of 70.0, driven by an 87.5 percent citation rate that is the only figure above zero among the top three brands. |
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| 2 |
vapi.ai
|
62% | 0% | Google AI Mode |
Vapi matches Retell AI's 62.5 percent visibility but records a 0.0 percent citation rate, the sharpest visibility-to-citation gap of any brand in the top five. |
||||
| 3 |
elevenlabs.io
|
50% | 0% | Google AI Mode |
ElevenLabs reaches 50.0 percent visibility, up from 25.0 percent in the prior period, yet its citation rate fell by 12.5 points to zero, signalling growing mention without earned trust. |
||||
| 4 |
bland.ai
|
25% | 25% | Google AI Mode |
Bland is the only brand outside the top three to hold matching visibility and citation figures, both at 25.0 percent, giving it a balanced but modest AEO footprint. |
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| 5 |
cartesia.ai
|
12% | 0% | Google AI Mode |
Cartesia sits at 12.5 percent visibility and 0.0 percent citation, a composite score of 8.8 that places it level with OpenAI and well below the category's leading cluster. |
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| 6 |
openai.com
|
12% | 0% | Google AI Mode |
| 7 |
microsoft.com
|
0% | 12% | Google AI Mode |
| 8 |
resemble.ai
|
0% | 12% | Google AI Mode |
| 9 |
inworld.ai
|
0% | 12% | Google AI Mode |
| 10 |
assemblyai.com
|
0% | 12% | Google AI Mode |
| 11 |
aws.amazon.com
|
0% | 0% | Google AI Mode |
| 12 |
speechmatics.com
|
0% | 0% | Google AI Mode |
| 13 |
wellsaidlabs.com
|
0% | 0% | Google AI Mode |
| 14 |
lovo.ai
|
0% | 0% | Google AI Mode |
| 15 |
hume.ai
|
0% | 0% | Google AI Mode |
| 16 |
soundhound.com
|
0% | 0% | Google AI Mode |
| 17 |
play.ht
|
0% | 0% | Google AI Mode |
| 18 |
deepgram.com
|
0% | 0% | Google AI Mode |
| 19 |
rime.ai
|
0% | 0% | Google AI Mode |
| 20 |
cloud.google.com
|
0% | 0% | Google AI Mode |
Sources AI engines trust in this category
Across the 8 buyer-intent queries we ran on voice AI platforms, these are the domains Google AI Mode cited most often. If you're not on this list — or if your competitors are — that's a concrete PR / linkbuilding target.
How to read this AEO ranking
Four things worth knowing before you act on the numbers above. These are the same definitions across every industry page — for category-specific observations, see the What we observed section above (where available) and the per-brand insights inline in the ranking.
Visibility = being named
A brand's visibility % is the share of AI answers that mention it by name in the response prose. This is who AI engines actively recommend to the buyer. More on visibility →
Citation rate = being trusted
Citation rate is the share of AI answers that include the brand's domain as a clickable source link. This is what the AI treats as authoritative evidence, different from being named. More on citation rate →
Top engine differs by brand
The "top engine" column shows which AI surface each brand performs best on. Big gaps between a brand's score across engines usually points to specific content or schema gaps. How AI engines pick sources →
AEO rankings move month to month
AI engines re-crawl and re-rank on shorter cycles than classical search. We re-audit every brand on this list at least every 90 days and refresh this page automatically. How AI search ranking works →
Run an AEO audit on your own voice AI platforms brand
The brands above were curated from public market-leader lists. Want the same answer engine optimisation measurement against your own brand — including the queries you appear on, which competitors get named instead, and a prioritised fix list? Run a free preview.
Frequently asked about AEO for voice AI platforms
Who leads AEO in Voice AI platforms?
Retell AI leads with a composite score of 70.0, a visibility rate of 62.5 percent, and a citation rate of 87.5 percent, the highest citation figure in the entire 20-brand dataset.
What sources does Google AI Mode cite most for Voice AI platforms research?
The top cited sources include youtube.com, reddit.com, zapier.com, and getvoip.com, alongside retellai.com as the only brand-owned domain appearing in the category's top cited sources list.
Which brands are visible in AI answers but not being cited?
Vapi and ElevenLabs both appear in over 50 percent of queries but hold 0.0 percent citation rates, meaning they are named in answers without being linked or sourced by Google AI Mode.
How concentrated is AEO performance in the Voice AI platforms category?
The category average visibility is just 11.2 percent while the top two brands sit at 62.5 percent each, showing that answer engine visibility is heavily concentrated in a small cluster of brands.
Does brand size or recognition guarantee strong AEO performance in this category?
No. OpenAI and Microsoft Azure each record composite scores of 8.8 or below, well behind specialist platforms like Retell AI and Vapi, indicating that category-specific relevance outweighs general brand authority here.
What does the citation gap between visibility and citation rates indicate for Voice AI platform AEO?
It indicates that most brands in this category have achieved enough presence to be mentioned in AI-generated answers, but have not yet built the source credibility needed for Google AI Mode to actively link back to them.