Voice AI platforms: AI search visibility ranking (2026)
How AI search engines rank voice ai platforms by visibility and citations. 20 brands measured monthly 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 you ask AI engines about Voice AI platforms, Retell AI is frequently highlighted as the leading brand. With an impressive 50% visibility rate among AI responses, Retell AI stands out as a top choice. Other notable mentions include Vapi and ElevenLabs, which are often cited alongside the leader in this category.
The rankings reflect the sources most commonly referenced by AI engines. Retell AI appears often because of strong citations from sites like retellai.com and lumay.ai. These sites are primary sources of information, and when coupled with major platforms like youtube.com, they ensure aggregated and comprehensive insights into the capabilities of the platforms.
For buyers considering different brands, it's important to note the value AI engines place on reliable, recent reviews and authoritative third-party validations. When choosing from the list, look at which platforms have current and credible reviews and are well-cited, as they likely hold strong topical authority in the Voice AI subcategory.
At a glance
What we observed in this category
Retell AI leads the Voice AI platforms category with a composite score of 61.2, more than 26 points ahead of second-placed Vapi at 35.0. Both share identical visibility of 50.0%, which is already far above the category average of 6.9%, but the gap at composite level is driven entirely by citation. Retell AI's citation rate of 87.5% is the highest in the category, while the remaining 18 brands average well below 10%. This concentration at the top means a buyer querying Google AI Mode is overwhelmingly likely to encounter just one or two brands.
Vapi illustrates a stark divergence between being named and being trusted as a source. It matches Retell AI on visibility at 50.0% but carries a citation rate of exactly 0.0%, meaning Google AI Mode surfaces it in responses without linking to its domain as a reference. Inworld presents the inverse case: zero visibility yet a 62.5% citation rate, making it one of the most-cited sources in the category despite never appearing as a featured brand. These two outliers show that named presence and cited authority are measured independently and can move in opposite directions.
Google AI Mode is the only engine recorded across all 20 brands in this audit, indicating the data reflects a single-engine snapshot rather than a cross-platform comparison. The top cited sources list includes third-party domains such as youtube.com, zapier.com, cloudtalk.io, and lumay.ai alongside brand-owned domains, suggesting AI responses in this category are anchored partly on review and how-to content rather than vendor sites alone. Retellai.com and inworld.ai are the only brand-owned domains that appear in that cited-sources list, reinforcing their structural authority advantage.
Movers & shakers since last refresh
Biggest visibility risers
-
Vapi 25% → 50% · rank #2 → #2+25pp
-
Retell AI 38% → 50% · rank #1 → #1+12pp
Biggest visibility fallers
-
Bland 25% → 12% · rank #3 → #5-12pp
The ranking
| # | Brand | Visibility | Citation | Top engine |
|---|---|---|---|---|
| 1 |
retellai.com
|
50% | 88% | Google AI Mode |
Retell AI holds the top composite score of 61.2 and a category-high citation rate of 87.5%, nearly 79 points above the category average citation rate of 8.8%. |
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| 2 |
vapi.ai
|
50% | 0% | Google AI Mode |
Vapi matches Retell AI on visibility at 50.0% but records a 0.0% citation rate, producing a composite score of 35.0 that relies entirely on named appearances rather than cited authority. |
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| 3 |
elevenlabs.io
|
25% | 12% | Google AI Mode |
ElevenLabs sits at 25.0% visibility and 12.5% citation for a composite of 21.2, placing it well above the 6.9% category visibility average but significantly behind the two leading brands. |
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| 4 |
inworld.ai
|
0% | 62% | Google AI Mode |
Inworld reaches 0.0% visibility yet achieves a 62.5% citation rate, the second highest in the category, giving it a composite score of 18.8 through source authority alone. |
||||
| 5 |
bland.ai
|
12% | 12% | Google AI Mode |
Bland dropped two rank positions from 3 to 5 after its visibility fell 12.5 points to 12.5%, landing it at the category composite average floor with a score of 12.5. |
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| 6 |
hume.ai
|
0% | 0% | Google AI Mode |
| 7 |
cartesia.ai
|
0% | 0% | Google AI Mode |
| 8 |
play.ht
|
0% | 0% | Google AI Mode |
| 9 |
deepgram.com
|
0% | 0% | Google AI Mode |
| 10 |
assemblyai.com
|
0% | 0% | Google AI Mode |
| 11 |
rime.ai
|
0% | 0% | Google AI Mode |
| 12 |
soundhound.com
|
0% | 0% | Google AI Mode |
| 13 |
openai.com
|
0% | 0% | Google AI Mode |
| 14 |
cloud.google.com
|
0% | 0% | Google AI Mode |
| 15 |
microsoft.com
|
0% | 0% | Google AI Mode |
| 16 |
aws.amazon.com
|
0% | 0% | Google AI Mode |
| 17 |
speechmatics.com
|
0% | 0% | Google AI Mode |
| 18 |
resemble.ai
|
0% | 0% | Google AI Mode |
| 19 |
wellsaidlabs.com
|
0% | 0% | Google AI Mode |
| 20 |
lovo.ai
|
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 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 →
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 30 days and refresh this page automatically. How AI search ranking works →
Get your own voice ai platforms brand audited
The brands above were curated from public market-leader lists. Want the same 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 voice ai platforms AI visibility
Who leads AI visibility in the Voice AI platforms category?
Retell AI leads with a composite score of 61.2, driven by 50.0% visibility and an 87.5% citation rate. No other brand in the category comes close to that citation figure.
What sources does Google AI Mode cite most for Voice AI platform research?
The top cited sources include retellai.com, inworld.ai, youtube.com, zapier.com, and cloudtalk.io, indicating AI responses blend vendor-owned domains with third-party review and how-to content.
Which brands appear in AI responses but are not cited as sources?
Vapi has 50.0% visibility but a 0.0% citation rate, meaning it is named in responses without its domain being referenced. Hume AI, Cartesia, PlayHT, Deepgram, and AssemblyAI record both metrics at zero.
Can a brand have strong citation authority without appearing frequently in AI responses?
Yes. Inworld records 0.0% visibility but a 62.5% citation rate, making it the clearest example in this dataset of a brand cited as a source without being surfaced as a featured platform.
How concentrated is AI visibility across the 20 brands in this category?
Very concentrated. The category average visibility is just 6.9%, and 15 of the 20 tracked brands hold 0.0% visibility, with meaningful presence confined to Retell AI, Vapi, ElevenLabs, and Bland.
Which brands showed the largest visibility movement in the most recent period?
Vapi gained 25.0 visibility points to reach 50.0%, while Bland lost 12.5 points and fell two rank positions from 3 to 5. Retell AI also grew, adding 12.5 points alongside a matching 12.5-point citation gain.