AI voice agents: AI search visibility ranking (2026)
How AI search engines rank ai voice agents 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. AI voice agent platforms used to power automated phone conversations, scheduling, support, qualification, and conversational workflows. Composite score: 70% visibility (% of AI answers naming the brand) + 30% citation rate (% citing the brand's domain). Full methodology →
Refreshed Jun 14, 2026Download this ranking as a PDF
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At a glance
What we observed in this categoryauto-generated
Retell AI dominates the AI voice agents category with a visibility score of 25.0%, more than six times the category average of 3.8%, and a citation rate of 50.0% that no other brand comes close to matching. The next four ranked brands, Synthflow, Bland, Vapi, and ElevenLabs, each sit at exactly 12.5% visibility, meaning the gap between first and second place is as large as the gap between second place and zero. This concentration at the top signals that Google AI Mode has formed a strong preference for one brand above a tightly clustered mid-tier.
A notable divergence between visibility and citation appears at ranks three through five. Bland, Vapi, and ElevenLabs each hold 12.5% visibility but carry a 0.0% citation rate, meaning Google AI Mode surfaces them in answers without linking to their domains as sources. Cresta presents the inverse case, scoring 0.0% visibility yet earning a 12.5% citation rate, suggesting the AI references Cresta content as a source without naming the brand prominently in responses. This split shows that being named and being trusted as a source are measurably distinct outcomes in this category.
The cited sources list reveals that Google AI Mode anchors its AI voice agent responses on a mix of brand-owned domains and third-party community platforms. Retellai.com and synthflow.ai appear as direct brand citations, while youtube.com and reddit.com feature prominently, indicating the AI draws on user-generated and video content to support its answers. Specialist comparison and workflow sites such as vellum.ai, lindy.ai, assembled.com, and callbotics.ai also appear, suggesting that independent review and aggregator content carries meaningful weight in shaping what the AI treats as authoritative in this category.
Movers & shakers since last refresh
Biggest visibility risers
-
Retell AI 0% → 25% · rank #0 → #1+25pp
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Synthflow 0% → 12% · rank #0 → #2+12pp
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Bland 0% → 12% · rank #0 → #3+12pp
The ranking
| # | Brand | Visibility | Citation | Top engine |
|---|---|---|---|---|
| 1 |
retellai.com
|
25% | 50% | Google AI Mode |
Retell AI leads all brands with 25.0% visibility and 50.0% citation rate, both figures dwarfing the 3.8% category average across both metrics. |
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| 2 |
synthflow.ai
|
12% | 12% | Google AI Mode |
Synthflow sits at 12.5% visibility and 12.5% citation, the only brand outside Retell AI where visibility and citation are in alignment rather than diverging sharply. |
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| 3 |
bland.ai
|
12% | 0% | Google AI Mode |
Bland matches Synthflow at 12.5% visibility but holds a 0.0% citation rate, indicating Google AI Mode names it in responses without treating its domain as a citable source. |
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| 4 |
vapi.ai
|
12% | 0% | Google AI Mode |
Vapi shares the same 12.5% visibility and 0.0% citation profile as Bland and ElevenLabs, placing it in an identical mid-tier cluster with no differentiation on citation. |
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| 5 |
elevenlabs.io
|
12% | 0% | Google AI Mode |
ElevenLabs holds 12.5% visibility with 0.0% citations, the same profile as ranks three and four, making it statistically indistinguishable from those peers in this audit. |
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| 6 |
cresta.com
|
0% | 12% | Google AI Mode |
| 7 |
poly.ai
|
0% | 0% | Google AI Mode |
| 8 |
cognigy.com
|
0% | 0% | Google AI Mode |
| 9 |
sierra.ai
|
0% | 0% | Google AI Mode |
| 10 |
observe.ai
|
0% | 0% | Google AI Mode |
| 11 |
talkdesk.com
|
0% | 0% | Google AI Mode |
| 12 |
five9.com
|
0% | 0% | Google AI Mode |
| 13 |
livekit.io
|
0% | 0% | Google AI Mode |
| 14 |
play.ai
|
0% | 0% | Google AI Mode |
| 15 |
deepgram.com
|
0% | 0% | Google AI Mode |
| 16 |
hume.ai
|
0% | 0% | Google AI Mode |
| 17 |
kore.ai
|
0% | 0% | Google AI Mode |
| 18 |
amelia.ai
|
0% | 0% | Google AI Mode |
| 19 |
soundhound.com
|
0% | 0% | Google AI Mode |
| 20 |
gladia.io
|
0% | 0% | Google AI Mode |
Sources AI engines trust in this category
Across the 8 buyer-intent queries we ran on ai voice agents, 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.
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.
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.
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.
Get your own ai voice agents 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 ai voice agents AI visibility
Who leads AI visibility in the AI voice agents category?
Retell AI leads with 25.0% visibility and a 50.0% citation rate, both more than six times the category average of 3.8%. No other brand comes close on either metric.
What is the gap between the top brand and the rest of the field?
Retell AI sits at 25.0% visibility while the next four brands, Synthflow, Bland, Vapi, and ElevenLabs, each hold exactly 12.5%, with all other ranked brands at 0.0%.
Which brands are named in AI responses but not cited as sources?
Bland, Vapi, and ElevenLabs each have 12.5% visibility but 0.0% citation rates, meaning Google AI Mode references them in answers without linking to their domains.
Can a brand be cited as a source without being named visibly in AI responses?
Yes. Cresta holds a 12.5% citation rate despite 0.0% visibility, showing Google AI Mode uses its content as a reference while not featuring the brand name prominently in answers.
What sources does Google AI Mode anchor on for AI voice agent research?
The top cited sources include retellai.com, youtube.com, reddit.com, vellum.ai, synthflow.ai, lindy.ai, assembled.com, and callbotics.ai, combining brand-owned domains with community and aggregator content.
Which engine drives visibility for AI voice agent brands in this audit?
Google AI Mode is the top engine for every brand in the top 10, and the audit data covers no other engine, making it the sole measured source of AI visibility in this category.