AI Visibility Rankings · Infrastructure

Top 20 telephony api platforms by AI search visibility (2026)

Developer platforms used to add voice, SMS, verification, and programmable communications capabilities into apps, products, and customer workflows. Ranked by a composite score: 70% visibility (% of AI answers naming the brand) + 30% citation rate (% citing the brand's domain). Full methodology →

Refreshed Jun 08, 2026

Avg visibility across category

Avg citation rate

20/20

Brands successfully audited

At a glance

Category leader Twilio 38% visibility · named in 3 of 8 AI answers

Most cited brand Telnyx 62% citation rate · the AI's most-trusted source brand in telephony api platforms

Top cited domain retellai.com Referenced by AI across the telephony api platforms query set — the highest-leverage PR target in this category

Visibility spread 38pp Gap between top and bottom of the ranking · 16 brands at 0% (invisible to the AI)

What we observed in this categoryauto-generated

Telnyx leads the Telephony API platforms category with a composite score of 36.2, despite having lower raw visibility (25.0%) than Twilio (37.5%). The gap matters because Telnyx achieves a citation rate of 62.5% — five times Twilio's 12.5% — meaning Google AI Mode not only mentions Telnyx more proportionally but treats it as a trusted, linkable source. Twilio's higher visibility without corresponding citation depth suggests it is named in AI responses but not anchored as an authoritative reference.

The visibility-citation divergence is stark across this category. Plivo ranks fifth with zero visibility yet earns a 25.0% citation rate, making it more cited than it is named — a pattern suggesting AI pulls from Plivo's domain as a source while not consistently surfacing the brand in direct recommendations. Conversely, Twilio and RingCentral both hold 12.5% citation rates despite visibility scores of 37.5% and 25.0% respectively, indicating they are mentioned frequently but rarely linked as primary evidence.

Google AI Mode is the dominant engine across all 20 brands in this audit, with no brand registering a different top engine. The top cited sources include retellai.com, getvoip.com, serviceagent.ai, and skyswitch.com — third-party review, aggregator, and AI-tooling sites — alongside brand-owned domains telnyx.com and plivo.com. This suggests Google AI Mode is anchoring responses on comparison and vertical-review content rather than vendor documentation, which explains why brands with strong third-party coverage convert mentions into citations more effectively.

Movers & shakers since last refresh

Biggest visibility risers

Twilio 0% → 38% · rank #0 → #2
+38pp
Telnyx 0% → 25% · rank #0 → #1
+25pp
RingCentral 0% → 25% · rank #0 → #3
+25pp

The ranking

#	Brand	Visibility	Citation	Top engine
1	Telnyx telnyx.com	25%	62%	Google AI Mode
Telnyx holds the top composite score (36.2) driven by a 62.5% citation rate — 9x the category average of 6.9% — despite visibility of only 25.0%.
2	Twilio twilio.com	38%	12%	Google AI Mode
Twilio leads all brands in raw visibility at 37.5% but converts that into only a 12.5% citation rate, matching brands with far lower presence scores.
3	RingCentral ringcentral.com	25%	12%	Google AI Mode
RingCentral matches Telnyx's 25.0% visibility but achieves only a 12.5% citation rate, resulting in a composite score (21.2) nearly half of Telnyx's.
4	Vonage vonage.com	12%	12%	Google AI Mode
Vonage sits at 12.5% visibility and 12.5% citation — both at the category floor for ranked brands — yielding a composite score of exactly 12.5.
5	Plivo plivo.com	0%	25%	Google AI Mode
Plivo is the category's clearest citation-over-visibility outlier: 0.0% visibility yet a 25.0% citation rate, suggesting AI uses plivo.com as a reference source without naming it in answers.
6	Infobip infobip.com	0%	12%	Google AI Mode
7	Sinch sinch.com	0%	0%	Google AI Mode
8	Bird bird.com	0%	0%	Google AI Mode
9	Bandwidth bandwidth.com	0%	0%	Google AI Mode
10	Kaleyra kaleyra.com	0%	0%	Google AI Mode
11	Clickatell clickatell.com	0%	0%	Google AI Mode
12	Telesign telesign.com	0%	0%	Google AI Mode
13	CM.com cm.com	0%	0%	Google AI Mode
14	Route Mobile routemobile.com	0%	0%	Google AI Mode
15	EnableX enablex.io	0%	0%	Google AI Mode
16	SignalWire signalwire.com	0%	0%	Google AI Mode
17	Webex Connect webexconnect.io	0%	0%	Google AI Mode
18	MSG91 msg91.com	0%	0%	Google AI Mode
19	Zenvia zenvia.com	0%	0%	Google AI Mode
20	Telstra Messaging API telstra.com.au	0%	0%	Google AI Mode

Sources AI engines trust in this category

Across the 8 buyer-intent queries we ran on telephony api 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.

retellai.comyoutube.comtelnyx.comgetvoip.comserviceagent.aiplivo.comskyswitch.comcloudtalk.io

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 telephony api 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.

Audit your telephony api platforms brand → Browse all rankings Methodology →

Frequently asked about telephony api platforms AI visibility

Who leads AI visibility in Telephony API platforms?

Telnyx leads with the highest composite score of 36.2, driven primarily by a 62.5% citation rate. Twilio has higher raw visibility (37.5%) but a significantly lower composite score of 30.0.

Which brand is most cited by Google AI Mode in this category?

Telnyx is the most cited brand with a 62.5% citation rate, nearly five times Twilio's and RingCentral's shared rate of 12.5%.

What sources does AI cite most for Telephony API platform research?

Google AI Mode anchors responses on third-party and aggregator sources including retellai.com, getvoip.com, serviceagent.ai, and skyswitch.com, alongside brand-owned domains telnyx.com and plivo.com.

Are there brands that get cited without being named in AI answers?

Yes — Plivo has a 0.0% visibility score but a 25.0% citation rate, indicating Google AI Mode references its domain as a source without consistently naming it as a recommended platform.

How concentrated is AI visibility across the 20 brands in this category?

Visibility is highly concentrated: the category average is just 5.0%, and brands ranked 7 through 10 all have 0.0% visibility and 0.0% citation, meaning the top three brands account for the majority of AI presence.

Which engine dominates AI visibility for Telephony API platforms?

Google AI Mode is the top-performing engine for every brand across all 20 audited in this category, with no brand registering a different primary engine.