September 2026 snapshot · 72 AI answers Leader emerging

Communications APIs (CPaaS): AI Visibility Ranking

APIs for SMS, voice, email, and verification in your product. Right now, Twilio is the brand AI assistants recommend most, with a Visibility Score of 85 and the #1 spot in 83% of answers. Head-to-head: Twilio vs Vonage →

These rankings are measured from what the three models know from training, not a live web search. When the models DO search the web, see which sources they cite. Methodology.

Twilio wins on instinct; Vonage gets considered, then passed over.

Twilio's 83% first-pick rate against Vonage's 3% tells the real story: both brands surface in 86% of answers, but only one actually gets chosen. Vonage is present without being preferred, a recognition problem more than an awareness problem. Claude amplifies the gap further, scoring Twilio at 95 versus Vonage at 88, while Gemini drops Vonage to 55, suggesting the consideration story gets worse as you move down the model stack.

AI-generated analysis of the September 2026 measurements.

#	Brand	Visibility Score	Trend (3 mo)	Mention rate	Avg. position	#1 pick rate	Models
1	Twilio	85 ±4.1	flat	86%	1.1	83%	ChatGPT #1 Claude #1 Gemini #1
2	Vonage	71 ±4.7	flat	86%	2.8	3%	ChatGPT #2 Claude #2 Gemini #2
3	Bird	51 ±4.7	flat	74%	4.1	1%	ChatGPT #4 Claude #3 Gemini #5
4	Sinch	46 ±5.4	flat	65%	4.0	0%	ChatGPT #3 Claude #4 Gemini #7
5	Plivo	43 ±3.9	▲ 6	58%	3.6	1%	ChatGPT #5 Claude #5 Gemini #3
6	Telnyx	29 ±4.5	flat	43%	4.3	7%	ChatGPT #7 Claude #6 Gemini #6
7	Infobip	28 ±5.5	flat	46%	4.9	0%	ChatGPT #6 Claude #10 Gemini #4
8	Bandwidth	14 ±3.5	flat	24%	5.0	0%	ChatGPT #8 Claude #7 Gemini #13
9	AWS	13 ±4.2	flat	24%	5.6	0%	ChatGPT #9 Claude #9 Gemini #9
10	AWS SNS	8 ±3.4	flat	13%	4.4	0%	ChatGPT Claude #8 Gemini #12
11	SignalWire	6 ±2.4	flat	7%	2.0	3%	ChatGPT Claude Gemini #8
12	Azure Communication Services	5 ±3.4	flat	7%	3.8	0%	ChatGPT #12 Claude Gemini #10
13	SendGrid	4 ±2.7	flat	6%	4.3	0%	ChatGPT #11 Claude Gemini #11
14	ClickSend	3 ±2.1	flat	7%	6.8	0%	ChatGPT #13 Claude #11 Gemini #14
15	Postmark	2 ±1.4	flat	6%	6.8	0%	ChatGPT #10 Claude #12 Gemini

The ± under each score is the reliability band: how much the number would move if we re-ran the identical measurement. It is tight because each prompt is sampled multiple times. It is not the same as how much the ranking depends on which prompts we ask — a separate, wider figure shown on hover.

Just below the cutoff: Amazon SNS (2.1), Microsoft Azure Communication Services (2.1), Agora (1.9), 360dialog (1.7), Microsoft Azure (1.5). 54 brands were scored in this category; the leaderboard shows the top 15.

Visibility Score: position-weighted presence across all measured answers, 0 to 100. A score of 100 means the brand was the first recommendation in every answer. Every point in a trend line is a live monthly measurement; there is no modeled or backfilled history. Full methodology.

Openness 15/100: the share of this category's recommendation weight not held by the leader.

Compare brands in Communications APIs (CPaaS) head-to-head → · Explore the prompt tree →

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Do the models agree?

Per-model Visibility Scores for the top 10. A long gray bar means the three assistants disagree about the brand. Hover a row for exact values.

ChatGPT Claude Gemini

Where they land in the answer

When a brand is mentioned, where does it appear? Box shows the middle 50% of positions, the thick line is the median, whiskers are the extremes. Hover a row for the detail.