AI Visibility Index · July 2026

Voice AI: Deepgram, ElevenLabs, OpenAI lead the AI rankings

How visibly ChatGPT, Claude, Gemini & Grok recommend each voice ai brand, across 13continuously re-polled “best X” leaderboards. Grades use the same A+–D scale as the brand checker; every ranking links to its full audit trail.

#	Brand	Grade	#1s	Podiums	Boards	Models	Best result
1	Deepgram	A+	4	6	7	4/4	#1 · AI transcription API
2	ElevenLabs	A+	1	3	8	4/4	#1 · AI voice cloning API
3	OpenAI	A+	1	2	10	4/4	#1 · open-source speech-to-text model
4	Retell AI	A+	1	2	3	4/4	#1 · AI voice agent for customer support
5	Vapi	A+	1	2	3	4/4	#1 · voice agent platform
6	Cartesia	A+	1	2	2	4/4	#1 · text-to-speech API for voice agents
7	LiveKit	A+	1	1	2	4/4	#1 · realtime infrastructure for voice AI
8	Groq	A	1	1	1	3/4	#1 · cheap speech-to-text API
9	Microsoft Dragon Medical SpeechKit	A+	1	1	1	4/4	#1 · speech-to-text API for medical transcription
10	Wispr Flow	A+	1	1	1	4/4	#1 · AI voice dictation tool
11	AssemblyAI	B	—	5	6	4/4	#2 · AI transcription API
12	NVIDIA Riva	B	—	2	4	4/4	#2 · open-source speech-to-text model
13	AWS HealthScribe	B	—	2	3	4/4	#3 · speech-to-text API for call centers
14	Speechmatics	B	—	1	6	4/4	#3 · real-time speech-to-text API
15	Cloudflare Realtime	B	—	1	2	2/4	#2 · cheap speech-to-text API
16	Pipecat	B	—	1	2	4/4	#2 · realtime infrastructure for voice AI
17	LiveKit Agents	B	—	1	2	3/4	#3 · voice agent platform
18	Superwhisper	B	—	1	1	4/4	#2 · AI voice dictation tool
19	Aqua Voice	B	—	1	1	2/4	#3 · AI voice dictation tool
20	Daily	B	—	1	1	2/4	#3 · realtime infrastructure for voice AI
21	Fish Audio	B	—	1	1	3/4	#3 · AI voice cloning API
22	PolyAI	B	—	1	1	3/4	#3 · AI voice agent for customer support
23	Google Cloud Speech-to-Text	D	—	—	5	1/4	#6 · real-time speech-to-text API
24	Gladia	C	—	—	4	2/4	#5 · real-time speech-to-text API
25	Chatterbox	C	—	—	2	3/4	#4 · AI voice cloning API
26	Inworld	D	—	—	2	1/4	#5 · text-to-speech API for voice agents
27	Bland AI	C	—	—	2	2/4	#6 · AI voice agent for customer support
28	faster-whisper	D	—	—	2	1/4	#7 · speech-to-text API for call centers
29	Google Cloud Chirp	D	—	—	2	1/4	#8 · speech-to-text API for medical transcription
30	Synthflow	C	—	—	2	2/4	#8 · voice agent platform

+ 30 more ranked brands below the top 30.

Method: brands are rolled up by homepage domain and ranked by #1 finishes, podiums, then board coverage across this industry's leaderboards — data updated 2026-07-15. All industries → · Source: modelsagree.com · CC BY 4.0