Speechmatics | AI Voice Agents vs Universal-3 Pro by AssemblyAI vs OpenAI Whisper API vs Rev

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Speechmatics | AI Voice Agents
vs
Competitor 1
Universal-3 Pro by AssemblyAI
Competitor 2
OpenAI Whisper API
Competitor 3
Rev
Compare
4 tools · best value per row highlighted
Your tool Speechmatics | AI Voice Agents
speechmatics.com
Sub-second speech-to-text across 55+ languages with AI voice agents
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Competitor Universal-3 Pro by AssemblyAI
assemblyai.com
Speech-to-text API built for accuracy at scale
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Competitor OpenAI Whisper API
platform.openai.com
OpenAI Whisper API is the speech-to-text service developers call to convert recorded audio into text.
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Competitor Rev
rev.com
Rev is an investigative intelligence and legal transcription service that turns recordings, documents, and photos into citable findings.
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Traffic estimated monthly website traffic
Monthly visits
276.5Kvisits/mo
457.8Kvisits/mo
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MoM change
▼ 8.9%
▼ 12.0%
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6-month growth
+26.7%
-16.3%
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Global rank web
#155,675
#87,404
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Avg. last 3 months
278.4K
518.4K
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Bounce rate lower is better
43%
37%
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Pages / visit
3.2
4.0
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Visit duration
1m 55s
3m 12s
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Traffic sources
● Direct 87% · ● Referral 12%
● Direct 91% · ● Referral 8%
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Speechmatics | AI Voice AgentsUniversal-3 Pro by AssemblyAIOpenAI Whisper APIRev
0157.2K314.4K471.5K628.7KSpeechmatics | AI Voice Agents · 170.8KSpeechmatics | AI Voice Agents · 190.6KSpeechmatics | AI Voice Agents · 185.2KSpeechmatics | AI Voice Agents · 218.3KSpeechmatics | AI Voice Agents · 202KSpeechmatics | AI Voice Agents · 206.5KSpeechmatics | AI Voice Agents · 255.1KSpeechmatics | AI Voice Agents · 303.5KSpeechmatics | AI Voice Agents · 276.5KUniversal-3 Pro by AssemblyAI · 568.9KUniversal-3 Pro by AssemblyAI · 565KUniversal-3 Pro by AssemblyAI · 595.5KUniversal-3 Pro by AssemblyAI · 506.7KUniversal-3 Pro by AssemblyAI · 547.2KUniversal-3 Pro by AssemblyAI · 590.1KUniversal-3 Pro by AssemblyAI · 628.7KUniversal-3 Pro by AssemblyAI · 577KUniversal-3 Pro by AssemblyAI · 520.4KUniversal-3 Pro by AssemblyAI · 457.8K100K1MSpeechmatics | AI Voice Agents · 170.8KSpeechmatics | AI Voice Agents · 190.6KSpeechmatics | AI Voice Agents · 185.2KSpeechmatics | AI Voice Agents · 218.3KSpeechmatics | AI Voice Agents · 202KSpeechmatics | AI Voice Agents · 206.5KSpeechmatics | AI Voice Agents · 255.1KSpeechmatics | AI Voice Agents · 303.5KSpeechmatics | AI Voice Agents · 276.5KUniversal-3 Pro by AssemblyAI · 568.9KUniversal-3 Pro by AssemblyAI · 565KUniversal-3 Pro by AssemblyAI · 595.5KUniversal-3 Pro by AssemblyAI · 506.7KUniversal-3 Pro by AssemblyAI · 547.2KUniversal-3 Pro by AssemblyAI · 590.1KUniversal-3 Pro by AssemblyAI · 628.7KUniversal-3 Pro by AssemblyAI · 577KUniversal-3 Pro by AssemblyAI · 520.4KUniversal-3 Pro by AssemblyAI · 457.8KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
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Free Trial
Starting price
Free tier
Free tier
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$25.49per month
Free tier
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Free trial
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API access
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Plans
Free FreePro $0.13
Free Trial FreePay-as-you-go Universal-2 $0.15/moPay-as-you-go Universal-3.5 Pro $0.21/mo
gpt-transcribe Customgpt-4o-transcribe Customgpt-4o-mini-transcribe Customgpt-realtime-whisper Custom
Human Transcription $1.99AI Transcription subscription (annual) $25.49/moAI Transcription subscription (monthly) $29.99/moGlobal Subtitles $6.49
Capabilities input → output
Input
Audio
Audio
Audio
AudioDocumentsImagesVideo
Output
Text
Text
Text
DocumentsText
Skill level
Advanced
Advanced
Advanced
Intermediate
Categories
Development & CodeVoice & SpeechAI APIAI Transcription
Development & CodeVoice & SpeechAI APIAI Transcription
Development & CodeVoice & SpeechAI APIAI Transcription
Legal & FinanceVoice & SpeechWriting & ContentAI Legal Assistant+2 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
3
3
8
7
Transcription
APIs
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Podcast transcription
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Voice agents
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Speech recognition
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Video subtitles
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Audio translation
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Call transcriptions
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Developer tools
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Document analysis
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Legal documents review
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Legal documents summaries
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Legal drafting
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Meeting transcription
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Multilingual subtitle creation
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
0
Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.