Universal-3 Pro by AssemblyAI vs HappySRT vs Soniox vs WhisperAPI
Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.
Your tool
Universal-3 Pro by AssemblyAI
vs Universal-3 Pro by AssemblyAI
Competitor 1
HappySRT
HappySRT
Competitor 2
Soniox
Soniox
Competitor 3
WhisperAPI
WhisperAPICompare
4 tools · best value per row highlighted
Your tool
Universal-3 Pro by AssemblyAI
Universal-3 Pro by AssemblyAI
assemblyai.com
Speech-to-text API built for accuracy at scale
Competitor
Soniox
Soniox
soniox.com
Soniox is a speech AI platform that offers real-time speech-to-text, text-to-speech and speech translation through one API.
Traffic estimated monthly website traffic
Monthly visits
457.8Kvisits/mo
234visits/mo
—
27.3Kvisits/mo
MoM change
▼ 12.0%
▼ 82.4%
—
▲ 10.3%
6-month growth
-16.3%
—
—
+41.8%
Global rank web
#87,404
#11,961,777
—
#1,130,497
Avg. last 3 months
518.4K
794
—
25.6K
Bounce rate lower is better
37%
72%
—
40%
Pages / visit
4.0
1.1
—
1.7
Visit duration
3m 12s
—
—
14s
Traffic sources
● Direct 91% · ● Referral 8%
—
—
—
Universal-3 Pro by AssemblyAIHappySRTSonioxWhisperAPI
Pricing
Model
Freemium
Free
Paid
Freemium
Starting price
Free tier
Free
—
$10per month · free tier available
Free tier
–
Free trial
–
–
API access
–
–
Plans
Free Trial FreePay-as-you-go Universal-2 $0.15/moPay-as-you-go Universal-3.5 Pro $0.21/mo
—
Speech-to-Text async $0.10Speech-to-Text real-time $0.12Text-to-Speech $0.70
Free Trial FreePay-As-You-Go (40 credits) $10Pay-As-You-Go (100 credits) $20Pay-As-You-Go (200 credits) $30+1 more
Capabilities input → output
Input
Audio
AudioVideo
AudioText
AudioVideo
Output
Text
Text
AudioText
Text
Skill level
Advanced
Beginner-friendly
Advanced
Advanced
Categories
Tasks what each tool can do · 1 shared · core partial
Tasks covered
3
8
9
5
Transcription
APIs
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Video transcription
–
–
Translations
–
–
Podcast transcription
–
–
Audio video transcription
–
–
–
Live translations
–
–
–
Text to speech
–
–
–
Video subtitles
–
–
–
Audio translation
–
–
–
Multilingual subtitle creation
–
–
–
Summarizing
–
–
–
Voice cloning
–
–
–
YouTube transcription
–
–
–
Developer tools
–
–
–
Speech to speech
–
–
–
Subtitle translation
–
–
–
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
–
–
–
–
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.