Deepgram Voice Agent API vs Defapi vs Vapi vs Hume EVI

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

Your tool
Deepgram Voice Agent API
vs
Competitor 1
DDefapi
Competitor 2
Vapi
Competitor 3
Hume EVI
Compare
4 tools · best value per row highlighted
Your tool Deepgram Voice Agent API
deepgram.com
The Deepgram Voice Agent API is one real-time API that combines speech recognition, language model orchestration and speech synthesis, so developers do not have to stitch separate services together.
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Competitor DDefapi
defapi.org
You know how managing multiple AI provider integrations usually means maintaining separate codebases for each vendor
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Competitor Vapi
vapi.ai
Vapi is a developer platform for building, testing and deploying voice AI agents that talk to customers on the phone.
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Competitor Hume EVI
hume.ai
Hume EVI, the Empathic Voice Interface, is a voice AI API for building agents that pick up on how a person sounds as well as what they say.
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Traffic estimated monthly website traffic
Monthly visits
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2.4Kvisits/mo
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MoM change
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▼ 42.6%
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6-month growth
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-86.2%
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Global rank web
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#4,650,820
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Avg. last 3 months
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4.8K
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Bounce rate lower is better
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36%
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Pages / visit
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1.4
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Visit duration
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7s
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Traffic sources
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Deepgram Voice Agent APIDefapiVapiHume EVI
04.4K8.8K13.3K17.7KDefapi · 11.1KDefapi · 13KDefapi · 12.4KDefapi · 17.7KDefapi · 9.4KDefapi · 6.2KDefapi · 7.6KDefapi · 4.2KDefapi · 2.4K1K10K100KDefapi · 11.1KDefapi · 13KDefapi · 12.4KDefapi · 17.7KDefapi · 9.4KDefapi · 6.2KDefapi · 7.6KDefapi · 4.2KDefapi · 2.4KDec '25Jan '26FebMarAprMayJunJulAug
Pricing
Model
Paid
Paid
Freemium
Freemium
Starting price
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$29per month
$3per month · free tier available
Free tier
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Free trial
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API access
Plans
Pay As You Go CustomGrowth $4,000/yrEnterprise Custom
Gemini 3.1 Pro Preview $1/$6/per requestClaude Sonnet 4.6 $1.5/$7.5/per requestClaude Opus 4.6 $2.5/$12.5/per requestSora 2 Stable $0.175+/per request+2 more
No Success Package FreeCore $29/moPro $999/moPremier Custom
Free FreeStarter $3/moCreator $7/moPro $70/mo+3 more
Capabilities input → output
Input
TextAudio
ImagesTextAudio
TextAudio
TextAudio
Output
TextAudio
AudioImagesText
AudioApps
TextAudio
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Business & MarketingDevelopment & CodeVoice & SpeechAI API+2 more
Development & CodeAI API
Business & MarketingVoice & SpeechAI Call CenterAI Customer Service+1 more
Development & CodeVoice & SpeechAI APIAI Text-to-Speech+2 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
11
4
11
9
APIs
Voice agents
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Agent creation
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Developer tools
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Call center automation
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Text to speech
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Voice
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Voice assistance
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Customer calls
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API integrations
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API management
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Call agents
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Customer support
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Transcription
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Voice cloning
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API security
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Agent testing
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Call answering
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Calls
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Sentiment analysis
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Speech to speech
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
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Upvotes
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Saves
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Reviews
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Prompts
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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.