Vapi vs LangChain vs Semantic Kernel vs CloudTalk | AI Voice Agents

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

Your tool
Vapi
vs
Competitor 1
LangChain
Competitor 2
Semantic Kernel
Competitor 3
CloudTalk | AI Voice Agents
Compare
4 tools · best value per row highlighted
Your tool 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 LangChain
langchain.com
Framework for building with large language models
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Competitor Semantic Kernel
learn.microsoft.com
Semantic Kernel is a lightweight, open-source development kit from Microsoft for building AI agents and adding AI models to existing C#, Python or Java codebases.
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Competitor CloudTalk | AI Voice Agents
cloudtalk.io
CloudTalk AI Voice Agents answer and make phone calls around the clock and sound natural doing it.
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Traffic estimated monthly website traffic
Monthly visits
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3.4Mvisits/mo
—
746.4Kvisits/mo
MoM change
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▲ 0.7%
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▲ 24.7%
6-month growth
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+21.0%
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+96.5%
Global rank web
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#13,384
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#59,084
Avg. last 3 months
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3.3M
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606.8K
Bounce rate lower is better
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42%
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35%
Pages / visit
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6.2
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5.2
Visit duration
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5m 29s
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4m 57s
Traffic sources
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● Direct 73% · ● Referral 24%
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● Direct 86% · ● Referral 8%
VapiLangChainSemantic KernelCloudTalk | AI Voice Agents
0850.7K1.7M2.6M3.4MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MCloudTalk | AI Voice Agents · 346.4KCloudTalk | AI Voice Agents · 314.5KCloudTalk | AI Voice Agents · 422.8KCloudTalk | AI Voice Agents · 379.8KCloudTalk | AI Voice Agents · 474.1KCloudTalk | AI Voice Agents · 436.3KCloudTalk | AI Voice Agents · 475.8KCloudTalk | AI Voice Agents · 598.4KCloudTalk | AI Voice Agents · 746.4K100K1M10MLangChain · 3MLangChain · 2.9MLangChain · 3.2MLangChain · 2.8MLangChain · 3.4MLangChain · 3.2MLangChain · 3.1MLangChain · 3.4MLangChain · 3.4MCloudTalk | AI Voice Agents · 346.4KCloudTalk | AI Voice Agents · 314.5KCloudTalk | AI Voice Agents · 422.8KCloudTalk | AI Voice Agents · 379.8KCloudTalk | AI Voice Agents · 474.1KCloudTalk | AI Voice Agents · 436.3KCloudTalk | AI Voice Agents · 475.8KCloudTalk | AI Voice Agents · 598.4KCloudTalk | AI Voice Agents · 746.4KNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Freemium
Freemium
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Freemium
Starting price
$29per month
$39per month · free tier available
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$25per month · free tier available
Free tier
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Free trial
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API access
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Plans
No Success Package FreeCore $29/moPro $999/moPremier Custom
Developer FreePlus $39/moEnterprise Custom/mo
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Plans Custom/mo
Capabilities input → output
Input
AudioText
CodeText
CodeText
AudioDocuments
Output
AppsAudio
Apps
Apps
Audio
Skill level
Advanced
Advanced
Advanced
Intermediate
Categories
Business & MarketingVoice & SpeechAI Call CenterAI Customer Service+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Business & MarketingAI Call CenterAI Customer Service
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
11
6
5
12
Agent creation
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Developer tools
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Agents
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Voice agents
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Call agents
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Call center automation
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LLM development
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Call answering
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Customer calls
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Customer support
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Calls
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Agent testing
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APIs
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Development
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Receptionist
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Sales calls
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Virtual receptionist
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API integrations
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Customer support automation
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Sales
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 1
▲ 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.