Dialogflow vs Vapi vs AssistLoop vs Retell AI

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

Your tool
Dialogflow
vs
Competitor 1
Vapi
Competitor 2
AssistLoop
Competitor 3
Retell AI
Compare
4 tools · best value per row highlighted
Your tool Dialogflow
cloud.google.com
Google's conversational AI
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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 AssistLoop
assistloop.ai
Businesses wanting AI chatbots for customer support can train AssistLoop on their own knowledge base and have it answer customer questions around the clock
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Competitor Retell AI
retellai.com
Retell AI is a voice agent platform for automating phone calls.
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Traffic estimated monthly website traffic
Monthly visits
48Mvisits/mo
—
3.2Kvisits/mo
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MoM change
▲ 1.9%
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▲ 88.8%
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6-month growth
+1.6%
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-16.1%
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Global rank web
#560
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#10,702,450
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Avg. last 3 months
48M
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2.5K
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Bounce rate lower is better
35%
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45%
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Pages / visit
10.4
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1.5
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Visit duration
7m 47s
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—
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Traffic sources
● Direct 67% · ● Referral 29%
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DialogflowVapiAssistLoopRetell AI
013.2M26.5M39.7M52.9MDialogflow · 44.3MDialogflow · 45.8MDialogflow · 47.8MDialogflow · 47.2MDialogflow · 52.9MDialogflow · 49.9MDialogflow · 48.8MDialogflow · 47.1MDialogflow · 48MAssistLoop · 627AssistLoop · 1KAssistLoop · 3.1KAssistLoop · 3.8KAssistLoop · 173AssistLoop · 1.3KAssistLoop · 2.6KAssistLoop · 1.7KAssistLoop · 3.2K1001K10K100K1M10M100MDialogflow · 44.3MDialogflow · 45.8MDialogflow · 47.8MDialogflow · 47.2MDialogflow · 52.9MDialogflow · 49.9MDialogflow · 48.8MDialogflow · 47.1MDialogflow · 48MAssistLoop · 627AssistLoop · 1KAssistLoop · 3.1KAssistLoop · 3.8KAssistLoop · 173AssistLoop · 1.3KAssistLoop · 2.6KAssistLoop · 1.7KAssistLoop · 3.2KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Paid
Starting price
Free tier
$29per month
$25per month · free tier available
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Free tier
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Free trial
–
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API access
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Plans
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No Success Package FreeCore $29/moPro $999/moPremier Custom
Free FreeBasic $25/moPro $109/moBusiness $325/mo
Pay as you go CustomEnterprise Custom
Capabilities input → output
Input
AudioText
AudioText
DocumentsTextWeb pages
AudioText
Output
Apps
AppsAudio
Apps
AppsAudio
Skill level
Advanced
Advanced
Intermediate
Intermediate
Categories
Business & MarketingChatbots & CompanionsAI Call CenterAI Chatbot+1 more
Business & MarketingVoice & SpeechAI Call CenterAI Customer Service+1 more
Business & MarketingChatbots & CompanionsAI ChatbotAI Customer Service
Business & MarketingVoice & SpeechAI Call CenterAI Customer Service+1 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
7
11
7
10
Customer support
Call center automation
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Call agents
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Chatbots
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Voice agents
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Chatbot building
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Customer support chatbot
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Agent creation
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Call answering
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Calls
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Customer calls
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APIs
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–
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Developer tools
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–
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FAQ chatbot
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Knowledge-driven chatting
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Website to chatbot
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Agent testing
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Chatbot integration
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Customer support automation
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SMS marketing
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 1
▲ 0
▲ 0
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
0
0
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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.