Dialogflow vs Vapi vs Microsoft Copilot Studio 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
Microsoft Copilot Studio
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 Microsoft Copilot Studio
microsoft.com
Builders can add conversational chat or voice agents, give them autonomous capabilities such as planning and escalating work items, and connect them to business data through more than 1,500 pre-bui...
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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
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MoM change
▲ 1.9%
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6-month growth
+1.6%
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Global rank web
#560
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Avg. last 3 months
48M
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Bounce rate lower is better
35%
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Pages / visit
10.4
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Visit duration
7m 47s
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Traffic sources
● Direct 67% · ● Referral 29%
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DialogflowVapiMicrosoft Copilot StudioRetell AI
013.2M26.5M39.7M52.9MDialogflow · 44.3MDialogflow · 45.8MDialogflow · 47.8MDialogflow · 47.2MDialogflow · 52.9MDialogflow · 49.9MDialogflow · 48.8MDialogflow · 47.1MDialogflow · 48M10M100MDialogflow · 44.3MDialogflow · 45.8MDialogflow · 47.8MDialogflow · 47.2MDialogflow · 52.9MDialogflow · 49.9MDialogflow · 48.8MDialogflow · 47.1MDialogflow · 48MNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Freemium
Freemium
Free Trial
Paid
Starting price
Free tier
$29per month
$18per month
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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
Microsoft 365 Business Standard with Copilot $23.50/moMicrosoft 365 Copilot Business $18/moMicrosoft 365 Business Premium with Copilot $32/mo
Pay as you go CustomEnterprise Custom
Capabilities input → output
Input
AudioText
AudioText
DataDocumentsText
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
Chatbots & CompanionsDevelopment & CodeProductivity & OfficeAI Agent+3 more
Business & MarketingVoice & SpeechAI Call CenterAI Customer Service+1 more
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
7
11
11
10
Voice agents
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Agent creation
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Call center automation
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Call agents
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Customer support
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Chatbot building
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Chatbots
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Call answering
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Calls
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Customer calls
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Customer support chatbot
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Agents
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No-code
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APIs
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Agent management
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Developer tools
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MCP
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Workflows
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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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Voice chatting
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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
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0
Reviews
0
0
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Prompts
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.