Dialogflow vs Haystack vs Stack AI vs BlandAI

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

Your tool
Dialogflow
vs
Competitor 1
Haystack
Competitor 2
Stack AI
Competitor 3
BlandAI
Compare
4 tools · best value per row highlighted
Your tool Dialogflow
cloud.google.com
Google's conversational AI
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Competitor Haystack
haystack.deepset.ai
Haystack is an open-source AI orchestration framework from deepset for building production-grade LLM applications and agents.
Make main Remove
Competitor Stack AI
stack-ai.com
Connect AI models visually
Make main Remove
Competitor BlandAI
bland.ai
BlandAI gives you voice AI for phone calls at massive scale—without routing through OpenAI or Anthropic
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
48Mvisits/mo
—
6.3Kvisits/mo
224.7Kvisits/mo
MoM change
▲ 1.9%
—
▼ 57.9%
▲ 24.7%
6-month growth
+1.6%
—
-93.7%
-1.7%
Global rank web
#560
—
#1,700,092
#203,385
Avg. last 3 months
48M
—
13.9K
201.9K
Bounce rate lower is better
35%
—
39%
39%
Pages / visit
10.4
—
1.8
3.8
Visit duration
7m 47s
—
14s
2m 10s
Traffic sources
● Direct 67% · ● Referral 29%
—
—
● Direct 75% · ● Referral 22%
DialogflowHaystackStack AIBlandAI
013.2M26.5M39.7M52.9MDialogflow · 44.3MDialogflow · 45.8MDialogflow · 47.8MDialogflow · 47.2MDialogflow · 52.9MDialogflow · 49.9MDialogflow · 48.8MDialogflow · 47.1MDialogflow · 48MStack AI · 143.4KStack AI · 153.7KStack AI · 167.9KStack AI · 160KStack AI · 99.4KStack AI · 35.9KStack AI · 17.4KStack AI · 20.6KStack AI · 14.9KStack AI · 6.3KBlandAI · 168.1KBlandAI · 187.4KBlandAI · 217.9KBlandAI · 179.5KBlandAI · 228.5KBlandAI · 244KBlandAI · 225.9KBlandAI · 200.7KBlandAI · 180.2KBlandAI · 224.7K1K10K100K1M10M100MDialogflow · 44.3MDialogflow · 45.8MDialogflow · 47.8MDialogflow · 47.2MDialogflow · 52.9MDialogflow · 49.9MDialogflow · 48.8MDialogflow · 47.1MDialogflow · 48MStack AI · 143.4KStack AI · 153.7KStack AI · 167.9KStack AI · 160KStack AI · 99.4KStack AI · 35.9KStack AI · 17.4KStack AI · 20.6KStack AI · 14.9KStack AI · 6.3KBlandAI · 168.1KBlandAI · 187.4KBlandAI · 217.9KBlandAI · 179.5KBlandAI · 228.5KBlandAI · 244KBlandAI · 225.9KBlandAI · 200.7KBlandAI · 180.2KBlandAI · 224.7KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
—
Freemium
Freemium
Starting price
Free tier
—
Free tier
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Free tier
–
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Free trial
–
–
API access
–
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Plans
—
—
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Start $0.14/moBuild $0.12/moEnterprise Custom/mo
Capabilities input → output
Input
AudioText
CodeDocuments
DataDocumentsText
AudioText
Output
Apps
Apps
Apps
AppsAudio
Skill level
Advanced
Advanced
Intermediate
Advanced
Categories
Business & MarketingChatbots & CompanionsAI Call CenterAI Chatbot+1 more
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Business & MarketingAI Call CenterAI Customer Service
Tasks what each tool can do · 0 shared · core   partial
Tasks covered
7
7
7
10
Agents
–
–
Agent creation
–
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Call center automation
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Customer support
–
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Call agents
–
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Chatbot building
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–
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Chatbots
–
–
–
LLM development
–
–
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No-code
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–
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RAG
–
–
–
Voice agents
–
–
–
Workflows
–
–
–
APIs
–
–
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Business automation
–
–
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Call answering
–
–
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Calls
–
–
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Customer support automation
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–
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Customer support chatbot
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–
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Developer tools
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–
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Process automation
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–
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Agent memory
–
–
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Chatbot integration
–
–
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Customer calls
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Finance workflow automation
–
–
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Fine-Tuning
–
–
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Self hosted
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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
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.