Haystack vs Stack AI vs Activepieces vs Pipecat

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

Your tool
Haystack
vs
Competitor 1
Stack AI
Competitor 2
Activepieces
Competitor 3
Pipecat
Compare
4 tools · best value per row highlighted
Your tool Haystack
haystack.deepset.ai
Haystack is an open-source AI orchestration framework from deepset for building production-grade LLM applications and agents.
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Competitor Stack AI
stack-ai.com
Connect AI models visually
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Competitor Activepieces
activepieces.com
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Competitor Pipecat
pipecat.ai
Pipecat is an open-source Python framework for building voice and multimodal AI agents that talk in real time.
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Traffic estimated monthly website traffic
Monthly visits
—
6.3Kvisits/mo
221.7Kvisits/mo
—
MoM change
—
▼ 57.9%
▲ 1.8%
—
6-month growth
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-93.7%
-10.0%
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Global rank web
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#1,700,092
#174,361
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Avg. last 3 months
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13.9K
226.6K
—
Bounce rate lower is better
—
39%
39%
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Pages / visit
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1.8
3.8
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Visit duration
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14s
2m 39s
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Traffic sources
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—
● Direct 74% · ● Referral 24%
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HaystackStack AIActivepiecesPipecat
061.6K123.1K184.7K246.2KStack 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 · 6.3KActivepieces · 209.7KActivepieces · 239.2KActivepieces · 236KActivepieces · 187.9KActivepieces · 246.2KActivepieces · 223.6KActivepieces · 218.4KActivepieces · 240.1KActivepieces · 217.9KActivepieces · 221.7K1K10K100K1MStack 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 · 6.3KActivepieces · 209.7KActivepieces · 239.2KActivepieces · 236KActivepieces · 187.9KActivepieces · 246.2KActivepieces · 223.6KActivepieces · 218.4KActivepieces · 240.1KActivepieces · 217.9KActivepieces · 221.7KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
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Freemium
Freemium
Free
Starting price
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Free tier
$20per month · free tier available
Free
Free tier
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Free trial
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–
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API access
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–
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Plans
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Free FreePlus $20/moTeam $200/mo
Open source Free
Capabilities input → output
Input
CodeDocuments
DataDocumentsText
Text
AudioTextVideo
Output
Apps
Apps
Apps
AudioText
Skill level
Advanced
Intermediate
Intermediate
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeAI AgentAI Workflow+1 more
Productivity & OfficeAI AgentAI Workflow
Development & CodeProductivity & OfficeVoice & SpeechAI Agent+2 more
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
5
5
4
9
Agents
Agent creation
No-code
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Workflows
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Developer tools
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LLM development
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–
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Voice agents
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Voice
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Voice assistance
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Agent collaboration
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–
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Agent memory
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–
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Agent testing
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Call agents
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–
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Finance workflow automation
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–
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 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.