Haystack vs OpenAI Codex CLI vs Semantic Kernel vs Pipecat

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

Your tool
Haystack
vs
Competitor 1
OpenAI Codex CLI
Competitor 2
Semantic Kernel
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 OpenAI Codex CLI
developers.openai.com
OpenAI Codex CLI brings the Codex coding agent to the terminal and to scripts.
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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 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
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Bounce rate lower is better
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Pricing
Model
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Paid
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Free
Starting price
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Free
Free tier
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Free trial
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API access
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Plans
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GPT-6-Astra $10GPT-6.1-Sol $2GPT-6-Luna $0.10GPT-Live-1 $0.05/minute+1 more
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Open source Free
Capabilities input → output
Input
CodeDocuments
CodeImagesText
CodeText
AudioTextVideo
Output
Apps
Code
Apps
AudioText
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Developer Tools
Development & CodeProductivity & OfficeVoice & SpeechAI Agent+2 more
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
5
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9
Developer tools
Agent creation
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Agents
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LLM development
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Coding
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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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Agent memory
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Agent testing
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Call agents
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Community on aitoolstime
Rating
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Upvotes
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Saves
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Reviews
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Prompts
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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.