vioscaleAI
Comparison

Haystack vs ZenML

On the evidence we track, Haystack leads this comparison with a composite score of 66/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Haystack full profile →ZenML full profile →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
★Haystack66
ZenML61
Score
vioscaleAI score
Haystack66 / 100medium · 68%
ZenML61 / 100medium · 52%
Pricing
Free tier
Haystack✓
ZenML✓
Model
Haystackfreemium
ZenMLcommercial
Price level
Haystacklow
ZenMLlow
Transparent
Haystack✗
ZenML✗
Integrations
Count
Haystack9
ZenML60
Security
Certifications
Haystack–
ZenMLSOC 2 Type II, ISO 27001
Iso27001
Haystack–
ZenML✓
Scorecard
Haystack9.4
ZenML6.8
Soc2
Haystack–
ZenML✓
Trust center
Vulnerabilities
Reliability
Status page
Haystack–
ZenML✓
Adoption
Dependent repos
Haystack237
ZenML44
Github stars
Haystack26,738
ZenML5,615
Package downloads weekly
Haystack121,930
ZenML–
Activity
Commits last 30d
Haystack100
ZenML41
Release
Cadence days
Haystack2
ZenML15
History
Haystack20 items
ZenML20 items
License
Spdx
Language
Primary
HaystackPython
ZenMLPython
Market
Availability
Content
Faq
Haystack6 items
ZenML7 items

Capabilities

Feature-by-feature on the axes that matter for mlops & llmops tools. “-” means undocumented, not absent.

Core
Tool role
HaystackEnd-to-end ML platform
ZenMLEnd-to-end ML platform
Deployment
Self-hostable / OSS core
Haystack✓
ZenML✓
Managed cloud available
Haystack✓
ZenML✓
On-prem / VPC deployment
Haystack✓
ZenML✓
Observability
LLM tracing / observability
Haystack✓
ZenML✓
Evaluation (offline / LLM-judge / human)
Haystack✓
ZenML✓
Dev
Prompt management + versioning
Haystack✓
ZenML✓
Tracking
Experiment tracking / model registry
Haystack-
ZenML✓
Serving
Model serving / inference endpoint
Haystack✓
ZenML✓
Interop
OpenTelemetry / OpenLLMetry compatible
Haystack✓
ZenML✓
Framework-agnostic
Haystack✓
ZenML✓
Gateway
Multi-provider model support
Haystack✓
ZenML✓
Data
No-train-on-customer-data guarantee
HaystackUnknown
ZenML-

What each one is

The product in its own terms, so the numbers below have context.

Haystack

Leader

A Python-based orchestration framework for building production-ready AI applications with modular pipelines, agent workflows, and retrieval-augmented generation (RAG). Provides explicit control over retrieval, reasoning, memory, tools, and generation components, supporting everything from simple semantic search to complex multi-step agent systems.

Independently observed

ZenML

ZenML is a Python-based orchestration framework that manages machine learning pipelines and agents across any infrastructure, from local development to production Kubernetes clusters. It provides centralized artifact management, automated tracking and versioning, and enterprise-grade security compliance for reproducible AI systems.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Haystack

Leader
HybridFree tier

Free open-source core with paid enterprise support available

  • Open SourceFree
  • EnterpriseContact sales
as of verify ↗

ZenML

HybridFree tier

Free open-source version; managed Pro service available

  • CommunityFree
    • experiment tracking
    • pipeline orchestration
    • artifact storage
    • model versioning
  • ProManaged service pricing not specified
    • managed control plane
    • governance
    • SSO
    • SLA support
    • audit trails
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
Web
Haystack✓
ZenML✗
macOS
Haystack✗
ZenML✓
Windows
Haystack✗
ZenML✓
Linux
Haystack✗
ZenML✓
CLI
Haystack✓
ZenML✓
Deployment
Cloud / SaaS
Haystack✓
ZenML✓
Self-hosted
Haystack✓
ZenML✓
On-premise
Haystack✓
ZenML✗
Hybrid
Haystack✗
ZenML✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

In common (2)
  • OpenAI
  • Hugging Face

Haystack

Leader
28 total - 26 not shared
  • Anthropic
  • Mistral
  • Weaviate
  • Pinecone
  • Elasticsearch
  • AstraDB
  • Apify
  • ReadMe
  • Azure OpenAI
  • Datadog
  • OpenTelemetry
  • SerperDev
  • SearchApi
  • Cohere
  • AWS Bedrock
  • FAISS
  • AWS SageMaker
  • OpenSearch
  • Google Colab
  • MCP servers
  • Amazon Bedrock
  • Claude
  • Amazon S3
  • Meta
  • +2 more
Independently observed

ZenML

26 total - 24 not shared
  • Git
  • GitHub
  • GitLab
  • Kubernetes
  • Docker
  • Poetry
  • Slack
  • ClickUp
  • MLflow
  • Databricks
  • Trackio
  • LangGraph
  • PyTorch
  • scikit-learn
  • LlamaIndex
  • PyTorch Lightning
  • Axolotl
  • AzureML
  • AWS
  • Google Cloud
  • Azure
  • DigitalOcean
  • Kubeflow
  • MySQL
Independently observed
Still deciding?

Haystack or ZenML: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.