# Haystack vs ZenML

**Leader by vioscaleAI score:** Haystack

| Attribute | Haystack | ZenML |
|---|---|---|
| **vioscaleAI score** | 65.8 (68% (medium)) | 60.8 (52% (medium)) |
| activity.commits_last_30d | 100 | 41 |
| adoption.dependent_repos | 237 | 44 |
| adoption.github_stars | 26,738 | 5,615 |
| adoption.package_downloads_weekly | 121,930 | - |
| content.faq | `[{"answer":"A Python-based orchestration tool for creating and deploying intelligent applications powered by language models. Developers assemble reusable components (data retrieval, model integration, tool execution) into customizable workflows, from question-answering systems to multi-step autonomous agents, deployable on private infrastructure or in the cloud. It is indexed under MLOps & LLMOps Tools.","source":"https://haystack.deepset.ai","question":"What is Haystack?","confidence":0.6},{"answer":"Haystack is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Paid editions are also offered: Enterprise Starter and Enterprise Platform, priced on request. Pricing changes often, so verify at source before relying on it.","source":"https://haystack.deepset.ai","question":"Is Haystack free to use?","confidence":0.6},{"answer":"We have confirmed browser-based access to Haystack. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://haystack.deepset.ai","question":"What platforms does Haystack support?","confidence":0.6},{"answer":"Yes. Haystack can be deployed cloud / SaaS, hybrid, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://haystack.deepset.ai","question":"Can Haystack be self-hosted?","confidence":0.6},{"answer":"We have confirmed 21 integrations for Haystack, including OpenAI, Anthropic, Mistral, Hugging Face, Weaviate, Pinecone, Elasticsearch and AstraDB, plus 13 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://haystack.deepset.ai","question":"What does Haystack integrate with?","confidence":0.6},{"answer":"Yes. Haystack is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/deepset-ai/haystack","question":"Is Haystack open source?","confidence":0.95}]` | `[{"answer":"An MLOps framework that provides reproducible machine learning pipelines with automatic logging, versioning, and observability. Includes agent runtime capabilities (Kitaru) for building replayable agent workflows, deployable on your existing infrastructure without vendor lock-in. It is indexed under MLOps & LLMOps Tools.","source":"https://www.zenml.io/blog/crewai-pricing","question":"What is ZenML?","confidence":0.6},{"answer":"ZenML is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Paid editions are also offered: Pro, priced on request. Pricing changes often, so verify at source before relying on it.","source":"https://www.zenml.io/blog/crewai-pricing","question":"Is ZenML free to use?","confidence":0.6},{"answer":"ZenML supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://www.zenml.io/blog/crewai-pricing","question":"What platforms does ZenML support?","confidence":0.6},{"answer":"Yes. ZenML can be deployed cloud / SaaS, hybrid, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://www.zenml.io/blog/crewai-pricing","question":"Can ZenML be self-hosted?","confidence":0.6},{"answer":"We have confirmed 4 integrations for ZenML, including Git, Kubernetes, Docker and Poetry. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://www.zenml.io/blog/crewai-pricing","question":"What does ZenML integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2 and ISO 27001 for ZenML. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as ZenML not holding them. Always confirm compliance directly before you rely on it.","source":"https://www.zenml.io","question":"What security certifications does ZenML have?","confidence":0.48},{"answer":"Yes. ZenML is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/zenml-io/zenml","question":"Is ZenML open source?","confidence":0.95}]` |
| deployment.options | `{"cloud":true,"on_prem":true,"self_hosted":true}` | `{"cloud":true,"hybrid":true,"self_hosted":true}` |
| description.long | 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. | 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. |
| features.capabilities | `{"role":"platform","evaluation":true,"managed_cloud":true,"model_serving":true,"pricing_model":"free_open_source","self_hostable":true,"multi_provider":true,"vpc_deployment":true,"otel_compatible":true,"no_train_on_data":"unknown","llm_observability":true,"prompt_management":true,"framework_agnostic":true,"architecture_paradigm":"graph_based_cycles","mit_or_apache_permissive_oss_license":true,"native_observability_and_trace_logging":true,"native_memory_and_state_persistence_layer":true,"tool_calling_and_function_schema_validation":true,"managed_cloud_runtime_infrastructure_offered":true,"dynamic_agent_generation_and_spawning_at_runtime":true}` | `{"role":"platform","evaluation":true,"managed_cloud":true,"model_serving":true,"self_hostable":true,"multi_provider":true,"vpc_deployment":true,"otel_compatible":true,"llm_observability":true,"prompt_management":true,"framework_agnostic":true,"experiment_tracking":true}` |
| integrations.count | 9 | 60 |
| integrations.list | `[{"name":"OpenAI"},{"name":"Anthropic"},{"name":"Mistral"},{"name":"Hugging Face"},{"name":"Weaviate"},{"name":"Pinecone"},{"name":"Elasticsearch"},{"name":"AstraDB"},{"name":"Apify"},{"name":"ReadMe"},{"name":"Azure OpenAI"},{"name":"Datadog"},{"name":"OpenTelemetry"},{"name":"SerperDev"},{"name":"SearchApi"},{"name":"Cohere"},{"name":"AWS Bedrock"},{"name":"FAISS"},{"name":"AWS SageMaker"},{"name":"OpenSearch"},{"name":"Google Colab"},{"name":"MCP servers"},{"name":"Amazon Bedrock","native":true,"category":"llm","direction":"outbound"},{"name":"Claude","native":true,"category":"llm","direction":"outbound"},{"name":"Amazon S3","native":true,"category":"data","direction":"inbound"},{"name":"Meta","native":true,"category":"llm","direction":"outbound"},{"name":"Stability AI","native":true,"category":"llm","direction":"outbound"},{"name":"AI21 Labs","native":true,"category":"llm","direction":"outbound"}]` | `[{"name":"Git"},{"name":"GitHub"},{"name":"GitLab"},{"name":"Kubernetes"},{"name":"Docker"},{"name":"Poetry"},{"name":"Slack","native":true,"category":"chat","direction":"bidirectional"},{"name":"ClickUp","native":true,"category":"project management","direction":"bidirectional"},{"name":"MLflow","native":true,"category":"experiment tracking","direction":"outbound"},{"name":"Databricks","native":true,"category":"data platform","direction":"bidirectional"},{"name":"Trackio","native":true,"category":"experiment tracking","direction":"outbound"},{"name":"OpenAI","native":true,"category":"LLM provider","direction":"bidirectional"},{"name":"LangGraph","native":true,"category":"workflow framework","direction":"bidirectional"},{"name":"PyTorch","native":true,"category":"ML framework","direction":"bidirectional"},{"name":"scikit-learn","native":true,"category":"ML framework","direction":"bidirectional"},{"name":"Hugging Face","native":true,"category":"model hub","direction":"bidirectional"},{"name":"LlamaIndex","native":true,"category":"RAG framework","direction":"bidirectional"},{"name":"PyTorch Lightning","native":true,"category":"ML framework","direction":"bidirectional"},{"name":"Axolotl","native":true,"category":"ML framework","direction":"bidirectional"},{"name":"AzureML","native":true,"category":"ML service","direction":"bidirectional"},{"name":"AWS","native":true,"category":"cloud provider","direction":"bidirectional"},{"name":"Google Cloud","native":true,"category":"cloud provider","direction":"bidirectional"},{"name":"Azure","native":true,"category":"cloud provider","direction":"bidirectional"},{"name":"DigitalOcean","native":true,"category":"cloud provider","direction":"bidirectional"},{"name":"Kubeflow","native":true,"category":"ML orchestration","direction":"bidirectional"},{"name":"MySQL","native":true}]` |
| language.primary | Python | Python |
| license.spdx | Apache-2.0 | Apache-2.0 |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true,"mac":true,"linux":true,"windows":true}` |
| pricing | `{"type":"hybrid","plans":[{"free":true,"name":"Open Source","description":"Free, open-source AI framework with community support","contactSales":false},{"free":false,"name":"Enterprise","description":"Enterprise support with exclusive access to data workflows, testing tools, and scalable cloud or on-premise deployment","contactSales":true}],"summary":"Free open-source core with paid enterprise support available","freeTier":true,"sourceUrl":"https://haystack.deepset.ai","retrievedAt":"2026-10-13T22:38:13.832Z"}` | `{"type":"hybrid","plans":[{"free":true,"name":"Community","summary":"Free, self-hosted","features":["experiment tracking","pipeline orchestration","artifact storage","model versioning"],"description":"Open-source self-hosted version with no license cost","contactSales":false},{"free":false,"name":"Pro","summary":"Managed service pricing not specified","features":["managed control plane","governance","SSO","SLA support","audit trails"],"description":"Managed cloud service with governance and SSO features","contactSales":false}],"summary":"Free open-source version; managed Pro service available","currency":"USD","freeTier":true,"sourceUrl":"https://www.zenml.io/blog/clearml-pricing","retrievedAt":"2026-09-10T21:07:20.688Z","billingPeriods":["month"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | commercial |
| pricing.price_level | low | low |
| pricing.transparent | no | no |
| release.cadence_days | 2 | 15 |
| release.history | `[{"url":"https://github.com/deepset-ai/haystack/releases/tag/v3.3.0","date":"2026-10-01T10:39:53Z","type":"stable","version":"v3.3.0"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v3.3.0-rc1","date":"2026-09-30T13:33:59Z","type":"prerelease","version":"v3.3.0-rc1"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v3.2.0","date":"2026-09-24T10:49:36Z","type":"stable","version":"v3.2.0"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v3.2.0-rc1","date":"2026-09-23T12:24:18Z","type":"prerelease","version":"v3.2.0-rc1"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v3.1.1","date":"2026-09-03T09:27:52Z","type":"stable","version":"v3.1.1"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v3.1.1-rc1","date":"2026-09-03T07:27:21Z","type":"prerelease","version":"v3.1.1-rc1"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v3.1.0","date":"2026-08-24T15:19:09Z","type":"stable","version":"v3.1.0"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v3.1.0-rc3","date":"2026-08-21T15:31:26Z","type":"prerelease","version":"v3.1.0-rc3"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v3.1.0-rc2","date":"2026-08-21T14:30:15Z","type":"prerelease","version":"v3.1.0-rc2"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v3.1.0-rc1","date":"2026-08-18T09:09:17Z","type":"prerelease","version":"v3.1.0-rc1"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v3.0.0","date":"2026-07-20T12:07:08Z","type":"stable","version":"v3.0.0"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v3.0.0-rc1","date":"2026-07-20T09:04:49Z","type":"prerelease","version":"v3.0.0-rc1"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.31.0","date":"2026-07-08T11:34:43Z","type":"stable","version":"v2.31.0"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.31.0-rc2","date":"2026-07-07T08:18:58Z","type":"prerelease","version":"v2.31.0-rc2"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.31.0-rc1","date":"2026-07-07T06:24:07Z","type":"prerelease","version":"v2.31.0-rc1"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.30.2","date":"2026-06-18T08:36:45Z","type":"stable","version":"v2.30.2"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.30.2-rc1","date":"2026-06-17T14:32:06Z","type":"prerelease","version":"v2.30.2-rc1"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.30.1","date":"2026-06-09T13:26:29Z","type":"stable","version":"v2.30.1"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.30.1-rc1","date":"2026-06-09T12:45:47Z","type":"prerelease","version":"v2.30.1-rc1"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.30.0","date":"2026-06-03T10:21:07Z","type":"stable","version":"v2.30.0"}]` | `[{"url":"https://github.com/zenml-io/zenml/releases/tag/0.97.0","date":"2026-09-23T13:30:23Z","type":"stable","version":"0.97.0"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.96.4","date":"2026-09-04T13:32:22Z","type":"stable","version":"0.96.4"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.96.3","date":"2026-08-07T13:24:25Z","type":"stable","version":"0.96.3"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.96.2","date":"2026-07-17T11:21:15Z","type":"stable","version":"0.96.2"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.96.1","date":"2026-07-02T20:38:13Z","type":"stable","version":"0.96.1"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.96.0","date":"2026-07-02T12:52:05Z","type":"stable","version":"0.96.0"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.95.1","date":"2026-06-18T12:24:26Z","type":"stable","version":"0.95.1"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.95.0","date":"2026-06-17T15:08:22Z","type":"stable","version":"0.95.0"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.6","date":"2026-06-02T10:57:18Z","type":"stable","version":"0.94.6"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.5","date":"2026-05-29T10:10:53Z","type":"stable","version":"0.94.5"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.4","date":"2026-05-12T15:13:19Z","type":"stable","version":"0.94.4"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.3","date":"2026-04-24T13:55:54Z","type":"stable","version":"0.94.3"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.2","date":"2026-04-08T15:00:24Z","type":"stable","version":"0.94.2"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.1","date":"2026-03-19T17:11:55Z","type":"stable","version":"0.94.1"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.94.0","date":"2026-03-04T18:22:00Z","type":"stable","version":"0.94.0"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.93.3","date":"2026-02-19T09:59:12Z","type":"stable","version":"0.93.3"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.93.2","date":"2026-01-29T22:30:18Z","type":"stable","version":"0.93.2"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.93.1","date":"2026-01-14T09:20:00Z","type":"stable","version":"0.93.1"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.93.0","date":"2025-12-16T09:19:32Z","type":"stable","version":"0.93.0"},{"url":"https://github.com/zenml-io/zenml/releases/tag/0.92.0","date":"2025-12-02T06:42:19Z","type":"stable","version":"0.92.0"}]` |
| reliability.status_page | - | yes |
| security.certifications | - | `[{"name":"SOC 2 Type II","level":"Type II","status":"active"},{"name":"ISO 27001","status":"active"}]` |
| security.iso27001 | - | yes |
| security.scorecard | 9.4 | 6.8 |
| security.soc2 | - | yes |
| security.trust_center | - | https://www.zenml.io/blog/navigating-ofgem-compliance-for-ml-systems-in-energy-a-practical-guide |
| security.vulnerabilities | `{"count":1,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=farm-haystack&per_page=100","last_12m":0,"max_severity":"CRITICAL"}` | `{"count":14,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=zenml&per_page=100","last_12m":0,"max_severity":"CRITICAL"}` |

## Capabilities (MLOps & LLMOps Tools)

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

*Source: vioscaleAI. Generated 2026-10-16T17:44:40.216Z. "-" = undocumented, not absent.*