# Arize AI vs Haystack

| Attribute | Arize AI | Haystack |
|---|---|---|
| **Vioscale score** | 70.5 (32% (low)) | 64.9 (62% (medium)) |
| activity.commits_last_30d | - | 100 |
| adoption.dependent_repos | - | 237 |
| adoption.github_stars | - | 26,323 |
| adoption.package_downloads_weekly | - | 199,336 |
| deployment.options | `{"cloud":true,"on_prem":true,"self_hosted":true}` | `{"cloud":true,"hybrid":true,"on_prem":true,"self_hosted":true}` |
| description.long | An AI engineering platform that enables teams to observe agent behavior end-to-end, run evaluations at scale, and systematically improve agents through testing and experimentation, available as both a managed cloud service and self-hosted deployment. | 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. |
| features.capabilities | `{"role":"platform","evaluation":true,"managed_cloud":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}` | `{"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","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}` |
| integrations.count | 25 | 14 |
| integrations.list | `[{"name":"OpenAI"},{"name":"Anthropic"},{"name":"Azure OpenAI"},{"name":"AWS Bedrock"},{"name":"Vertex AI"},{"name":"Google GenAI"},{"name":"NVIDIA NIM"},{"name":"Gemini"},{"name":"OpenRouter"},{"name":"LiteLLM"},{"name":"Claude Code"},{"name":"Cursor"},{"name":"OpenCode"},{"name":"LangGraph"},{"name":"Vercel AI SDK"},{"name":"Mastra"},{"name":"CrewAI"},{"name":"LlamaIndex"},{"name":"DSPy"},{"name":"OpenAI Agents SDK"},{"name":"Claude Agent SDK"},{"name":"BigQuery"},{"name":"Databricks"},{"name":"Snowflake"},{"name":"OpenTelemetry"}]` | `[{"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"}]` |
| language.primary | - | Python |
| license.spdx | - | Apache-2.0 |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"web":true}` | `{"web":true}` |
| pricing | - | `{"type":"hybrid","plans":[{"free":true,"name":"Open Source","description":"Free open-source framework with community support","contactSales":false},{"free":false,"name":"Enterprise Starter","description":"Consulting, secure design guidance, and deployment blueprints for production use","contactSales":true},{"free":false,"name":"Enterprise Platform","description":"Managed cloud or self-hosted deployment with observability, governance, and team collaboration features","contactSales":true}],"summary":"Free open-source core with commercial enterprise options","freeTier":true,"sourceUrl":"https://haystack.deepset.ai","retrievedAt":"2026-08-21T12:45:10.798Z"}` |
| pricing.free_tier | - | yes |
| pricing.model | commercial | commercial |
| pricing.price_level | - | low |
| pricing.transparent | - | no |
| release.cadence_days | - | 1 |
| release.history | - | `[{"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/deepset-ai/haystack/releases/tag/v2.30.0-rc1","date":"2026-06-02T12:23:29Z","type":"prerelease","version":"v2.30.0-rc1"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.29.0","date":"2026-05-12T14:25:16Z","type":"stable","version":"v2.29.0"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.29.0-rc2","date":"2026-05-12T13:08:33Z","type":"prerelease","version":"v2.29.0-rc2"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.29.0-rc1","date":"2026-05-11T14:37:25Z","type":"prerelease","version":"v2.29.0-rc1"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.28.0","date":"2026-04-20T15:02:05Z","type":"stable","version":"v2.28.0"},{"url":"https://github.com/deepset-ai/haystack/releases/tag/v2.28.0-rc2","date":"2026-04-20T13:11:05Z","type":"prerelease","version":"v2.28.0-rc2"}]` |
| reliability.status_page | yes | - |
| security.gdpr | yes | - |
| security.hipaa | yes | - |
| security.iso27001 | yes | - |
| security.pci | yes | - |
| security.scorecard | - | 9.4 |
| security.soc2 | yes | - |
| 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"}` |

## Capabilities (MLOps & LLMOps Tools)

| Capability | Arize AI | Haystack |
|---|:--:|:--:|
| **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: Vioscale. Generated 2026-09-01T16:31:38.387Z. "-" = undocumented, not absent.*