# Haystack vs LangChain

**Leader by vioscaleAI score:** LangChain

| Attribute | Haystack | LangChain |
|---|---|---|
| **vioscaleAI score** | 65.8 (68% (medium)) | 79 (69% (medium)) |
| activity.commits_last_30d | 100 | 100 |
| adoption.dependent_repos | 237 | 18,663 |
| adoption.github_stars | 26,738 | 147,461 |
| adoption.package_downloads_weekly | 121,930 | 3,725,877 |
| 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 agent engineering platform providing end-to-end observability, evaluation, and deployment capabilities for production AI agents with support for multiple frameworks and deployment modes. It is indexed under MLOps & LLMOps Tools.","source":"https://www.langchain.com/pricing","question":"What is LangChain?","confidence":0.6},{"answer":"LangChain is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. A commercial or hosted edition starts at $1. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://www.langchain.com/pricing","question":"Is LangChain free to use?","confidence":0.6},{"answer":"We have confirmed browser-based access to LangChain. 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://www.langchain.com/pricing","question":"What platforms does LangChain support?","confidence":0.6},{"answer":"Yes. LangChain can be deployed cloud / SaaS, hybrid and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://www.langchain.com/pricing","question":"Can LangChain be self-hosted?","confidence":0.6},{"answer":"We have confirmed 8 integrations for LangChain, including OpenAI, Anthropic, Cohere, Google, Azure AI Search, Microsoft Fabric, Azure Kubernetes Service and OpaquePrompts. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://www.langchain.com/pricing","question":"What does LangChain integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for LangChain. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as LangChain not holding them. Always confirm compliance directly before you rely on it.","source":"https://trust.langchain.com","question":"What security certifications does LangChain have?","confidence":0.7},{"answer":"Yes. LangChain is published under the MIT 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/langchain-ai/langchain","question":"Is LangChain open source?","confidence":0.99},{"answer":"LangChain is available worldwide. The vendor is headquartered in the United States.","source":"https://www.langchain.com/pricing","question":"Where is LangChain available?","confidence":0.75}]` |
| 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. | A unified developer platform consisting of open-source frameworks and commercial tools for building, testing, monitoring, and deploying AI agents and LLM-powered applications. |
| 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":"observability","evaluation":true,"a2a_support":true,"mcp_support":true,"open_source":true,"managed_cloud":true,"model_serving":true,"pricing_model":"usage-based-saas","self_hostable":true,"multi_provider":true,"vpc_deployment":true,"otel_compatible":true,"deployment_model":"managed-platform","no_train_on_data":"unknown","streaming_output":true,"human_in_the_loop":true,"llm_observability":true,"prompt_management":true,"framework_agnostic":true,"multi_language_sdk":true,"experiment_tracking":true,"memory_architecture":"persistent","orchestration_model":"multi-agent-sequential","tool_function_calling":true,"code_execution_sandbox":true,"model_provider_agnostic":true}` |
| integrations.count | 9 | 1,000 |
| 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":"OpenAI"},{"name":"Anthropic"},{"name":"Cohere"},{"name":"Google"},{"name":"Azure OpenAI"},{"name":"Azure AI Search"},{"name":"Microsoft Fabric"},{"name":"Azure Kubernetes Service"},{"name":"OpaquePrompts"},{"name":"AWS","native":true,"category":"cloud_platform","direction":"bidirectional"},{"name":"MCP (Model Context Protocol)","native":true,"category":"tool_framework","direction":"bidirectional"}]` |
| language.primary | Python | Python |
| license.spdx | Apache-2.0 | MIT |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"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 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":"Developer","summary":"Free, 1 seat, 5k traces/month","features":["1 free seat","5000 base traces per month","Full LangSmith access"],"minSeats":1,"commitment":"monthly","components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Personal projects with full LangSmith access and limited monthly trace allowance","contactSales":false,"includedLimits":{"traces":"5000/month"}},{"free":false,"name":"Plus","summary":"$39/seat/month, unlimited seats, 10k traces/month included","features":["Unlimited seats","10000 base traces per month","1 free small serverless deployment","Team collaboration","LangSmith Deployment service access"],"commitment":"monthly","components":[{"kind":"per_unit","unit":"seat","amount":39,"period":"month","currency":"USD"}],"description":"Teams with moderate usage, collaboration needs, and one free small serverless deployment","contactSales":false,"includedLimits":{"traces":"10000/month","serverless_deployments":"1 small"}},{"free":false,"name":"Enterprise","summary":"Custom pricing, annual billing","features":["Advanced administration options","Enhanced security controls","Priority support","Custom deployment options"],"commitment":"annual","description":"Advanced administration, enhanced security, and custom deployment options","contactSales":true}],"addOns":[{"name":"Serverless Deployments"},{"name":"Dedicated Deployments"}],"summary":"Free Developer plan. Plus plan from $39/user/mo with unlimited seats. Enterprise custom pricing billed annually.","currency":"USD","freeTier":true,"sourceUrl":"https://www.langchain.com/pricing","retrievedAt":"2026-10-05T11:09:38.893Z","startingPrice":{"unit":"seat","amount":39,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | freemium |
| pricing.price_level | low | mid |
| pricing.starting_price | - | `{"amount":39,"currency":"USD"}` |
| pricing.transparent | no | yes |
| release.cadence_days | 2 | - |
| 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/langchain-ai/langchain/releases/tag/langchain-text-splitters%3D%3D1.1.3","date":"2026-10-02T15:46:49Z","type":"stable","version":"langchain-text-splitters==1.1.3"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openai%3D%3D1.6.7","date":"2026-09-30T15:12:17Z","type":"stable","version":"langchain-openai==1.6.7"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.6.6","date":"2026-09-29T14:53:11Z","type":"stable","version":"langchain-core==1.6.6"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-anthropic%3D%3D1.7.5","date":"2026-09-29T15:22:20Z","type":"stable","version":"langchain-anthropic==1.7.5"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain%3D%3D1.4.3","date":"2026-09-28T20:17:43Z","type":"stable","version":"langchain==1.4.3"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-fireworks%3D%3D1.7.0","date":"2026-09-28T20:46:50Z","type":"stable","version":"langchain-fireworks==1.7.0"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-fireworks%3D%3D1.6.3","date":"2026-09-25T12:57:38Z","type":"stable","version":"langchain-fireworks==1.6.3"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.6.5","date":"2026-09-24T18:11:22Z","type":"stable","version":"langchain-core==1.6.5"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openai%3D%3D1.6.6","date":"2026-09-24T11:31:31Z","type":"stable","version":"langchain-openai==1.6.6"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openai%3D%3D1.6.5","date":"2026-09-23T15:31:52Z","type":"stable","version":"langchain-openai==1.6.5"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-anthropic%3D%3D1.7.4","date":"2026-09-23T17:56:03Z","type":"stable","version":"langchain-anthropic==1.7.4"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openrouter%3D%3D0.2.9","date":"2026-09-22T04:16:11Z","type":"stable","version":"langchain-openrouter==0.2.9"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openai%3D%3D1.6.4","date":"2026-09-22T22:37:09Z","type":"stable","version":"langchain-openai==1.6.4"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-fireworks%3D%3D1.6.2","date":"2026-09-22T04:44:04Z","type":"stable","version":"langchain-fireworks==1.6.2"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-deepseek%3D%3D1.1.1","date":"2026-09-22T04:30:11Z","type":"stable","version":"langchain-deepseek==1.1.1"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-anthropic%3D%3D1.7.3","date":"2026-09-22T22:08:13Z","type":"stable","version":"langchain-anthropic==1.7.3"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openai%3D%3D1.6.3","date":"2026-09-21T18:32:44Z","type":"stable","version":"langchain-openai==1.6.3"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.6.4","date":"2026-09-21T15:51:23Z","type":"stable","version":"langchain-core==1.6.4"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-typesafe%3D%3D0.0.1a3","date":"2026-09-20T18:54:54Z","type":"stable","version":"langchain-typesafe==0.0.1a3"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain%3D%3D1.4.2","date":"2026-09-18T17:31:25Z","type":"stable","version":"langchain==1.4.2"}]` |
| reliability.sla_pct | - | 99.5 |
| reliability.status_page | - | yes |
| security.disclosure_policy | - | yes |
| security.gdpr | - | yes |
| security.hipaa | - | yes |
| security.iso27001 | - | yes |
| security.scorecard | 9.4 | 5.8 |
| security.soc2 | - | yes |
| security.trust_center | - | https://www.langchain.com/blog/building-governed-agents-a-framework-for-cost-control-and-compliance |
| 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":21,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=langchain&per_page=100","last_12m":2,"max_severity":"CRITICAL"}` |

## Capabilities (MLOps & LLMOps Tools)

| Capability | Haystack | LangChain |
|---|:--:|:--:|
| **Core** |  |  |
| Tool role | End-to-end ML platform | LLM observability / eval |
| **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 | Unknown |

*Source: vioscaleAI. Generated 2026-10-16T20:12:33.803Z. "-" = undocumented, not absent.*