# LangChain vs Weights & Biases

**Leader by vioscaleAI score:** LangChain

| Attribute | LangChain | Weights & Biases |
|---|---|---|
| **vioscaleAI score** | 79 (69% (medium)) | 64.6 (44% (low)) |
| activity.commits_last_30d | 100 | 100 |
| adoption.dependent_repos | 18,663 | 9,299 |
| adoption.github_stars | 147,461 | 11,268 |
| adoption.package_downloads_weekly | 3,725,877 | - |
| content.faq | `[{"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}]` | `[{"answer":"Weights & Biases provides an AI development platform for building and managing machine learning models with integrated experiment tracking, dataset and model management, prompt versioning, and collaborative code features. It supports multiple deployment options including cloud-hosted SaaS, dedicated instances, and self-managed deployments. It is indexed under MLOps & LLMOps Tools.","source":"https://wandb.ai","question":"What is Weights & Biases?","confidence":0.6},{"answer":"Weights & Biases supports the web and iOS. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://wandb.ai","question":"What platforms does Weights & Biases support?","confidence":0.6},{"answer":"Yes. Weights & Biases can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://wandb.ai","question":"Can Weights & Biases be self-hosted?","confidence":0.6},{"answer":"We have confirmed 10 integrations for Weights & Biases, including OpenAI, Alibaba Qwen, Meta Llama, Microsoft Phi, Hangzhou DeepSeek, Z.ai GLM, MoonshotAI Kimi and CoreWeave, plus 2 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://wandb.ai","question":"What does Weights & Biases integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, ISO 27001, HIPAA and GDPR for Weights & Biases. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Weights & Biases not holding them. Always confirm compliance directly before you rely on it.","source":"https://wandb.ai","question":"What security certifications does Weights & Biases have?","confidence":0.6},{"answer":"Yes. Weights & Biases 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/wandb/wandb","question":"Is Weights & Biases open source?","confidence":0.95}]` |
| deployment.options | `{"cloud":true,"hybrid":true,"self_hosted":true}` | `{"cloud":true,"on_prem":true,"self_hosted":true}` |
| description.long | A unified developer platform consisting of open-source frameworks and commercial tools for building, testing, monitoring, and deploying AI agents and LLM-powered applications. | A collaborative development platform that enables tracking of ML experiments, versioning of models, evaluation of AI systems, and deployment to production. It provides specialized observability and tracing capabilities for LLM applications, with support for both managed cloud and self-hosted infrastructure. |
| features.capabilities | `{"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}` | `{"role":"platform","evaluation":true,"managed_cloud":true,"model_serving":true,"self_hostable":true,"multi_provider":true,"vpc_deployment":true,"llm_observability":true,"prompt_management":true,"framework_agnostic":true,"experiment_tracking":true}` |
| integrations.count | 1,000 | 9 |
| integrations.list | `[{"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"}]` | `[{"name":"OpenAI"},{"name":"Alibaba Qwen"},{"name":"Meta Llama"},{"name":"Microsoft Phi"},{"name":"Hangzhou DeepSeek"},{"name":"Z.ai GLM"},{"name":"MoonshotAI Kimi"},{"name":"CoreWeave"},{"name":"LangChain","native":false},{"name":"TensorBoard","native":true},{"name":"AWS Bedrock","category":"cloud"},{"name":"Claude Code","category":"ide"},{"name":"Google Agent Development Kit"},{"name":"SambaNova Cloud","category":"cloud"},{"name":"Friendli","category":"deployment"},{"name":"deepset"}]` |
| language.primary | Python | Python |
| license.spdx | MIT | MIT |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"web":true}` | `{"cli":true,"ios":true,"web":true}` |
| pricing | `{"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"]}` | `{"type":"free","freeTier":true,"sourceUrl":"https://wandb.ai","retrievedAt":"2026-10-05T10:12:41.326Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | free |
| pricing.price_level | mid | free |
| pricing.starting_price | `{"amount":39,"currency":"USD"}` | - |
| pricing.transparent | yes | no |
| release.cadence_days | - | 16 |
| release.history | 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| 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|
| reliability.sla_pct | 99.5 | - |
| reliability.status_page | yes | yes |
| security.certifications | - | `[{"name":"ISO/IEC 27001:2022","status":"active"},{"name":"ISO/IEC 27017:2015","status":"active"},{"name":"ISO/IEC 27018:2019","status":"active"},{"name":"SOC 2","status":"active"},{"name":"HIPAA","status":"active"},{"name":"NIST 800-53","status":"active"}]` |
| security.disclosure_policy | yes | yes |
| security.gdpr | yes | yes |
| security.hipaa | yes | yes |
| security.iso27001 | yes | yes |
| security.scorecard | 5.8 | - |
| security.soc2 | yes | yes |
| security.trust_center | https://www.langchain.com/blog/building-governed-agents-a-framework-for-cost-control-and-compliance | - |
| security.vulnerabilities | `{"count":21,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=langchain&per_page=100","last_12m":2,"max_severity":"CRITICAL"}` | `{"count":1,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=wandb&per_page=100","last_12m":0,"max_severity":"HIGH"}` |

## Capabilities (MLOps & LLMOps Tools)

| Capability | LangChain | Weights & Biases |
|---|:--:|:--:|
| **Core** |  |  |
| Tool role | LLM observability / eval | 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 2026-10-21T12:19:48.641Z. "-" = undocumented, not absent.*