# LangChain vs Pydantic AI

**Leader by vioscaleAI score:** LangChain

| Attribute | LangChain | Pydantic AI |
|---|---|---|
| **vioscaleAI score** | 79 (69% (medium)) | 65.5 (62% (medium)) |
| activity.commits_last_30d | 100 | 100 |
| adoption.dependent_repos | 18,663 | 0 |
| adoption.github_stars | 147,461 | 20,608 |
| adoption.package_downloads_weekly | 3,725,877 | 3,171,945 |
| 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":"A comprehensive toolkit combining an open-source Python agent development framework with a managed observability platform designed specifically for AI applications, including monitoring, evaluation, and LLM gateway capabilities. It is indexed under MLOps & LLMOps Tools.","source":"https://pydantic.dev/articles/ai-observability-pricing-comparison","question":"What is Pydantic AI?","confidence":0.6},{"answer":"Pydantic AI 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 $2. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://pydantic.dev/articles/ai-observability-pricing-comparison","question":"Is Pydantic AI free to use?","confidence":0.6},{"answer":"Pydantic AI supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://pydantic.dev/articles/ai-observability-pricing-comparison","question":"What platforms does Pydantic AI support?","confidence":0.6},{"answer":"Yes. Pydantic AI can be deployed cloud / SaaS and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://pydantic.dev/articles/ai-observability-pricing-comparison","question":"Can Pydantic AI be self-hosted?","confidence":0.6},{"answer":"We have confirmed 10 integrations for Pydantic AI, including Pydantic AI, Pydantic Evals, OpenTelemetry, Model Context Protocol (MCP), Snowflake, FastAPI, OpenAI and LangChain, plus 2 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://pydantic.dev/articles/ai-observability-pricing-comparison","question":"What does Pydantic AI integrate with?","confidence":0.6},{"answer":"We have independently confirmed SOC 2, HIPAA and GDPR for Pydantic AI. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Pydantic AI not holding them. Always confirm compliance directly before you rely on it.","source":"https://pydantic.dev/security","question":"What security certifications does Pydantic AI have?","confidence":0.7},{"answer":"Yes. Pydantic AI 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/pydantic/pydantic-ai","question":"Is Pydantic AI 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. | An observability and development platform for production AI agent systems that combines tracing, evaluation, and inference gateway capabilities for building reliable LLM applications. |
| 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":"observability","evaluation":true,"soc2_type_ii":true,"managed_cloud":true,"model_serving":true,"pricing_model":"commercial_enterprise_platform","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,"experiment_tracking":true,"mit_or_apache_permissive_oss_license":true,"native_observability_and_trace_logging":true,"fault_tolerance_and_llm_retry_mechanisms":true,"tool_calling_and_function_schema_validation":true,"managed_cloud_runtime_infrastructure_offered":true,"synchronous_and_asynchronous_execution_modes":true,"streaming_output_and_intermediate_step_yielding":true,"dynamic_agent_generation_and_spawning_at_runtime":true}` |
| integrations.count | 1,000 | 7 |
| 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":"Pydantic AI"},{"name":"Pydantic Evals"},{"name":"OpenTelemetry"},{"name":"Model Context Protocol (MCP)"},{"name":"Snowflake"},{"name":"FastAPI"},{"name":"OpenAI"},{"name":"LangChain"},{"name":"HuggingFace"},{"name":"Prefect"}]` |
| language.primary | Python | Python |
| license.spdx | MIT | MIT |
| market.availability | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":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":"subscription","plans":[{"free":true,"name":"Personal","summary":"Free for up to 10M spans/month","features":["10M spans per month","Hard cap to prevent bill shock"],"minSeats":1,"commitment":"monthly","components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"For solo developers","contactSales":false,"includedLimits":{"spans":"10M/month"}},{"free":false,"name":"Team","summary":"$49/month + $2 per million spans","features":["Overage billing at flat rate","Seat limits apply"],"commitment":"monthly","components":[{"kind":"fixed","amount":49,"period":"month","currency":"USD"},{"per":{"qty":1,"unit":"million spans"},"kind":"metered","amount":2,"currency":"USD"}],"contactSales":false},{"free":false,"name":"Growth","summary":"$249/month + $2 per million spans, unlimited seats","features":["No seat limits","Overage billing at flat rate"],"commitment":"monthly","components":[{"kind":"fixed","amount":249,"period":"month","currency":"USD"},{"per":{"qty":1,"unit":"million spans"},"kind":"metered","amount":2,"currency":"USD"}],"contactSales":false}],"summary":"Free tier for 10M spans/month. Paid plans from $49/month with flat-rate overage pricing at $2 per million spans.","currency":"USD","freeTier":true,"sourceUrl":"https://pydantic.dev/articles/ai-observability-pricing-comparison","retrievedAt":"2026-09-13T19:28:55.779Z","startingPrice":{"amount":49,"period":"month","currency":"USD"},"billingPeriods":["month"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | freemium |
| pricing.price_level | mid | mid |
| pricing.starting_price | `{"amount":39,"currency":"USD"}` | `{"amount":49,"currency":"USD"}` |
| pricing.transparent | yes | yes |
| release.cadence_days | - | 1 |
| release.history | `[{"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"}]` | `[{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/clai2-bleeding","date":"2026-10-06T01:25:23Z","type":"prerelease","version":"clai2-bleeding"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.56.0","date":"2026-10-13T23:35:15Z","type":"stable","version":"v2.56.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.55.0","date":"2026-10-09T19:20:25Z","type":"stable","version":"v2.55.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.54.0","date":"2026-10-03T03:21:28Z","type":"stable","version":"v2.54.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.53.0","date":"2026-10-02T02:52:26Z","type":"stable","version":"v2.53.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.52.0","date":"2026-09-30T00:54:20Z","type":"stable","version":"v2.52.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.7","date":"2026-09-30T00:54:21Z","type":"stable","version":"v1.107.7"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.51.0","date":"2026-09-25T23:19:04Z","type":"stable","version":"v2.51.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.50.0","date":"2026-09-25T04:47:15Z","type":"stable","version":"v2.50.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.49.0","date":"2026-09-24T03:09:53Z","type":"stable","version":"v2.49.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.48.0","date":"2026-09-23T02:41:40Z","type":"stable","version":"v2.48.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.47.0","date":"2026-09-22T03:59:32Z","type":"stable","version":"v2.47.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.46.0","date":"2026-09-19T03:51:40Z","type":"stable","version":"v2.46.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.45.0","date":"2026-09-18T04:31:12Z","type":"stable","version":"v2.45.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.44.0","date":"2026-09-17T04:03:52Z","type":"stable","version":"v2.44.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v1.107.6","date":"2026-09-17T03:30:51Z","type":"stable","version":"v1.107.6"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.43.0","date":"2026-09-12T00:54:42Z","type":"stable","version":"v2.43.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.42.0","date":"2026-09-09T03:33:32Z","type":"stable","version":"v2.42.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.41.0","date":"2026-09-08T04:15:21Z","type":"stable","version":"v2.41.0"},{"url":"https://github.com/pydantic/pydantic-ai/releases/tag/v2.40.0","date":"2026-09-05T00:09:37Z","type":"stable","version":"v2.40.0"}]` |
| reliability.sla_pct | 99.5 | - |
| reliability.status_page | yes | - |
| security.certifications | - | `[{"name":"SOC 2 Type II","level":"Type II","status":"active"}]` |
| security.disclosure_policy | yes | yes |
| security.gdpr | yes | yes |
| security.hipaa | yes | yes |
| security.iso27001 | 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 | https://pydantic.dev/security |
| 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":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fpydantic%2Fpydantic-ai&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (MLOps & LLMOps Tools)

| Capability | LangChain | Pydantic AI |
|---|:--:|:--:|
| **Core** |  |  |
| Tool role | LLM observability / eval | 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 2026-10-16T20:02:01.364Z. "-" = undocumented, not absent.*