# LangChain vs LlamaIndex

**Leader by Vioscale score:** LangChain

| Attribute | LangChain | LlamaIndex |
|---|---|---|
| **Vioscale score** | 80.7 (70% (medium)) | 66.3 (75% (high)) |
| activity.commits_last_30d | 100 | 32 |
| adoption.dependent_repos | 18,663 | 0 |
| adoption.github_stars | 145,063 | 51,883 |
| adoption.package_downloads_weekly | 2,967,570 | 1,685,400 |
| deployment.options | `{"cloud":true,"hybrid":true,"self_hosted":true}` | `{"cloud":true,"hybrid":true}` |
| description.long | LangSmith provides observability through tracing to debug agent behavior, evaluation capabilities to test and score agents with human review and automated assessments, and deployment services to run agents at scale. | LlamaParse is a cloud-based document parsing platform that uses vision language models and intelligent agents to automatically process complex documents—including PDFs, images, and office files—with support for layout detection, multi-modal content, and 80+ languages. It transforms document ingestion workflows with agentic extraction and indexing capabilities. |
| 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,"memory_architecture":"persistent","orchestration_model":"multi-agent-sequential","tool_function_calling":true,"code_execution_sandbox":true,"model_provider_agnostic":true}` | `{"role":"framework","evaluation":false,"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":false,"prompt_management":false,"framework_agnostic":true,"experiment_tracking":false,"mit_or_apache_permissive_oss_license":false,"native_observability_and_trace_logging":true,"fault_tolerance_and_llm_retry_mechanisms":true,"native_memory_and_state_persistence_layer":false,"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 | 3 |
| 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"},{"name":"Microsoft Azure"},{"name":"GitHub"}]` |
| language.primary | Python | Python |
| license.spdx | MIT | MIT |
| market.availability | `{"hqCountry":"US","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"hqCountry":"US","primaryMarkets":["US","EU"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"web":true}` |
| pricing | `{"type":"subscription","plans":[{"free":true,"name":"Developer","summary":"Free tier: 1 seat, 5k traces/month","features":["1 free seat","5k base traces/month","Tracing and analytics","Access to LangSmith platform"],"minSeats":1,"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Personal projects and single-seat usage","contactSales":false,"includedLimits":{"traces":"5k/month"}},{"free":false,"name":"Plus","summary":"$39/seat/month + usage (LCU/LSU), 10k traces included, 1 free small deployment","features":["Unlimited seats","10k base traces/month","1 free small serverless deployment","Full tracing and analytics","Evaluation tools"],"commitment":"monthly","components":[{"kind":"per_unit","unit":"seat","amount":39,"period":"month","currency":"USD"},{"per":{"qty":1,"unit":"LCU"},"kind":"metered","amount":1.5,"currency":"USD"},{"per":{"qty":1,"unit":"LSU"},"kind":"metered","amount":1,"currency":"USD"}],"description":"Teams with moderate usage and collaboration requirements","contactSales":false,"includedLimits":{"traces":"10k/month","serverless_deployments":"1 small free"}},{"free":false,"name":"Enterprise","summary":"Custom pricing, annual billing, includes premium support and white-glove onboarding","features":["Advanced administration","Dedicated support","Custom deployments","White-glove onboarding","Proactive monitoring","Premium SLA"],"commitment":"annual","description":"Advanced security, support, and custom deployment options","contactSales":true}],"addOns":[{"name":"Additional Serverless/Dedicated Deployments"}],"summary":"Free Developer plan (5k traces). Plus plan $39/seat/month. Enterprise custom. Usage-based pricing for compute (LCU=$1.50) and storage (LSU=$1.00).","currency":"USD","freeTier":true,"sourceUrl":"https://www.langchain.com/pricing","retrievedAt":"2026-08-21T12:42:05.738Z","startingPrice":{"unit":"seat","amount":39,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` | `{"type":"hybrid","plans":[{"free":true,"name":"Free","summary":"$0/month, 10K credits included","features":["Basic parsing","Up to 130+ file formats","File upload only","Community support"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"contactSales":false,"includedLimits":{"credits":"10,000/month","concurrent_parse_jobs":"20","concurrent_sheets_jobs":"1","concurrent_extract_jobs":"5"}},{"free":false,"name":"Starter","summary":"$50/month up to 400K credits","features":["Multiple parse tiers (Cost Effective, Agentic, Agentic Plus)","Auto Mode smart tier routing","Advanced table and chart extraction","Structured JSON output","Extraction agents","Saved parse configs & model versioning","99.9% uptime","Basic email support"],"components":[{"kind":"fixed","amount":50,"period":"month","currency":"USD"}],"contactSales":false,"includedLimits":{"credits":"400,000/month","concurrent_parse_jobs":"100"}},{"free":false,"name":"Pro","summary":"$500/month up to 4M credits","features":["All Starter features","Classification & splitting","Sheets (spreadsheet data extraction)","Agents Builder","External data sources","Webhooks & API callbacks","Smart result caching","Slack support"],"components":[{"kind":"fixed","amount":500,"period":"month","currency":"USD"}],"contactSales":false,"includedLimits":{"credits":"4,000,000/month"}},{"free":false,"name":"Enterprise","summary":"Custom pricing with volume discounts","features":["Volume discount on credits","5x higher rate limits","Enterprise SSO","SaaS or Hybrid cloud deployment","Dedicated account manager","Priority Slack support with SLAs"],"contactSales":true}],"summary":"Free tier with 10K monthly credits; pay-as-you-go starting at $50/month. Credit pricing: 1,000 credits = $1.25.","currency":"USD","freeTier":true,"sourceUrl":"https://www.llamaindex.ai/pricing","retrievedAt":"2026-08-21T12:45:05.106Z","startingPrice":{"amount":50,"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":50,"currency":"USD"}` |
| pricing.transparent | yes | yes |
| release.cadence_days | - | 12 |
| release.history | `[{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain%3D%3D1.3.17","date":"2026-08-25T02:40:53Z","type":"stable","version":"langchain==1.3.17"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-perplexity%3D%3D1.4.1","date":"2026-08-21T14:08:45Z","type":"stable","version":"langchain-perplexity==1.4.1"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain%3D%3D1.3.16","date":"2026-08-20T14:35:30Z","type":"stable","version":"langchain==1.3.16"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-fireworks%3D%3D1.6.0","date":"2026-08-20T17:47:18Z","type":"stable","version":"langchain-fireworks==1.6.0"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-anthropic%3D%3D1.6.1","date":"2026-08-20T14:06:49Z","type":"stable","version":"langchain-anthropic==1.6.1"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openai%3D%3D1.6.0","date":"2026-08-19T21:45:02Z","type":"stable","version":"langchain-openai==1.6.0"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.6.0","date":"2026-08-19T15:55:57Z","type":"stable","version":"langchain-core==1.6.0"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-anthropic%3D%3D1.6.0","date":"2026-08-19T21:39:54Z","type":"stable","version":"langchain-anthropic==1.6.0"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openai%3D%3D1.5.2a1","date":"2026-08-18T01:51:38Z","type":"stable","version":"langchain-openai==1.5.2a1"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openai%3D%3D1.5.2","date":"2026-08-18T17:38:11Z","type":"stable","version":"langchain-openai==1.5.2"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.5.6","date":"2026-08-17T21:26:47Z","type":"stable","version":"langchain-core==1.5.6"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openrouter%3D%3D0.2.8","date":"2026-08-14T19:03:45Z","type":"stable","version":"langchain-openrouter==0.2.8"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openai%3D%3D1.5.1","date":"2026-08-14T15:47:44Z","type":"stable","version":"langchain-openai==1.5.1"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.5.5","date":"2026-08-14T18:56:41Z","type":"stable","version":"langchain-core==1.5.5"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openai%3D%3D1.5.0","date":"2026-08-13T13:15:00Z","type":"stable","version":"langchain-openai==1.5.0"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-anthropic%3D%3D1.5.6","date":"2026-08-13T02:31:03Z","type":"stable","version":"langchain-anthropic==1.5.6"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain%3D%3D1.3.15","date":"2026-08-11T19:11:09Z","type":"stable","version":"langchain==1.3.15"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.5.4","date":"2026-08-11T18:03:10Z","type":"stable","version":"langchain-core==1.5.4"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-anthropic%3D%3D1.5.5","date":"2026-08-11T19:16:55Z","type":"stable","version":"langchain-anthropic==1.5.5"},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-openai%3D%3D1.4.3","date":"2026-08-10T13:23:34Z","type":"stable","version":"langchain-openai==1.4.3"}]` | `[{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.24","date":"2026-08-19T18:48:01Z","type":"stable","version":"v0.14.24"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.23","date":"2026-06-24T19:36:43Z","type":"stable","version":"v0.14.23"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.22","date":"2026-05-14T20:22:24Z","type":"stable","version":"v0.14.22"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.21","date":"2026-04-21T00:18:51Z","type":"stable","version":"v0.14.21"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.20","date":"2026-04-03T19:55:51Z","type":"stable","version":"v0.14.20"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.19","date":"2026-03-25T20:59:15Z","type":"stable","version":"v0.14.19"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.18","date":"2026-03-16T19:42:07Z","type":"stable","version":"v0.14.18"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.16","date":"2026-03-10T19:20:35Z","type":"stable","version":"v0.14.16"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.15","date":"2026-02-18T19:06:42Z","type":"stable","version":"v0.14.15"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.14","date":"2026-02-10T23:08:46Z","type":"stable","version":"v0.14.14"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.13","date":"2026-01-21T20:44:52Z","type":"stable","version":"v0.14.13"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.12","date":"2025-12-30T01:07:03Z","type":"stable","version":"v0.14.12"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.10","date":"2025-12-04T19:46:03Z","type":"stable","version":"v0.14.10"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.9","date":"2025-12-02T21:31:18Z","type":"stable","version":"v0.14.9"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.8","date":"2025-11-10T22:18:42Z","type":"stable","version":"v0.14.8"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.7","date":"2025-10-30T23:58:43Z","type":"stable","version":"v0.14.7"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.6","date":"2025-10-26T03:01:31Z","type":"stable","version":"v0.14.6"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.5","date":"2025-10-15T19:10:56Z","type":"stable","version":"v0.14.5"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.4","date":"2025-10-03T17:52:07Z","type":"stable","version":"v0.14.4"},{"url":"https://github.com/run-llama/llama_index/releases/tag/v0.14.3","date":"2025-09-24T21:02:46Z","type":"stable","version":"v0.14.3"}]` |
| reliability.sla_pct | 99.5 | 99.9 |
| reliability.status_page | yes | yes |
| security.disclosure_policy | yes | yes |
| security.gdpr | yes | yes |
| security.hipaa | yes | yes |
| security.iso27001 | yes | - |
| security.scorecard | 5.9 | - |
| security.soc2 | yes | yes |
| 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=nixpkgs&package_name=python312Packages.llama-index-llms-openai&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (MLOps & LLMOps Tools)

| Capability | LangChain | LlamaIndex |
|---|:--:|:--:|
| **Core** |  |  |
| Tool role | LLM observability / eval | Agent / RAG framework |
| **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: Vioscale. Generated 2026-09-01T15:16:34.009Z. "-" = undocumented, not absent.*