Comparison

LangChain vs LlamaIndex

On the evidence we track, LangChain leads this comparison with a composite score of 81/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

LangChain full profile →LlamaIndex full profile →

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★LangChain81

LlamaIndex66

Attribute comparison across 2 tools
Attribute	LangChainLeader	LlamaIndex
Vioscale score	81 / 100medium · 70%updating	66 / 100high · 75%updating
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	freemium	freemium
Price levelpricing.price_level	mid	mid
Starting pricepricing.starting_price	$39	$50
Transparentpricing.transparent	✓	✓
Integrations
Countintegrations.count	1,000	3
Security
Disclosure policysecurity.disclosure_policy	✓	✓
Gdprsecurity.gdpr	✓	✓
Hipaasecurity.hipaa	✓	✓
Iso27001security.iso27001	✓	-
Scorecardsecurity.scorecard	5.9	-
Soc2security.soc2	✓	✓
Vulnerabilitiessecurity.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
Reliability
Sla pctreliability.sla_pct	99.5	99.9
Status pagereliability.status_page	✓	✓
Adoption
Dependent reposadoption.dependent_repos	18,663	0
Github starsadoption.github_stars	145,063	51,883
Package downloads weeklyadoption.package_downloads_weekly	2,967,570	1,685,400
Activity
Commits last 30dactivity.commits_last_30d	100	32
Release
Cadence daysrelease.cadence_days	-	12
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	MIT	MIT
Language
Primarylanguage.primary	Python	Python
Market
Availabilitymarket.availability	Available worldwide · HQ US	Available worldwide · Popular in US, EU · HQ US

Score

Vioscale score

LangChain81 / 100medium · 70%updating

LlamaIndex66 / 100high · 75%updating

Pricing

Free tier

LangChain✓

LlamaIndex✓

Model

LangChainfreemium

LlamaIndexfreemium

Price level

LangChainmid

LlamaIndexmid

Starting price

LangChain$39

LlamaIndex$50

Transparent

LangChain✓

LlamaIndex✓

Integrations

Count

LangChain1,000

LlamaIndex3

Security

Disclosure policy

LangChain✓

LlamaIndex✓

Gdpr

LangChain✓

LlamaIndex✓

Hipaa

LangChain✓

LlamaIndex✓

Iso27001

LangChain✓

LlamaIndex–

Scorecard

LangChain5.9

LlamaIndex–

Soc2

LangChain✓

LlamaIndex✓

Vulnerabilities

LangChainCount: 21 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=langchain&per_page=100 · Last 12m: 2 · Max severity: CRITICAL

LlamaIndexCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=nixpkgs&package_name=python312Packages.llama-index-llms-openai&per_page=100 · Last 12m: 0

Reliability

Sla pct

LangChain99.5

LlamaIndex99.9

Status page

LangChain✓

LlamaIndex✓

Adoption

Dependent repos

LangChain18,663

LlamaIndex0

Github stars

LangChain145,063

LlamaIndex51,883

Package downloads weekly

LangChain2,967,570

LlamaIndex1,685,400

Activity

Commits last 30d

LangChain100

LlamaIndex32

Release

Cadence days

LangChain–

LlamaIndex12

History

LangChain20 items

LlamaIndex20 items

License

Spdx

LangChainMIT

LlamaIndexMIT

Language

Primary

LangChainPython

LlamaIndexPython

Market

Availability

LangChainAvailable worldwide · HQ US

LlamaIndexAvailable worldwide · Popular in US, EU · HQ US

Capabilities

Feature-by-feature on the axes that matter for mlops & llmops tools. “-” means undocumented, not absent.

Capability comparison for 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

Core

Tool role

LangChainLLM observability / eval

LlamaIndexAgent / RAG framework

Deployment

Self-hostable / OSS core

LangChain✓

LlamaIndex✓

Managed cloud available

LangChain✓

LlamaIndex✓

On-prem / VPC deployment

LangChain✓

LlamaIndex✓

Observability

LLM tracing / observability

LangChain✓

LlamaIndex✗

Evaluation (offline / LLM-judge / human)

LangChain✓

LlamaIndex✗

Dev

Prompt management + versioning

LangChain✓

LlamaIndex✗

Tracking

Experiment tracking / model registry

LangChain-

LlamaIndex✗

Serving

Model serving / inference endpoint

LangChain✓

LlamaIndex✓

Interop

OpenTelemetry / OpenLLMetry compatible

LangChain✓

LlamaIndex✓

Framework-agnostic

LangChain✓

LlamaIndex✓

Gateway

Multi-provider model support

LangChain✓

LlamaIndex✓

Data

No-train-on-customer-data guarantee

LangChainUnknown

LlamaIndexUnknown

What each one is

The product in its own terms, so the numbers below have context.

LangChain

Leader

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.

Independently observed

LlamaIndex

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.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

LangChain

Leader

from $39/seat/moSubscriptionFree tier

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).

DeveloperFree
- 1 free seat
- 5k base traces/month
- Tracing and analytics
- Access to LangSmith platform
Plus$39/seat/month + usage (LCU/LSU), 10k traces included, 1 free small deployment
- Unlimited seats
- 10k base traces/month
- 1 free small serverless deployment
- Full tracing and analytics
- Evaluation tools
EnterpriseContact sales
- Advanced administration
- Dedicated support
- Custom deployments
- White-glove onboarding
- Proactive monitoring
- +1 more

as of 2026-08-21verify ↗

LlamaIndex

from $50/moHybridFree tier

Free tier with 10K monthly credits; pay-as-you-go starting at $50/month. Credit pricing: 1,000 credits = $1.25.

FreeFree
- Basic parsing
- Up to 130+ file formats
- File upload only
- Community support
Starter$50/month up to 400K credits
- Multiple parse tiers (Cost Effective, Agentic, Agentic Plus)
- Auto Mode smart tier routing
- Advanced table and chart extraction
- Structured JSON output
- Extraction agents
- +3 more
Pro$500/month up to 4M credits
- All Starter features
- Classification & splitting
- Sheets (spreadsheet data extraction)
- Agents Builder
- External data sources
- +3 more
EnterpriseContact sales
- Volume discount on credits
- 5x higher rate limits
- Enterprise SSO
- SaaS or Hybrid cloud deployment
- Dedicated account manager
- +1 more

as of 2026-08-21verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	LangChain	LlamaIndex
WebPlatforms	✓	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✗
HybridDeployment	✓	✓

Platforms

Web

LangChain✓

LlamaIndex✓

Deployment

Cloud / SaaS

LangChain✓

LlamaIndex✓

Self-hosted

LangChain✓

LlamaIndex✗

Hybrid

LangChain✓

LlamaIndex✓

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

LangChain

Leader

9 total

OpenAI
Anthropic
Cohere
Google
Azure OpenAI
Azure AI Search
Microsoft Fabric
Azure Kubernetes Service
OpaquePrompts

Independently observed

LlamaIndex

3 total

AWS
Microsoft Azure
GitHub

Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.