vioscaleAI
Comparison

LangChain vs LlamaIndex

On the evidence we track, LangChain leads this comparison with a composite score of 79/100. 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 →
Machine formatsMarkdownJSONGraphQLMarkdown is open. JSON and GraphQL need a free key.
★LangChain79
LlamaIndex65
Score
vioscaleAI score
LangChain79 / 100medium · 69%
LlamaIndex65 / 100medium · 69%
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
Certifications
LangChain–
LlamaIndexSOC 2 Type II
Disclosure policy
LangChain✓
LlamaIndex✓
Gdpr
LangChain✓
LlamaIndex✓
Hipaa
LangChain✓
LlamaIndex✓
Iso27001
LangChain✓
LlamaIndex–
Scorecard
LangChain5.8
LlamaIndex–
Soc2
LangChain✓
LlamaIndex✓
Trust center
Vulnerabilities
Reliability
Sla pct
LangChain99.5
LlamaIndex99.9
Status page
LangChain✓
LlamaIndex✓
Adoption
Dependent repos
LangChain18,663
LlamaIndex0
Github stars
LangChain147,461
LlamaIndex52,481
Package downloads weekly
LangChain3,725,877
LlamaIndex1,685,400
Activity
Commits last 30d
LangChain100
LlamaIndex28
Release
Cadence days
LangChain–
LlamaIndex17
History
LangChain20 items
LlamaIndex20 items
License
Spdx
LangChainMIT
LlamaIndexMIT
Language
Primary
LangChainPython
LlamaIndexPython
Market
Availability
Content
Faq
LangChain8 items
LlamaIndex8 items

Capabilities

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

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

A unified developer platform consisting of open-source frameworks and commercial tools for building, testing, monitoring, and deploying AI agents and LLM-powered applications.

Independently observed

LlamaIndex

A platform that uses AI models to parse and extract data from documents across 130+ file formats, supporting complex layouts, multiple languages, and multi-step extraction agents. Optimized for accuracy, cost, and latency at enterprise scale.

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/moHybridFree tier

Free Developer plan. Plus plan from $39/user/mo with unlimited seats. Enterprise custom pricing billed annually.

  • DeveloperFree
    • 1 free seat
    • 5000 base traces per month
    • Full LangSmith access
  • Plus$39/seat/month, unlimited seats, 10k traces/month included
    • Unlimited seats
    • 10000 base traces per month
    • 1 free small serverless deployment
    • Team collaboration
    • LangSmith Deployment service access
  • EnterpriseContact sales
    • Advanced administration options
    • Enhanced security controls
    • Priority support
    • Custom deployment options
as of verify ↗

LlamaIndex

from $50/moHybridFree tier

Free (10K credits/month), Starter $50/month (400K credits), Pro $500/month (400K + 800K bonus), Pay-as-you-go up to $5,000/month, Enterprise custom

  • FreeFree
    • Basic support
    • 100 users
    • 130+ file formats
    • 80+ languages supported
  • Starter$50/mo
    • Basic support
    • Multiple parse tiers
    • Auto Mode with up to 80% savings
    • Saved parse configs
    • Advanced table/chart extraction
    • +1 more
  • Pro$500/mo + $1000 one-time
    • Priority Slack support
    • All parsing and extraction capabilities
    • Extraction agents
    • Webhooks & API callbacks
    • Smart result caching
  • Pay-as-you-go$0.00 per credit
    • Priority Slack support
    • Flexible credit usage up to $5,000/month
  • EnterpriseContact sales
    • Volume discounts on credits
    • 5x higher rate limits
    • Enterprise SSO
    • SaaS or Hybrid cloud deployment
    • Dedicated account manager
    • +1 more
as of verify ↗

Platform & deployment

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

Platforms
Web
LangChain✓
LlamaIndex✓
CLI
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.

In common (1)
  • AWS

LangChain

Leader
11 total - 10 not shared
  • OpenAI
  • Anthropic
  • Cohere
  • Google
  • Azure OpenAI
  • Azure AI Search
  • Microsoft Fabric
  • Azure Kubernetes Service
  • OpaquePrompts
  • MCP (Model Context Protocol)
Independently observed

LlamaIndex

3 total - 2 not shared
  • Microsoft Azure
  • GitHub
Independently observed
Still deciding?

LangChain or LlamaIndex: which one depends on you

A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.

Free to run, no account needed to start. How the evaluation works

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