vioscaleAI
Comparison

LangChain vs LangSmith

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 →LangSmith full profile →
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★LangChain79
LangSmith52
Score
vioscaleAI score
LangChain79 / 100medium · 69%
LangSmith52 / 100low · 12%
Pricing
Free tier
LangChain✓
LangSmith–
Model
LangChainfreemium
LangSmith–
Price level
LangChainmid
LangSmith–
Starting price
LangChain$39
LangSmith–
Transparent
LangChain✓
LangSmith–
Integrations
Count
LangChain1,000
LangSmith–
Security
Disclosure policy
LangChain✓
LangSmith–
Gdpr
LangChain✓
LangSmith–
Hipaa
LangChain✓
LangSmith–
Iso27001
LangChain✓
LangSmith–
Scorecard
LangChain5.8
LangSmith–
Soc2
LangChain✓
LangSmith–
Trust center
Vulnerabilities
Reliability
Sla pct
LangChain99.5
LangSmith–
Status page
LangChain✓
LangSmith✓
Adoption
Dependent repos
LangChain18,663
LangSmith–
Github stars
LangChain147,461
LangSmith–
Package downloads weekly
LangChain3,725,877
LangSmith–
Activity
Commits last 30d
LangChain100
LangSmith–
Release
History
LangChain20 items
LangSmith–
License
Spdx
LangChainMIT
LangSmith–
Language
Primary
LangChainPython
LangSmith–
Market
Availability
Content
Faq
LangChain8 items
LangSmith4 items

Capabilities

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

Core
Tool role
LangChainLLM observability / eval
LangSmithLLM observability / eval
Deployment
Self-hostable / OSS core
LangChain✓
LangSmith✗
Managed cloud available
LangChain✓
LangSmith✓
On-prem / VPC deployment
LangChain✓
LangSmith✗
Observability
LLM tracing / observability
LangChain✓
LangSmith✓
Evaluation (offline / LLM-judge / human)
LangChain✓
LangSmith✓
Dev
Prompt management + versioning
LangChain✓
LangSmith-
Tracking
Experiment tracking / model registry
LangChain✓
LangSmith-
Serving
Model serving / inference endpoint
LangChain✓
LangSmith✗
Interop
OpenTelemetry / OpenLLMetry compatible
LangChain✓
LangSmith-
Framework-agnostic
LangChain✓
LangSmith✓
Gateway
Multi-provider model support
LangChain✓
LangSmith-
Data
No-train-on-customer-data guarantee
LangChainUnknown
LangSmith-

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

LangSmith

LangSmith enables users to observe, evaluate, and deploy AI agents through a web interface that requires no coding. The platform provides tools for agent engineering and monitoring.

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 ↗

LangSmith

Pricing not documented yet.

Platform & deployment

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

Platforms
Web
LangChain✓
LangSmith✓
Deployment
Cloud / SaaS
LangChain✓
LangSmith✓
Self-hosted
LangChain✓
LangSmith✗
Hybrid
LangChain✓
LangSmith✗

Integrations

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

LangChain

Leader
11 total
  • OpenAI
  • Anthropic
  • Cohere
  • Google
  • Azure OpenAI
  • Azure AI Search
  • Microsoft Fabric
  • Azure Kubernetes Service
  • OpaquePrompts
  • AWS
  • MCP (Model Context Protocol)
Independently observed

LangSmith

Not documented yet.

Still deciding?

LangChain or LangSmith: 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.