vioscale
Comparison

LangChain vs LangSmith

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 →LangSmith full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
★LangChain81
LangSmith57
Score
Vioscale score
LangChain81 / 100medium · 70%updating
LangSmith57 / 100low · 12%updating
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
LangChain5.9
LangSmith–
Soc2
LangChain✓
LangSmith–
Vulnerabilities
Reliability
Sla pct
LangChain99.5
LangSmith–
Status page
LangChain✓
LangSmith✓
Adoption
Dependent repos
LangChain18,663
LangSmith–
Github stars
LangChain145,063
LangSmith–
Package downloads weekly
LangChain2,967,570
LangSmith–
Activity
Commits last 30d
LangChain100
LangSmith–
Release
History
LangChain20 items
LangSmith–
License
Spdx
LangChainMIT
LangSmith–
Language
Primary
LangChainPython
LangSmith–
Market
Availability

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

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

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/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 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
9 total
  • OpenAI
  • Anthropic
  • Cohere
  • Google
  • Azure OpenAI
  • Azure AI Search
  • Microsoft Fabric
  • Azure Kubernetes Service
  • OpaquePrompts
Independently observed

LangSmith

Not documented yet.

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