Comparison

LangChain vs Weights & Biases

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 →Weights & Biases full profile →

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★LangChain81

Weights & Biases67

Attribute comparison across 2 tools
Attribute	LangChainLeader	Weights & Biases
Vioscale score	81 / 100medium · 70%	67 / 100low · 38%
Pricing
Free tierpricing.free_tier	✓	-
Modelpricing.model	freemium	commercial
Price levelpricing.price_level	mid	-
Starting pricepricing.starting_price	$39	-
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	1,000	8
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: 1 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=wandb&per_page=100 · Last 12m: 0 · Max severity: HIGH
Reliability
Sla pctreliability.sla_pct	99.5	-
Status pagereliability.status_page	✓	✓
Adoption
Dependent reposadoption.dependent_repos	18,663	9,299
Github starsadoption.github_stars	145,063	11,240
Package downloads weeklyadoption.package_downloads_weekly	2,967,570	-
Activity
Commits last 30dactivity.commits_last_30d	100	100
Release
Cadence daysrelease.cadence_days	-	16
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	MIT	MIT
Language
Primarylanguage.primary	Python	Python
Market
Availabilitymarket.availability	Available worldwide · HQ US	-

Score

Vioscale score

LangChain81 / 100medium · 70%

Weights & Biases67 / 100low · 38%

Pricing

Free tier

LangChain✓

Weights & Biases–

Model

LangChainfreemium

Weights & Biasescommercial

Price level

LangChainmid

Weights & Biases–

Starting price

LangChain$39

Weights & Biases–

Transparent

LangChain✓

Weights & Biases–

Integrations

Count

LangChain1,000

Weights & Biases8

Security

Disclosure policy

LangChain✓

Weights & Biases✓

Gdpr

LangChain✓

Weights & Biases✓

Hipaa

LangChain✓

Weights & Biases✓

Iso27001

LangChain✓

Weights & Biases✓

Scorecard

LangChain5.9

Weights & Biases–

Soc2

LangChain✓

Weights & Biases✓

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

Weights & BiasesCount: 1 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=wandb&per_page=100 · Last 12m: 0 · Max severity: HIGH

Reliability

Sla pct

LangChain99.5

Weights & Biases–

Status page

LangChain✓

Weights & Biases✓

Adoption

Dependent repos

LangChain18,663

Weights & Biases9,299

Github stars

LangChain145,063

Weights & Biases11,240

Package downloads weekly

LangChain2,967,570

Weights & Biases–

Activity

Commits last 30d

LangChain100

Weights & Biases100

Release

Cadence days

LangChain–

Weights & Biases16

History

LangChain20 items

Weights & Biases20 items

License

Spdx

LangChainMIT

Weights & BiasesMIT

Language

Primary

LangChainPython

Weights & BiasesPython

Market

Availability

LangChainAvailable worldwide · HQ US

Weights & Biases–

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	Weights & Biases
Core
Tool role	LLM observability / eval	End-to-end ML platform
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	-

Core

Tool role

LangChainLLM observability / eval

Weights & BiasesEnd-to-end ML platform

Deployment

Self-hostable / OSS core

LangChain✓

Weights & Biases✓

Managed cloud available

LangChain✓

Weights & Biases✓

On-prem / VPC deployment

LangChain✓

Weights & Biases✓

Observability

LLM tracing / observability

LangChain✓

Weights & Biases✓

Evaluation (offline / LLM-judge / human)

LangChain✓

Weights & Biases✓

Dev

Prompt management + versioning

LangChain✓

Weights & Biases✓

Tracking

Experiment tracking / model registry

LangChain-

Weights & Biases✓

Serving

Model serving / inference endpoint

LangChain✓

Weights & Biases✓

Interop

OpenTelemetry / OpenLLMetry compatible

LangChain✓

Weights & Biases-

Framework-agnostic

LangChain✓

Weights & Biases✓

Gateway

Multi-provider model support

LangChain✓

Weights & Biases-

Data

No-train-on-customer-data guarantee

LangChainUnknown

Weights & Biases-

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

Weights & Biases

An integrated platform for developing AI applications, from training and fine-tuning models to deploying agents in production, with comprehensive experiment tracking, model management, and LLM application 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 2026-08-21verify ↗

Weights & Biases

Pricing not documented yet.

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	Weights & Biases
WebPlatforms	✓	✓
iOSPlatforms	✗	✓
CLIPlatforms	✗	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✓
On-premiseDeployment	✗	✓
HybridDeployment	✓	✗

Platforms

Web

LangChain✓

Weights & Biases✓

iOS

LangChain✗

Weights & Biases✓

CLI

LangChain✗

Weights & Biases✓

Deployment

Cloud / SaaS

LangChain✓

Weights & Biases✓

Self-hosted

LangChain✓

Weights & Biases✓

On-premise

LangChain✗

Weights & Biases✓

Hybrid

LangChain✓

Weights & Biases✗

Integrations

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

In common (1)

OpenAI

LangChain

Leader

9 total - 8 not shared

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

Independently observed

Weights & Biases

8 total - 7 not shared

Alibaba Qwen
Meta Llama
Microsoft Phi
Hangzhou DeepSeek
Z.ai GLM
MoonshotAI Kimi
CoreWeave

Independently observed

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