Comparison

LangChain vs Metaflow

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 →Metaflow full profile →

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★LangChain81

Metaflow58

Attribute comparison across 2 tools
Attribute	LangChainLeader	Metaflow
Vioscale score	81 / 100medium · 70%	58 / 100medium · 66%
Pricing
Free tierpricing.free_tier	✓	✓
Modelpricing.model	freemium	open_source
Price levelpricing.price_level	mid	free
Starting pricepricing.starting_price	$39	-
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	1,000	3
Security
Disclosure policysecurity.disclosure_policy	✓	-
Gdprsecurity.gdpr	✓	-
Hipaasecurity.hipaa	✓	-
Iso27001security.iso27001	✓	-
Scorecardsecurity.scorecard	5.9	7
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=pypi&package_name=metaflow&per_page=100 · Last 12m: 0
Reliability
Sla pctreliability.sla_pct	99.5	-
Status pagereliability.status_page	✓	✓
Adoption
Dependent reposadoption.dependent_repos	18,663	106
Github starsadoption.github_stars	145,063	10,244
Package downloads weeklyadoption.package_downloads_weekly	2,967,570	193,305
Activity
Commits last 30dactivity.commits_last_30d	100	18
Release
Cadence daysrelease.cadence_days	-	5
Historyrelease.history	20 items	20 items
License
Spdxlicense.spdx	MIT	Apache-2.0
Language
Primarylanguage.primary	Python	Python
Market
Availabilitymarket.availability	Available worldwide · HQ US	Available worldwide · Popular in US · HQ US

Score

Vioscale score

LangChain81 / 100medium · 70%

Metaflow58 / 100medium · 66%

Pricing

Free tier

LangChain✓

Metaflow✓

Model

LangChainfreemium

Metaflowopen_source

Price level

LangChainmid

Metaflowfree

Starting price

LangChain$39

Metaflow–

Transparent

LangChain✓

Metaflow–

Integrations

Count

LangChain1,000

Metaflow3

Security

Disclosure policy

LangChain✓

Metaflow–

Gdpr

LangChain✓

Metaflow–

Hipaa

LangChain✓

Metaflow–

Iso27001

LangChain✓

Metaflow–

Scorecard

LangChain5.9

Metaflow7

Soc2

LangChain✓

Metaflow–

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

MetaflowCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=metaflow&per_page=100 · Last 12m: 0

Reliability

Sla pct

LangChain99.5

Metaflow–

Status page

LangChain✓

Metaflow✓

Adoption

Dependent repos

LangChain18,663

Metaflow106

Github stars

LangChain145,063

Metaflow10,244

Package downloads weekly

LangChain2,967,570

Metaflow193,305

Activity

Commits last 30d

LangChain100

Metaflow18

Release

Cadence days

LangChain–

Metaflow5

History

LangChain20 items

Metaflow20 items

License

Spdx

LangChainMIT

MetaflowApache-2.0

Language

Primary

LangChainPython

MetaflowPython

Market

Availability

LangChainAvailable worldwide · HQ US

MetaflowAvailable worldwide · Popular in US · 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	Metaflow
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	-

Core

Tool role

LangChainLLM observability / eval

MetaflowAgent / RAG framework

Deployment

Self-hostable / OSS core

LangChain✓

Metaflow✓

Managed cloud available

LangChain✓

Metaflow✓

On-prem / VPC deployment

LangChain✓

Metaflow✓

Observability

LLM tracing / observability

LangChain✓

Metaflow-

Evaluation (offline / LLM-judge / human)

LangChain✓

Metaflow-

Dev

Prompt management + versioning

LangChain✓

Metaflow-

Tracking

Experiment tracking / model registry

LangChain-

Metaflow✓

Serving

Model serving / inference endpoint

LangChain✓

Metaflow-

Interop

OpenTelemetry / OpenLLMetry compatible

LangChain✓

Metaflow✓

Framework-agnostic

LangChain✓

Metaflow✓

Gateway

Multi-provider model support

LangChain✓

Metaflow✓

Data

No-train-on-customer-data guarantee

LangChainUnknown

Metaflow-

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

Metaflow

An open-source tool that enables data scientists and engineers to move from local experimentation to scalable production systems, with features for tracking experiments, versioning data and models, and orchestrating compute across multiple cloud platforms or self-hosted infrastructure.

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 ↗

Metaflow

Open sourceFree tier

as of 2026-08-14verify ↗

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	Metaflow
WebPlatforms	✓	✗
CLIPlatforms	✗	✓
Cloud / SaaSDeployment	✓	✓
Self-hostedDeployment	✓	✓
On-premiseDeployment	✗	✓
HybridDeployment	✓	✗

Platforms

Web

LangChain✓

Metaflow✗

CLI

LangChain✗

Metaflow✓

Deployment

Cloud / SaaS

LangChain✓

Metaflow✓

Self-hosted

LangChain✓

Metaflow✓

On-premise

LangChain✗

Metaflow✓

Hybrid

LangChain✓

Metaflow✗

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

Metaflow

3 total

AWS
Azure
Google Cloud

Independently observed

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