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LangSmith vs Vellum: Which DevOps Tools Is Better in 2026?

Compare pricing, features, integrations, verified reviews, AI capabilities, security, and customer satisfaction, side by side, with no marketing spin.

LangSmith
LangSmith
Rating
,
Reviews
0
From
Custom

in DevOps Tools

Vellum
Vellum
Rating
,
Reviews
0
From
Custom

in DevOps Tools

Jump to scorecard Ask SIA

The Short Answer

LangSmith vs Vellum, in 15 seconds

Choose LangSmith if…

  • You prefer LangSmith's approach and ecosystem

Choose Vellum if…

  • You prefer Vellum's approach and ecosystem

Head-to-Head Scorecard

How LangSmith and Vellum score

It's evenly matched, each leads on 0 of 9 measured dimensions.

  • Customer Rating

    Average score from verified user reviews

    Even
    LangSmith
    No reviews
    Vellum
    No reviews

  • Review Volume

    Number of verified reviews, a proxy for adoption

    Even
    LangSmith
    0
    Vellum
    0

  • Entry Pricing

    Lowest published starting price (free plan = lowest)

    Even
    LangSmith
    Custom
    Vellum
    Custom

  • Free Access

    Availability of a free plan and/or free trial

    Even
    LangSmith
    Free trial
    Vellum
    Free trial

  • Integrations

    Number of listed third-party integrations

    Even
    LangSmith
    6
    Vellum
    6

  • Features

    Number of listed product capabilities

    Even
    LangSmith
    0
    Vellum
    0

  • AI Features

    Capabilities mentioning AI, automation or ML

    Even
    LangSmith
    ,
    Vellum
    ,

  • Security & Compliance

    Number of listed compliance certifications

    Even
    LangSmith
    2
    Vellum
    2

  • Platforms & Deployment

    Supported platforms and deployment options

    Even
    LangSmith
    4
    Vellum
    4

Feature Comparison

LangSmith vs Vellum feature breakdown

Search or filter the full feature matrix, core features, AI, integrations, APIs, security and compliance.

LangSmith
Vellum
Overview
User rating
,
,
Pricing model
Quote-based
Quote-based
Starting price
Custom
Custom
Free version
Free trial
Features
Key capabilities
,
,
AI features
,
,
Integrations & API
Integrations
OpenAIAnthropicLangChainLlamaIndexAWS BedrockPython SDK
OpenAIAnthropicLangChainLlamaIndexPython SDKGitHub Actions
Public API
Platforms
Deployment
CloudSaaS
CloudSaaS
Platforms
WebAPI
WebAPI
Mobile support
Security & Compliance
Compliance
SOC 2GDPR
SOC 2GDPR
Vendor
Company
,
,
Verified
Founded
2023
2023
Headquarters
San Francisco, California, USA
New York, New York, USA

Pricing Comparison

LangSmith vs Vellum pricing

Entry pricing, plan tiers and the cost factors that shape total cost of ownership.

LangSmith

Custom to start
ProfessionalCustom
  • Standard support
  • agent and LLM tracing
  • evaluation datasets and experiments
  • Integrations
EnterpriseCustom
  • Everything in Professional
  • prompt hub and playground
  • Dedicated support and onboarding
  • agent deployment

Vellum

Custom to start
ProfessionalCustom
  • visual workflow builder
  • Integrations
  • Standard support
  • prompt and eval management
EnterpriseCustom
  • Dedicated support and onboarding
  • deployment and versioning
  • monitoring
  • Advanced security and controls

Total cost of ownership factors

Free planLangSmith Vellum
Free trial to evaluateLangSmith Vellum
Transparent published pricingLangSmith Vellum
Public API (build vs. buy add-ons)LangSmith Vellum

Beyond list price, factor in implementation, training, add-ons and per-seat scaling when estimating total cost of ownership.

Pros & Cons

LangSmith vs Vellum: strengths and trade-offs

LangSmith

Pros

  • Free trial offered
  • Compliance: SOC 2, GDPR
  • Public API available

Cons

  • No free plan
  • Pricing is quote-based (less transparent)

Vellum

Pros

  • Free trial offered
  • Compliance: SOC 2, GDPR
  • Public API available

Cons

  • No free plan
  • Pricing is quote-based (less transparent)

Buyer Fit

Who should use LangSmith vs Vellum?

Startups

Either

Either keeps early-stage costs lowest with its entry tier.

Small businesses

Either

Either offers the most accessible pricing for lean teams.

Agencies

Either

Either connects to more tools for multi-client workflows.

Enterprises

Either

Either leads on compliance and breadth for complex needs.

Ecommerce

Either

Either integrates with more of the commerce stack.

SaaS companies

Either

Either is the more developer- and automation-friendly choice.

Integration overlap

Shared integrations (5)

OpenAIAnthropicLangChainLlamaIndexPython SDK

Only in LangSmith (1)

AWS Bedrock

Only in Vellum (1)

GitHub Actions

Keep Exploring

Other alternatives worth considering

Similar devops tools products buyers compare alongside LangSmith and Vellum.

Agenta

Agenta

Custom
Opik

Opik

Custom
Confident AI

Confident AI

Custom
Langfuse

Langfuse

Custom
Promptfoo

Promptfoo

Custom
Arize AI

Arize AI

Custom
More LangSmith alternatives →More Vellum alternatives →

Ask SIA which solution fits your business

SIA, Saaskart's AI buying assistant, weighs LangSmith and Vellum against your team size, budget, integrations and compliance needs, then recommends the right fit and the questions to ask each vendor.

Get a personalised recommendation

LangSmith vs Vellum, Frequently Asked Questions

What is the difference between LangSmith and Vellum?

LangSmith and Vellum are both DevOps Tools solutions. LangSmith is rated 0.0/5 by 0 users, while Vellum is rated 0.0/5 by 0 users. The main differences lie in pricing, features, and target audience.

Which is better, LangSmith or Vellum?

Based on user ratings, LangSmith scores higher at 0.0/5. The best choice depends on your team size, budget, and specific requirements.

Which is cheaper, LangSmith or Vellum?

Both products have custom pricing. We recommend contacting both vendors for a quote tailored to your team size.

Does LangSmith or Vellum have a free plan?

Neither LangSmith nor Vellum currently offers a free plan, but LangSmith provides a free trial.

Can I switch from LangSmith to Vellum?

Switching between LangSmith and Vellum is possible. Both support data export. Check integration compatibility and plan for data migration to minimise disruption to your team.

Who should use LangSmith vs Vellum?

LangSmith is best suited for teams that prioritise enterprise features. Vellum works well for teams needing advanced capabilities.

Our Verdict

The bottom line on LangSmith vs Vellum

Best Overall

Either

It's a tie balances user satisfaction and proven adoption.

Best for Startups

Either

It's a tie has the friendliest entry point for new teams.

Best for Enterprise

Either

It's a tie leads on compliance and feature breadth.

Best Value

Either

It's a tie delivers the lowest cost to get started.

Best AI Features

Either

Comparable AI capabilities on both sides.

Highest Rated

Either

Both earn equal user ratings.

Ready to decide between LangSmith and Vellum?

Visit LangSmith Visit Vellum Ask SIA
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