Laminar vs LangSmith

Detailed side-by-side comparison to help you choose the right tool

Laminar

🔴Developer

AI observability

AI tracing and evaluation platform for LLM products and agents

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Starting Price

Custom
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LangSmith

🔴Developer

AI Observability

LangSmith is LangChain's commercial observability, evaluation and prompt management platform for LLM apps and agents in production.

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Starting Price

Free
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Feature Comparison

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FeatureLaminarLangSmith
CategoryAI observabilityAI Observability
Pricing Plans6 tiers59 tiers
Starting PriceFree
Key Features
    • • Tracing for any LLM stack via Python/TypeScript SDKs or OpenTelemetry
    • • LLM-as-judge, code-based and pairwise evaluations
    • • Versioned prompts with production A/B traffic splits

    Laminar - Pros & Cons

    Pros

    • ✓Clear pricing with concrete data limits, retention windows, and overage costs.
    • ✓Debugger is aimed specifically at long-running agents, where ordinary request logs are not enough.
    • ✓Free plan is practical for a small developer project or proof of concept.
    • ✓On-premise option makes it more plausible for teams with strict data-control requirements.

    Cons

    • ✗Smaller ecosystem than Langfuse or LangSmith, so integrations and community examples may be thinner.
    • ✗Signals pricing adds another usage dimension that teams need to monitor.
    • ✗Mostly developer-focused; non-technical product teams will still need engineering help to instrument apps.

    LangSmith - Pros & Cons

    Pros

    • ✓Best-in-class integration if you already use LangChain or LangGraph.
    • ✓Eval suites are practical enough to actually gate releases on, not just dashboards.
    • ✓Self-hosted Enterprise tier covers SOC 2 and regulated environments.

    Cons

    • ✗Per-trace pricing on Plus surprises teams that scale production traffic quickly.
    • ✗Non-LangChain stacks work but trade ergonomic polish for SDK overhead.
    • ✗Some eval features require additional LLM spend on top of the platform fee.

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    🔒 Security & Compliance Comparison

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    Security FeatureLaminarLangSmith
    SOC2—✅ Yes
    GDPR—✅ Yes
    HIPAA——
    SSO—✅ Yes
    Self-Hosted—🔀 Hybrid
    On-Prem—✅ Yes
    RBAC—✅ Yes
    Audit Log—✅ Yes
    Open Source—❌ No
    API Key Auth—✅ Yes
    Encryption at Rest—✅ Yes
    Encryption in Transit—✅ Yes
    Data Residency—US, EU
    Data Retention—configurable
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    Ready to Choose?

    Read the full reviews to make an informed decision

    Review LaminarReview LangSmith