LangSmith

Developer platform for tracing, evaluating, and monitoring LLM applications and agents.

Pricing: free, seat, usage
Free tier: true
License: proprietary
Open source: No

Editorial review

LangSmith has not yet been editorially reviewed. User reviews and published field data below are unaffected — we say so rather than implying an editorial verdict.

Facts & attributes

Every value carries its evidence state. “—” means unknown — never a silent default (P-02).

Identity · Taxonomy

Documentation(HTTPS URL): https://docs.smith.langchain.comVerified
Tags(open-source;cloud-native): LLM observability, agent tracing, evaluation, LLM gateway, deployment, OpenTelemetryVerified

Platform · Deployment

Delivery model(SaaS;self-hosted;desktop;mobile;embedded;managed-cloud;appliance): SaaS, managed-cloud, self-hostedVerification pending

Pricing · Licensing

Free plan(true/false): trueVerification pending
Free trial(true/false): falseVerification pending
License model(proprietary;open-source;source-available;dual-license): proprietaryVerification pending
Pricing model(free;subscription;usage;seat;asset;transaction;revenue-share;perpetual;custom): free, seat, usageVerified
Starting price(29): 39Verified

Features · Product · Fit

Core capabilities(authoring;automation;analytics): Step-by-step agent tracing with OpenTelemetry and framework-native SDKs, Real-time production monitoring with online LLM-as-judge and code evals, Automatic trace clustering and error analysis with Insights, SmithDB purpose-built trace storage with sub-second queries at scale, Cost tracking with webhook and PagerDuty alertsVerification pending

Api · Integrations · Ecosystem

API available(true/false): trueVerification pending
CLI(true/false): trueVerification pending

Audience · Use · Case

Best for(Neutral editorial summary): Engineering teams tracing, evaluating, and monitoring LLM agents in production with any frameworkVerification pending
Company-size fit(individual;SMB;mid-market;enterprise): individual, SMB, mid-market, enterpriseVerification pending
Primary use cases(build;monitor;automate): Finding failures fast with agent tracing, Monitoring agent quality and cost in production, Debugging multi-turn chat interactions, Keeping sensitive traces self-hosted in your VPC, Deploying and scaling long-running agentsVerification pending
Skill level(beginner;intermediate;advanced;specialist): intermediateVerification pending

Vendor · Maintainer

Vendor type(commercial;foundation;community;government;consortium;individual): commercialVerification pending

User reviews

Review policy

No published reviews yet.