LangWatch

✓ verified, sync 2026-08-20

LangWatch is an LLM observability and evaluation platform designed to help AI teams monitor, evaluate, and optimize their LLM-powered applications. It provides full visibility into….

PricingFreemium

Rating5.0 on Toolify · 54 reviews

Category Large Language Models (LLMs)AI MonitorAI AgentAI TestingAI Developer ToolsPrompt Engineering +4

First indexed2026-08-20

What it does.

LangWatch is an LLM observability and evaluation platform designed to help AI teams monitor, evaluate, and optimize their LLM-powered applications. It provides full visibility into prompts, variables, tool calls, and agents across major AI frameworks, enabling faster debugging and smarter insights. LangWatch supports both offline and online checks with LLM-as-a-Judge and code-based tests, allowing users to scale evaluations in production and maintain performance. It also offers real-time monitoring with automated anomaly detection, smart alerting, and root cause analysis, along with features for annotations, labeling, and experimentations.

registry ID ndock:tool:langwatch

Features

LLM Observability
LLM Evaluation
LLM Optimization
AI agent testing
LLM Guardrails
LLM User Analytics

Pricing history.

auto-diffed on every sync: the changelog other directories don't keep

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