LangWatch

✓ verified, sync 2026-08-20

30 checks on record, most recent 2026-11-03 (responded).

PricingFreemium

Rating5.0 on Toolify · 54 reviews

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

First indexed2026-08-20

Observation record.

What was checked ourselves, with dates. Not vendor copy, not a rating.

Address confidence: low. The URL on file may not be LangWatch's own domain (for example a marketplace or parked host). The dates below describe checks against that URL; the link between that URL and LangWatch itself is not confirmed.

Most recent check 2026-11-03

Result: responded.

Checked on 30 distinct dates, since 2026-08-30. Checked roughly every 1.1 nights on this listing's own record.

2026-11-032026-11-022026-10-312026-10-302026-10-292026-10-282026-10-272026-10-262026-10-252026-10-242026-10-232026-10-22 +18

What this means: the 3-miss rule marks a listing discontinued only after three consecutive failed checks; a bot-wall response never counts toward that streak. the methodology

Price events.

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

The price was checked on 2026-10-18 and no change was observed since.

No approved price events on record

No approved price change is on record.

Compliance observation.

On this date this link was fetched, it answered, and its content matched a privacy policy. Nothing further is claimed.

Not legal advice. This is an observation, not a legal judgment: the link was fetched on this date, it responded, and its content matched a privacy policy. Nothing more is claimed.

Features

As listed by the vendor, unedited.

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

What it does.

The vendor's own description, unedited, not our claim.

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

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