Who should use LangWatch?

LangWatch is a B2B product built for ai developers.

What platforms does LangWatch run on?

LangWatch runs on the web and API. It can also be self-hosted.

Is LangWatch still maintained?

The GitHub repository shows 1.3k commits in the last 90 days.

What projects are similar to LangWatch?

Similar projects tracked by PulseGate include langwatch-scenario, LangSmith, and LangSmith.

Who develops LangWatch?

LangWatch is developed by LangWatch.

How long has LangWatch been around?

LangWatch first shipped in 2023.

Back to the index

LangWatch

Name: LangWatch
Price: 49 USD
Author: LangWatch

langwatch.aiAI

LangWatch is a platform for testing, evaluating, and monitoring AI agents in production environments. It offers simulation-based testing, LLM evaluation, observability, prompt management, and governance features. Designed for AI engineering teams, it helps ensure agent reliability, safety, and compliance before and after deployment.

PaidApache-2.0WebSelf-hostedCloud-managedAPI

Visit langwatch.ai

3.4kstars

328forks

6features

2023since

Overview

6 features

LangWatch sits in PulseGate's AI category. AI agents and LLMs failing unpredictably in production due to insufficient testing, monitoring, and governance. LangWatch is a B2B product aimed at ai developers. Pricing is paid, from $49. It ships for the web and API, and it can be self-hosted.

LangWatch builds and maintains LangWatch, and it first shipped in 2023. Development happens publicly on GitHub with 3.4k stars and 1.3k commits in the last 90 days. Key capabilities include Agent Testing, LLM Evaluation, and observability. It exposes integrations via a public API.

Summary written by a language model from the project’s public pages.

Agent Testing
LLM Evaluation
Observability
AI Governance
Red Teaming
Prompt Management

Built with & integrations

Hosting

Cloudflare

AI providers

google_geminimultipleopenai

Connectors

API

Runs on

BrowserSelf-hostedCloud-managedAPI-only

Detected from

multiple: bLangChain in the HTML
Cloudflare: cf-ray header
google_gemini: aiplatform in the HTML

Trust & compliance

License

Apache-2.0

Verified signals

HTTPSPrivacy Policy Terms of Service GitHub · ★ 3.4kActive maintenance

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed22 Jul · 14:59 UTC
Show HN: Langy, an automated AI engineer (we gave it a robot body) [video] verified against its public source
Source: PulseGate · Open
Indexed10 Jul · 11:21 UTC
langwatch/langwatch verified against its public source
Source: PulseGate · Open

Frequently asked questions about LangWatch

What does LangWatch do?: AI agents and LLMs failing unpredictably in production due to insufficient testing, monitoring, and governance. It is catalogued under AI on PulseGate.
Who should use LangWatch?: LangWatch is a B2B product built for ai developers.
How much does LangWatch cost?: Paid plans start at $49.
What platforms does LangWatch run on?: LangWatch runs on the web and API. It can also be self-hosted.
Is LangWatch still maintained?: The GitHub repository shows 1.3k commits in the last 90 days.
What projects are similar to LangWatch?: Similar projects tracked by PulseGate include langwatch-scenario, LangSmith, and LangSmith.langwatch-scenario LangSmith LangSmith
Who develops LangWatch?: LangWatch is developed by LangWatch.
How long has LangWatch been around?: LangWatch first shipped in 2023.

At a glance

Pricing: Paid · from $49
Platforms: Api · Web
Languages: English
Open source: Yes · ★ 3.4k
License: Apache-2.0
Built for: ai developers
Model: B2B
Solves: AI agents and LLMs failing unpredictably in production due to insufficient testing, monitoring, and governance.

Registered as

GitHub: langwatch/langwatch

Developer

Community-driven

GitHub

Open source

View on GitHub

Stars: 3,360
Forks: 328
Open issues: 731
Last commit: 10 Jul 2026
Commits 90d: 1,278
Contributors: 35
Authorship: Community-driven
Default branch: main
Latest release: langwatch-3.5.0 · 29 Jun 2026

Index record

Identity confidence: High · 94.4
Indexed: 10 Jul 2026
Lifecycle: Alive
Last seen: 22 Jul 2026

Identity audit (12)

Slug: langwatch-langwatch-langwatch-ai
Lifecycle last checked: 8 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 22 Jul 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Canonical URL: https://langwatch.ai/

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