Products

LangWatch

Uses AISkill

Trace, test, route and govern every LLM call in your company, from your own agents to the coding assistants your engineers use.

langwatch.ai Source★ 1,793MITAI Models & Agents / Prompts, Evals & LLM Observability

AI Benchmark
Desktop
Mobile
Monthly visits
30.1K
Up9.4%MoMSep 2026
Public revenue
Undisclosed
No public revenue evidence yet
Entry price
$34/mo
Higher than 63% of peersNiche median $21.595/mo
Launched
2y ago
2024-04-24 · Est.

Traffic

Monthly visitsData through Sep 2026 · Oct 2026 pending
Events12 changes · 3 marketing moves

Marketing moves

Launches, search & content, referrals, promotions
  • Launched on Product HuntLaunch

    See what your Claude Code sessions actually cost

    Jul 30 · 4mo agoLaunch page

  • Launched on Show HN (9 pts)Launch

    Langy, an automated AI engineer (we gave it a robot body) [video] — Founder here. Langy is an AI engineer that lives inside our platform, LangWatch. It reads your production traces, writes Scenario tests an…

    Jul 22 · 4mo agoLaunch page

  • Launched on Show HN (4 pts)Launch

    Evals Skills — Hello HN I'm Rogerio, co-founder of LangWatch This past month we've completely changed the way we onboard new customers now on LangWatch,…

    Mar 23 · 8mo agoLaunch page

  • Launched on Product HuntLaunch

    Agentic testing for agentic codebases

    Jun 26, 2025 · 17mo agoLaunch page

  • Launched on Product HuntLaunch

    Evaluate & optimize your LLM performance with DSPy

    Dec 19, 2024 · 23mo agoLaunch page

Third-party reviews & case dossiers

Acquisition breakdowns, engineer reviews & open-source metrics
Show HN
2026-03-23Source
Post excerpt:
Hello HN I'm Rogerio, co-founder of LangWatch This past month we've completely changed the way we onboard new customers now on LangWatch, instead of giving them instructions on how to instrument, cookbooks or UIs to build evals, or docs on how to write Scenario agent simulation tests, we simply give them skills now, or ready to copy-and-paste prompts. This h
Show HN
2026-07-22Source
Post excerpt:
Founder here. Langy is an AI engineer that lives inside our platform, LangWatch. It reads your production traces, writes Scenario tests and evaluations for the problems it finds, opens a pull request on your repo, and proves the fix by running those simulations in CI. A human still merges. Reachy robot from Hugging Face arrived on the same week we were plani

Open Source & Agent Ecosystem

GitHub · MCP / Skill

Traffic sources

Sep 2026

Traffic breakdown

Channels

  • Direct40%
  • Organic Search32%
  • Referrals11%
  • Social6%
  • Other11%

Countries

  • United States31%
  • Brazil13%
  • India13%
  • Canada4%
  • France3%

Search

Domain authority —Domain registered 2023-09-17

KeywordMonthly volume
langwatch1,290
in claude how to see which device used how much token?290
open telimery tracker claude260
langwatch ai240
langwatch redteaming180

Traffic data: Vaneform

Pricing

Developer
$0
Growth
$34/mo
200k events included, then $6 / 100k · 30-day retention included (extend at $4 / GB) · Unlimited lite-users · Unlimited simulations, evals, prompts
Enterprise
Contact sales
Hybrid, self-hosted or on-prem · Custom data retention · Custom SSO / RBAC · Audit logs & SLAs

Trial: None · 1 paid tier ($34) · Enterprise custom tier · Observed 2026-11-04 · Pricing page

Entry price $34/mo, Higher than 63% of peers; “Prompts, Evals & LLM Observability” median is $21.595/mo.View pricing benchmark

Pages & changes

Tracked since 2024-04-24

Key pages

Weekly snapshots
langwatch.ai/ Snapshot 2026-11-04

Changes

  1. Nov 1 · 14d ago

    Homepage headline (H1) changed to “When your agents get complex”Positioning

    Build better AI agents with→When your agents get complex

  2. Nov 1 · 14d ago

    Adopted technology: Cloudflare Browser InsightsFeatures

    —→Cloudflare Browser Insights

  3. Nov 1 · 14d ago

    Removed technology: Framer SitesFeatures

    Framer Sites→—

  4. Nov 1 · 14d ago

    Removed technology: Google Font APIFeatures

    Google Font API→—

  5. Nov 1 · 14d ago

    Removed technology: HubSpot ChatFeatures

    HubSpot Chat→—

  6. Nov 1 · 14d ago

    Removed technology: Priority HintsFeatures

    Priority Hints→—

Design

First-screen visual analysis & :root CSS

Editorial (Light canvas, airy density) featuring headline over large product shot layout and product ui screenshot / component visuals.

First-screen preview · click to zoom

First-screen pitch & conversion flow

“Agent Observability & Evals for AI Platform teams”

Headline Over Large Product Shot hero structure paired with book demo / contact sales CTA and no explicit trust bar.

Conversion path: Headline Over Large Product Shot + Product UI Screenshot / Component → Book Demo / Contact Sales

Palette · click to copy

5-D design score7.9 / 10
Typography
8.0
Color & Contrast
8.0
Layout & Spacing
8.0
Craft & Polish
8.0
Distinctiveness
7.0

Structure

Fonts
Instrument Serif / Inter / JetBrains Mono
Primary visual
Product UI Screenshot / Component
Social proof
No Explicit Trust Bar
Navigation
Full-Width Top Bar
Theme & density
Light · Airy
Corners & depth
Pill · With shadow
Preview full AI design brief (includes :root CSS variables & layout rules)Style tokens only; never copy brand names, logos, copy, or images
# Design Brief: Editorial (with Gradient Glow)

Oversized serif headlines, narrow reading columns, and magazine-inspired grid layouts.

## Design Tokens

```css
:root {
  --background: #fbf6f1;
  --surface: #ffffff;
  --foreground: #1a1a1a;
  --muted-foreground: #6a6a6a;
  --accent: #e25c12;
  --radius: 9999px;
  --font-heading: "Instrument Serif", serif;
  --font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}
```

Color area ratio: Background #FBF6F1 (~46%) · Surface #FFFFFF (~22%) · Text #1A1A1A (~14%) · Muted Text #6A6A6A (~8%) · Accent #E25C12 (~10%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.

## Layout & Conversion Structure

- Hero layout: Headline Over Large Product Shot
- Navigation: Full-Width Top Bar
- Theme & density: Light · Airy
- Border radius & elevation: Pill; use elevation shadows to separate layers
- Primary visual medium: Product UI Screenshot / Component
- Conversion CTA: Book Demo / Contact Sales
- Headline hook: Target Audience Callout
- Hero components: Large Hero Product Shot, Code & Terminal
- Spatial layout notes: Headline Over Large Product Shot hero structure paired with book demo / contact sales CTA and no explicit trust bar.
- Visual summary: Editorial (Light canvas, airy density) featuring headline over large product shot layout and product ui screenshot / component visuals.

## Avoid

- Generic SaaS hero templates
- Cramped multi-column feature grids
- Neon cyber accents

Implement the UI following the design tokens and layout specifications above: use only these color variables, and reserve the accent color strictly for primary actions and active states. Adopt only this visual style—never copy any reference product’s brand name, logo, copy, or imagery.

Questions & evidence

How much does LangWatch cost?
Developer: $0; Growth: $34/mo; Enterprise: Contact sales. Observed 2026-11-04. Check the source for current billing terms, usage limits and taxes.Source
How much website traffic does LangWatch get?
Vaneform estimates 30.1K website visits in 2026-09. Visits can include repeat visits; this estimate measures web traffic separately from paying customers or revenue.Source
What is LangWatch and what platforms does it support?
LangWatch is catalogued under Prompts, Evals & LLM Observability: Trace, test, route and govern every LLM call in your company, from your own agents to the coding assistants your engineers use.. Supported platforms: CLI / SDK.
Is LangWatch open source?
LangWatch has a public repository (https://github.com/langwatch/langwatch) under the MIT license, recording 1,793 GitHub stars.Source

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