Who should use PromptLayer?

PromptLayer is a B2B product built for AI engineering teams.

Yes — there is a free tier, with paid plans for advanced use.

Is PromptLayer still maintained?

Unverified. PromptLayer has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to PromptLayer?

Similar projects tracked by PulseGate include PingPrompt, PromptEval, and PromptLabHub.

Who develops PromptLayer?

PromptLayer is developed by PromptLayer.

When did PromptLayer launch?

PromptLayer first shipped in 2023.

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PromptLayer

Name: PromptLayer
Author: PromptLayer

promptlayer.comInfrastructure

PromptLayer is an infrastructure platform for AI engineering teams to version, test, and monitor prompts and agents. It provides tools for collaboration, evaluation, and observability, enabling teams to manage prompt lifecycles and ensure reliable AI agent performance.

FreemiumWebCloud-managed

Visit promptlayer.com

Overview

7 features

PromptLayer is a LLM eval & observability project. Managing, testing, and monitoring AI prompts and agents for engineering teams to ensure reliability and collaboration. It is built as a B2B product for AI engineering teams. PromptLayer follows a freemium model. It ships for the web.

PromptLayer builds and maintains PromptLayer, and it first shipped in 2023. Among its 7 catalogued features are prompt versioning, agent testing, and prompt monitoring.

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

Prompt versioning
Agent testing
Prompt monitoring
Visual editor
Collaboration tools
Evals and regression sets
Observability stack

Built with & integrations

Framework

Next.js

Hosting

Vercel

Runs on

BrowserCloud-managed

Detected from

Next.js: /_next/static/ in the HTML · __next_f in the HTML
Vercel: x-vercel-id header · x-vercel-cache header

Trust & compliance

Verified signals

HTTPSFree tier

Indexing history

What PulseGate has recorded for this listing

Indexed14 Jun · 14:17 UTC
Listing verified against its public source
Source: PulseGate · Open

Frequently asked questions about PromptLayer

What does PromptLayer do?: Managing, testing, and monitoring AI prompts and agents for engineering teams to ensure reliability and collaboration. It is catalogued under LLM eval & observability on PulseGate.
Who should use PromptLayer?: PromptLayer is a B2B product built for AI engineering teams.
Is PromptLayer free?: Yes — there is a free tier, with paid plans for advanced use.
What platforms does PromptLayer run on?: PromptLayer runs on the web.
Is PromptLayer still maintained?: Unverified. PromptLayer has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to PromptLayer?: Similar projects tracked by PulseGate include PingPrompt, PromptEval, and PromptLabHub.PingPrompt PromptEval PromptLabHub
Who develops PromptLayer?: PromptLayer is developed by PromptLayer.
When did PromptLayer launch?: PromptLayer first shipped in 2023.

At a glance

Pricing: Freemium · free tier
Platforms: Web
Languages: English
Built for: AI engineering teams
Model: B2B
Solves: Managing, testing, and monitoring AI prompts and agents for engineering teams to ensure reliability and collaboration.

Index record

Identity confidence: High · 95
Indexed: 14 Jun 2026
Lifecycle: Alive
Last seen: 14 Jun 2026

Identity audit (12)

Slug: promptlayer-version-and-test-your-agents-promptlayer-com
Lifecycle last checked: 8 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 14 Jun 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: Derived from the project's own page and URL.
Category from: Assigned by the 2026 taxonomy migration.
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://promptlayer.com/

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