Directory / Agent Observability & Evals

PromptLayer

PromptLayer is the prompt management platform for AI teams. Version prompts, run LLM evals, and monitor agents in production with tracing, logs, and regression sets.

PromptLayer is a PromptLayer is a prompt management, observability, and evals platform for AI teams. It provides searchable request logs, agent traces, and tools to version, test, and monitor prompts, agents, and workflows. AI agent company selling to AI teams, including hackers, small teams, and growing teams building prompts, evals, and observability workflows. Latest disclosed round: Seed ($4.8M, 2025-02-09). About 17 employees, -28.0% over 6 months. 5,865 followers on X.

Agent Observability & EvalsObservability & evalsActivepromptlayer.com ↗

Headcount

—▼ -28.0%3m · 6m

src: Clay (LinkedIn)

X followers

5,865

——7d · 30d

src: x.com/promptlayer

Traffic / month

44.9K

src: Clay (web traffic)

Latest round

$4.8M

SeedFeb 9, 2025

src: blog.promptlayer.com/promptlayer-announces-our-4-8m-fundraise/

// profile

Product

Agent type: PromptLayer is a prompt management, observability, and evals platform for AI teams. It provides searchable request logs, agent traces, and tools to version, test, and monitor prompts, agents, and workflows.
Primary buyer: AI teams, including hackers, small teams, and growing teams building prompts, evals, and observability workflows
Integrations: —
MCP support: —
Pricing: Subscription · from $49 per month
HQ: New York City, US
Founded: 2021
LinkedIn: Profile ↗

// capital

Funding

Round: Seed
Amount: $4.8M
Date: Feb 9, 2025
Leads: {"Ivan Bercovich at ScOp VC and Peter Boyce II at Stellation Capital"}
Source: Announcement ↗
Investors: Alex Oppenheimer; Aparna Chennapragada; Ben Lang; Byrne Hobart; Gabriel Stengel; Geek Ventures; Gokul Rajaram; Ivan Bercovich; Jason Levin; Joe Teplow; Joshua Browder; Joshua Kamdjou; Logan Kilpatrick; Luis Voloch; Michael Akilian; Peter Boyce Ii; Romain Huet; Thales; Verissimo Ventures; Yaakov James Zar

// team

Hiring

Employees: 17
Growth 3m / 6m: — / -28.0%
Open roles (sample): —
X mentions this week: —
X handle: @promptlayer

// x.com

Sources

Last verified: Nov 4, 2026

Profile: https://promptlayer.com
Funding: https://blog.promptlayer.com/promptlayer-announces-our-4-8m-fundraise/
Headcount: Clay (LinkedIn)
Open jobs: —
Traffic: Clay (web traffic)
Pricing: https://www.promptlayer.com/pricing/
X metrics: https://x.com/promptlayer
X handle (homepage-verified): https://promptlayer.com
Clay enrichment: Clay enrichment 2026-11-04
Homepage: https://promptlayer.com
funding: https://blog.promptlayer.com/promptlayer-announces-our-4-8m-fundraise/
seed_type: Company homepage (curated market-map list)
funding_status: Verified (primary/press)
funding_source_type: primary

// related

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// faq

About PromptLayer

What does PromptLayer do?+

PromptLayer is the prompt management platform for AI teams. Version prompts, run LLM evals, and monitor agents in production with tracing, logs, and regression sets.

How much has PromptLayer raised most recently?+

Seed of $4.8M on Feb 9, 2025, led by {"Ivan Bercovich at ScOp VC and Peter Boyce II at Stellation Capital"}.

How many employees does PromptLayer have?+

About 17 (3-month growth —).

How is PromptLayer priced?+

Subscription, starting at $49 per month.

// cite

Cite this data

PromptLayer profile. Agent Market Map, The GTM Engineering Newsletter. Last verified Nov 4, 2026. https://agentmarketmaps.com/company/promptlayer