PromptLayer
PrivateLast Round
Seed
Feb 9, 2025
Total Funding Raised
$4.8M
Company Overview
PromptLayer operates in AI, Data & Cloud Infrastructure and is based in New York City, New York. Its latest recorded funding round was a Seed round in February 2025.
PromptLayer is a business/productivity software company that provides a platform for prompt engineers to track, debug, and collaborate on LLM requests.
Sector
AI, Data & Cloud Infrastructure
Verticals
NLP & Conversational AI, ML Platforms
Business Model
B2B
Customer Profile
Subscription SaaS, Usage-Based SaaS
AI Layer
Infrastructure
Historical Pricing
Historical view of private secondary pricing and transaction trends.
PromptLayer Comparables
Compare PromptLayer with similar companies based on industry and business-model similarity.
| Company | Similarity | Market Cap |
|---|---|---|
| Humanloop | 91% | |
| HoneyHive | 90% | |
| Athina AI | 90% |
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PromptLayer Funding Rounds
Historical fundraising activity
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Key People
Founding team and executive leadership
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PromptLayer Investors
Notable investors and investment history
| Investor | Rounds |
|---|---|
| Stellation Capital | Seed |
| Thales Partners - Consultoria de Investimentos | Seed |
| ScOp Venture Capital | Seed |
| Verissimo Ventures | Seed |
Market signals
Structured signals derived from secondary market and firmographic data.
- Mar 26, 2026
Added Gertner, a technology/AI startup, as a customer.
- Mar 26, 2026
Added Speak Ai Inc., a technology/AI startup, as a customer.
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PromptLayer Filings
Explore SEC and related filing metadata, where available.
| Type | Date | Amount Offered | Amount Sold | Filing | Pages | Download |
|---|
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Frequently Asked Questions
Common questions about PromptLayer's valuation, stock price, and market status.
Is PromptLayer a public or private company?
PromptLayer is a private company.
What is the current stock price of PromptLayer?
PromptLayer is a private company, so its shares have no public market price. Caplight tracks PromptLayer's secondary market activity and provides MarketPrice™ estimates of its share price to Caplight users.
How much is PromptLayer worth (valuation)?
Valuation information for PromptLayer is not publicly available.
Can I buy PromptLayer stock?
PromptLayer shares may be available on secondary markets subject to transfer restrictions. Caplight facilitates secondary market transactions for accredited investors.
When was PromptLayer's last funding round?
PromptLayer's most recent funding round was Seed on February 9, 2025.
Who are the main investors in PromptLayer?
Key investors in PromptLayer include Stellation Capital, ScOp Venture Capital.
Will PromptLayer IPO soon?
No public IPO plans have been announced for PromptLayer.
How can I track PromptLayer secondary market activity?
Caplight tracks bids, offers, and trades in PromptLayer's shares on secondary markets.