PromptLayer

Based in New York, US, and founded in 2021 by co-founders Jared Zoneraich, Jonathan Pedoeem, Magniv, Inc. , doing business as PromptLayer, specializes in managing AI prompts, allowing users to enhance their applications. In February 2025, PromptLayer raised USD 4. 8 million in seed funding from individual investors.

PromptLayer specializes in prompt management and engineering, providing a platform that enables users to visually edit, evaluate, and deploy prompts across various applications in a collaborative environment. The core offering includes a user-friendly interface that allows non-technical stakeholders to manage prompts without the need for coding. This accessibility empowers teams to iterate on AI features independently, aiming to enhance the efficiency of AI-driven applications. Key functionalities include prompt evaluation against usage history, A/B testing, and metrics comparison related to usage and latency, allowing users to continuously improve the effectiveness of their AI models.

The company's client base includes organizations in sectors such as customer service, education, and mental health, with notable customers like Gorgias and Speak utilizing PromptLayer to streamline their AI operations. The service is actively marketed and utilized in North America, Europe, and Asia, addressing the needs of a global audience looking for robust AI prompt management solutions. PromptLayer operates on a subscription-based model, allowing businesses to access its suite of prompt management tools through various pricing tiers tailored to meet differing organizational needs. Clients engage with the platform through annual or monthly subscriptions, which provide access to comprehensive prompt management capabilities, including the Prompt Registry and evaluation features.

This transactional structure fosters long-term relationships between PromptLayer and its clients, ensuring continuous service and support. The focus on providing a no-code solution facilitates a direct-to-business model where organizations can adopt the platform without heavy reliance on technical resources.