PromptLayer offers a visual prompt-management platform centered on a “prompt registry” that functions like CMS and version control for prompts. The product includes testing, logs, A/B tests and analytics to evaluate prompt versions across multiple LLMs. It targets non-technical domain experts in fields such as healthcare, legal and education, enabling them to lead AI app development alongside engineers. PromptLayer commercialized its MVP (launched about two years ago) into a fully featured platform sold to third-party businesses. The startup reports over 10,000 free and paid users, paying customers including ParentLab and OpenAI-backed Speak, and 13x revenue growth this year. The team is eight-strong and plans to use new funding to add engineering hires, expand use-cases, grow usage and build a community around prompt engineering.

Total raised

$5M

Funding rounds

1

Latest round

Seed

Latest activity

Feb 2025