Libretto is an NYC-based startup that provides tools for developers to monitor, test, and improve LLM prompts. Led by CEO Sasha Aickin and operating in stealth mode, the platform lets developers see how customers use prompts in production and uses production traffic and user feedback to build test sets. The product supports setting up evaluation strategies to automatically score prompt responses and enables iteration and experimentation across models. The company has monitored over 1,000,000 LLM calls in production. Libretto intends to use its newly raised funds to expand operations and accelerate development efforts.

Total raised

$4M

Funding rounds

1

Latest round

Seed

Latest activity

Apr 2024