Libretto builds tools to monitor, test, and optimize LLMs, getting you to the best prompt, fast.
Libretto has raised $3.7M in total funding. The most recent round was Seed. The last funding was announced in April 2024.
Libretto's investors include XYZ Venture Capital, The General Partnership.
Libretto is headquartered in Brooklyn, United States.
Libretto builds tools to monitor, test, and optimize LLMs, getting you to the best prompt, fast.
Libretto is at the Seed stage.
Free to use in articles, research, and reference works. Stable URL — will not change. Data on this page last updated .
"Libretto — Funding & Investors." VCBacked, April 9, 2024, https://www.vcbacked.co/company/libretto. Accessed August 15, 2026.
VCBacked. (2024). Libretto — Funding & Investors. Retrieved August 15, 2026, from https://www.vcbacked.co/company/libretto
{{cite web |title=Libretto — Funding & Investors |url=https://www.vcbacked.co/company/libretto |website=VCBacked |access-date=August 15, 2026}}Profile data sourced and verified per the VCbacked methodology · Last funding round dated